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Last change on this file since 236 was 235, checked in by umoeller, 23 years ago
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1
2	/*
3	*@@sourcefile winh.c:
4	* contains Presentation Manager helper functions that are
5	* independent of a single application, i.e. these can be
6	* used w/out the rest of the XWorkplace source in any PM
7	* program.
8	*
9	* Usage: All PM programs.
10	*
11	* Function prefixes (new with V0.81):
12	* -- winh* Win (Presentation Manager) helper functions
13	*
14	* Note: Version numbering in this file relates to XWorkplace version
15	* numbering.
16	*
17	*@@header "helpers\winh.h"
18	*/
19
20	/*
21	* Copyright (C) 1997-2002 Ulrich Mller.
22	* This file is part of the "XWorkplace helpers" source package.
23	* This is free software; you can redistribute it and/or modify
24	* it under the terms of the GNU General Public License as published
25	* by the Free Software Foundation, in version 2 as it comes in the
26	* "COPYING" file of the XWorkplace main distribution.
27	* This program is distributed in the hope that it will be useful,
28	* but WITHOUT ANY WARRANTY; without even the implied warranty of
29	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
30	* GNU General Public License for more details.
31	*/
32
33	#define OS2EMX_PLAIN_CHAR
34	// this is needed for "os2emx.h"; if this is defined,
35	// emx will define PSZ as _signed_ char, otherwise
36	// as unsigned char
37
38	#define INCL_DOSPROCESS
39	#define INCL_DOSMODULEMGR
40	#define INCL_DOSSEMAPHORES
41	#define INCL_DOSDEVICES
42	#define INCL_DOSDEVIOCTL
43	#define INCL_DOSSESMGR
44	#define INCL_DOSERRORS
45
46	#define INCL_WINWINDOWMGR
47	#define INCL_WINMESSAGEMGR
48	#define INCL_WINFRAMEMGR
49	#define INCL_WININPUT
50	#define INCL_WINDIALOGS
51	#define INCL_WINPOINTERS
52	#define INCL_WINRECTANGLES
53	#define INCL_WINSHELLDATA
54	#define INCL_WINTIMER
55	#define INCL_WINSYS
56	#define INCL_WINHELP
57	#define INCL_WINPROGRAMLIST
58	#define INCL_WINSWITCHLIST
59	#define INCL_WINBUTTONS
60	#define INCL_WINSTATICS
61	#define INCL_WINMENUS
62	#define INCL_WINENTRYFIELDS
63	#define INCL_WINSCROLLBARS
64	#define INCL_WINLISTBOXES
65	#define INCL_WINSTDSPIN
66	#define INCL_WINSTDSLIDER
67	#define INCL_WINCIRCULARSLIDER
68	#define INCL_WINSTDFILE
69	#define INCL_WINCLIPBOARD
70
71	#define INCL_SPL
72	#define INCL_SPLDOSPRINT
73	#define INCL_SPLERRORS
74
75	#define INCL_GPIBITMAPS
76	#define INCL_GPIPRIMITIVES
77	#include <os2.h>
78
79	#include <stdlib.h>
80	#include <string.h>
81	#include <stdio.h>
82	#include <stdarg.h>
83
84	#include "setup.h" // code generation and debugging options
85
86	#include "helpers\dosh.h"
87	#include "helpers\winh.h"
88	#include "helpers\prfh.h"
89	#include "helpers\gpih.h"
90	#include "helpers\standards.h"
91	#include "helpers\stringh.h"
92	#include "helpers\xstring.h" // extended string helpers
93
94	/*
95	*@@category: Helpers\PM helpers\Wrappers
96	*/
97
98	/* ******************************************************************
99	*
100	* Wrappers
101	*
102	********************************************************************/
103
104	#ifdef WINH_STANDARDWRAPPERS
105
106	/*
107	*@@ winhSendMsg:
108	* wrapper for WinSendMsg.
109	*
110	* If WINH_STANDARDWRAPPERS is #defined before
111	* including win.h, all WinSendMsg calls are
112	* redefined to use this wrapper instead. This
113	* reduces the amount of external fixups required
114	* for loading the module.
115	*
116	*@@added V0.9.12 (2001-05-18) [umoeller]
117	*/
118
119	MRESULT winhSendMsg(HWND hwnd, ULONG msg, MPARAM mp1, MPARAM mp2)
120	{
121	// put the call in brackets so the macro won't apply here
122	return ((WinSendMsg)(hwnd, msg, mp1, mp2));
123	}
124
125	/*
126	*@@ winhSendDlgItemMsg:
127	* wrapper for WinSendDlgItemMsg.
128	*
129	* If WINH_STANDARDWRAPPERS is #defined before
130	* including win.h, all WinSendMsg calls are
131	* redefined to use this wrapper instead. This
132	* reduces the amount of external fixups required
133	* for loading the module.
134	*
135	*@@added V0.9.13 (2001-06-27) [umoeller]
136	*/
137
138	MRESULT winhSendDlgItemMsg(HWND hwnd, ULONG id, ULONG msg, MPARAM mp1, MPARAM mp2)
139	{
140	return ((WinSendDlgItemMsg)(hwnd, id, msg, mp1, mp2));
141	}
142
143	/*
144	*@@ winhPostMsg:
145	* wrapper for WinPostMsg.
146	*
147	* If WINH_STANDARDWRAPPERS is #defined before
148	* including win.h, all WinSendMsg calls are
149	* redefined to use this wrapper instead. This
150	* reduces the amount of external fixups required
151	* for loading the module.
152	*
153	*@@added V0.9.12 (2001-05-18) [umoeller]
154	*/
155
156	BOOL winhPostMsg(HWND hwnd, ULONG msg, MPARAM mp1, MPARAM mp2)
157	{
158	// put the call in brackets so the macro won't apply here
159	return ((WinPostMsg)(hwnd, msg, mp1, mp2));
160	}
161
162	/*
163	*@@ winhWindowFromID:
164	*
165	*@@added V0.9.12 (2001-05-18) [umoeller]
166	*/
167
168	HWND winhWindowFromID(HWND hwnd, ULONG id)
169	{
170	// put the call in brackets so the macro won't apply here
171	return ((WinWindowFromID)(hwnd, id));
172	}
173
174	/*
175	*@@ winhQueryWindow:
176	*
177	*@@added V0.9.12 (2001-05-18) [umoeller]
178	*/
179
180	HWND winhQueryWindow(HWND hwnd, LONG lCode)
181	{
182	// put the call in brackets so the macro won't apply here
183	return ((WinQueryWindow)(hwnd, lCode));
184	}
185
186	/*
187	*@@ winhQueryWindowPtr:
188	*
189	*@@added V0.9.13 (2001-06-21) [umoeller]
190	*/
191
192	PVOID winhQueryWindowPtr(HWND hwnd, LONG index)
193	{
194	// put the call in brackets so the macro won't apply here
195	return ((WinQueryWindowPtr)(hwnd, index));
196	}
197
198	/*
199	*@@ winhSetWindowText2:
200	*
201	*@@added V0.9.13 (2001-06-21) [umoeller]
202	*/
203
204	BOOL winhSetWindowText2(HWND hwnd, const char *pcsz)
205	{
206	// put the call in brackets so the macro won't apply here
207	return (WinSetWindowText)(hwnd, (PSZ)pcsz);
208	}
209
210	/*
211	*@@ winhSetDlgItemText:
212	*
213	*@@added V0.9.13 (2001-06-21) [umoeller]
214	*/
215
216	BOOL winhSetDlgItemText(HWND hwnd, ULONG id, const char *pcsz)
217	{
218	// put the call in brackets so the macro won't apply here
219	return (WinSetDlgItemText)(hwnd, id, (PSZ)pcsz);
220	}
221
222	/*
223	*@@ winhRequestMutexSem:
224	*
225	*@@added V0.9.16 (2002-01-26) [umoeller]
226	*/
227
228	APIRET winhRequestMutexSem(HMTX hmtx, ULONG ulTimeout)
229	{
230	// put the call in brackets so the macro won't apply here
231	return (WinRequestMutexSem)(hmtx, ulTimeout);
232	}
233
234	#endif // WINH_STANDARDWRAPPERS
235
236	/*
237	*@@category: Helpers\PM helpers\Rectangle helpers
238	*/
239
240	/* ******************************************************************
241	*
242	* Rectangle helpers
243	*
244	********************************************************************/
245
246	/*
247	*@@ winhOffsetRect:
248	* like WinOffsetRect, but doesn't require
249	* an anchor block to be passed in. Why
250	* the original would need an anchor block
251	* for this awfully complicated task is
252	* a mystery to me anyway.
253	*
254	*@@added V0.9.9 (2001-03-13) [umoeller]
255	*/
256
257	VOID winhOffsetRect(PRECTL prcl,
258	LONG lx,
259	LONG ly)
260	{
261	prcl->xLeft += lx;
262	prcl->xRight += lx;
263	prcl->yBottom += ly;
264	prcl->yTop += ly;
265	}
266
267	/*
268	*@@category: Helpers\PM helpers\Generics
269	*/
270
271	/* ******************************************************************
272	*
273	* Global variables
274	*
275	********************************************************************/
276
277	extern LONG G_cxScreen = 0,
278	G_cyScreen = 0,
279	G_cxIcon = 0,
280	G_cyIcon = 0,
281	G_lcol3DDark = 0, // lo-3D color
282	G_lcol3DLight = 0; // hi-3D color
283
284	/* ******************************************************************
285	*
286	* Generics
287	*
288	********************************************************************/
289
290	/*
291	*@@ winhInitGlobals:
292	* initializes a few global variables that are usually
293	* used all the time in many applications and also
294	* internally by many helper routines. You must call
295	* this at the start of your application if you want
296	* to use these.
297	*
298	*@@added V1.0.1 (2002-11-30) [umoeller]
299	*/
300
301	VOID winhInitGlobals(VOID)
302	{
303	G_cxScreen = WinQuerySysValue(HWND_DESKTOP, SV_CXSCREEN);
304	G_cyScreen = WinQuerySysValue(HWND_DESKTOP, SV_CYSCREEN);
305	G_cxIcon = WinQuerySysValue(HWND_DESKTOP, SV_CXICON);
306	G_cyIcon = WinQuerySysValue(HWND_DESKTOP, SV_CYICON);
307	G_lcol3DDark = WinQuerySysColor(HWND_DESKTOP, SYSCLR_BUTTONDARK, 0);
308	G_lcol3DLight = WinQuerySysColor(HWND_DESKTOP, SYSCLR_BUTTONLIGHT, 0);
309	}
310
311	/*
312	*@@ winhQueryWindowStyle:
313	*
314	*@@added V0.9.13 (2001-07-02) [umoeller]
315	*/
316
317	ULONG winhQueryWindowStyle(HWND hwnd)
318	{
319	return WinQueryWindowULong(hwnd, QWL_STYLE);
320	}
321
322	/*
323	*@@ winhEnableDlgItem:
324	*
325	*@@added V0.9.12 (2001-05-18) [umoeller]
326	*/
327
328	BOOL winhEnableDlgItem(HWND hwndDlg,
329	SHORT id,
330	BOOL fEnable)
331	{
332	return WinEnableWindow(WinWindowFromID(hwndDlg, id), fEnable);
333	}
334
335	/*
336	*@@ winhIsDlgItemEnabled:
337	*
338	*@@added V0.9.12 (2001-05-18) [umoeller]
339	*/
340
341	BOOL winhIsDlgItemEnabled(HWND hwndDlg,
342	SHORT id)
343	{
344	return WinIsWindowEnabled(WinWindowFromID(hwndDlg, id));
345	}
346
347	/*
348	*@@ winhDestroyWindow:
349	* wrapper around WinDestroyWindow that also sets
350	* *phwnd to NULLHANDLE to avoid loose window
351	* handles lying around.
352	*
353	*@@added V1.0.1 (2002-12-11) [umoeller]
354	*/
355
356	BOOL winhDestroyWindow(HWND *phwnd)
357	{
358	if ( (*phwnd)
359	&& (WinDestroyWindow(*phwnd))
360	)
361	{
362	*phwnd = NULLHANDLE;
363
364	return TRUE;
365	}
366
367	return FALSE;
368	}
369
370	/*
371	*@@category: Helpers\PM helpers\Menu helpers
372	*/
373
374	/* ******************************************************************
375	*
376	* Menu helpers
377	*
378	********************************************************************/
379
380	/*
381	*@@ winhQueryMenuItem:
382	* wrapper around MM_QUERYITEM.
383	*
384	*@@added V0.9.12 (2001-05-18) [umoeller]
385	*/
386
387	BOOL winhQueryMenuItem(HWND hwndMenu,
388	USHORT usItemID,
389	BOOL fSearchSubmenus,
390	PMENUITEM pmi) // out: MENUITEM data
391	{
392	return (BOOL)WinSendMsg(hwndMenu,
393	MM_QUERYITEM,
394	MPFROM2SHORT(usItemID, fSearchSubmenus),
395	(MPARAM)pmi);
396	}
397
398	/*
399	*@@ winhQuerySubmenu:
400	* tests whether sID specifies a submenu in
401	* hMenu and returns the submenu window handle
402	* if so.
403	*
404	*@@added V0.9.20 (2002-08-10) [umoeller]
405	*/
406
407	HWND winhQuerySubmenu(HWND hMenu,
408	SHORT sID)
409	{
410	MENUITEM mi = {0};
411	if ( (WinSendMsg(hMenu,
412	MM_QUERYITEM,
413	MPFROM2SHORT(sID,
414	FALSE),
415	(MPARAM)&mi))
416	&& (mi.afStyle & MIS_SUBMENU)
417	)
418	return mi.hwndSubMenu;
419
420	return NULLHANDLE;
421	}
422
423	/*
424	*@@ winhInsertMenuItem:
425	* this inserts one one menu item into a given menu.
426	*
427	* Returns the return value of the MM_INSERTITEM msg:
428	* -- MIT_MEMERROR: space allocation for menu item failed
429	* -- MIT_ERROR: other error
430	* -- other: zero-based index of new item in menu.
431	*/
432
433	SHORT winhInsertMenuItem(HWND hwndMenu, // in: menu to insert item into
434	SHORT iPosition, // in: zero-based index of where to
435	// insert or MIT_END
436	SHORT sItemId, // in: ID of new menu item
437	const char *pcszItemTitle, // in: title of new menu item
438	SHORT afStyle,
439	// in: MIS_* style flags.
440	// Valid menu item styles are:
441	// -- MIS_SUBMENU
442	// -- MIS_SEPARATOR
443	// -- MIS_BITMAP: the display object is a bit map.
444	// -- MIS_TEXT: the display object is a text string.
445	// -- MIS_BUTTONSEPARATOR:
446	// The item is a menu button. Any menu can have zero,
447	// one, or two items of this type. These are the last
448	// items in a menu and are automatically displayed after
449	// a separator bar. The user cannot move the cursor to
450	// these items, but can select them with the pointing
451	// device or with the appropriate key.
452	// -- MIS_BREAK: the item begins a new row or column.
453	// -- MIS_BREAKSEPARATOR:
454	// Same as MIS_BREAK, except that it draws a separator
455	// between rows or columns of a pull-down menu.
456	// This style can only be used within a submenu.
457	// -- MIS_SYSCOMMAND:
458	// menu posts a WM_SYSCOMMAND message rather than a
459	// WM_COMMAND message.
460	// -- MIS_OWNERDRAW:
461	// WM_DRAWITEM and WM_MEASUREITEM notification messages
462	// are sent to the owner to draw the item or determine its size.
463	// -- MIS_HELP:
464	// menu posts a WM_HELP message rather than a
465	// WM_COMMAND message.
466	// -- MIS_STATIC
467	// This type of item exists for information purposes only.
468	// It cannot be selected with the pointing device or
469	// keyboard.
470	SHORT afAttr)
471	// in: MIA_* attribute flags
472	// Valid menu item attributes (afAttr) are:
473	// -- MIA_HILITED: if and only if, the item is selected.
474	// -- MIA_CHECKED: a check mark appears next to the item (submenu only).
475	// -- MIA_DISABLED: item is disabled and cannot be selected.
476	// The item is drawn in a disabled state (gray).
477	// -- MIA_FRAMED: a frame is drawn around the item (top-level menu only).
478	// -- MIA_NODISMISS:
479	// if the item is selected, the submenu remains down. A menu
480	// with this attribute is not hidden until the application
481	// or user explicitly does so, for example by selecting either
482	// another menu on the action bar or by pressing the escape key.
483	{
484	MENUITEM mi;
485
486	mi.iPosition = iPosition;
487	mi.afStyle = afStyle;
488	mi.afAttribute = afAttr;
489	mi.id = sItemId;
490	mi.hwndSubMenu = 0;
491	mi.hItem = 0;
492
493	return SHORT1FROMMR(WinSendMsg(hwndMenu,
494	MM_INSERTITEM,
495	(MPARAM)&mi,
496	(MPARAM)pcszItemTitle));
497	}
498
499	/*
500	*@@ winhInsertSubmenu:
501	* this inserts a submenu into a given menu and, if
502	* sItemId != 0, inserts one item into this new submenu also.
503	*
504	* See winhInsertMenuItem for valid menu item styles and
505	* attributes.
506	*
507	* Returns the HWND of the new submenu.
508	*/
509
510	HWND winhInsertSubmenu(HWND hwndMenu, // in: menu to add submenu to
511	ULONG iPosition, // in: index where to add submenu or MIT_END
512	SHORT sMenuId, // in: menu ID of new submenu
513	const char *pcszSubmenuTitle, // in: title of new submenu
514	USHORT afMenuStyle, // in: MIS* style flags for submenu;
515	// MIS_SUBMENU will always be added
516	SHORT sItemId, // in: ID of first item to add to submenu;
517	// if 0, no first item is inserted
518	const char *pcszItemTitle, // in: title of this item
519	// (if sItemID != 0)
520	USHORT afItemStyle, // in: style flags for this item, e.g. MIS_TEXT
521	// (this is ignored if sItemID == 0)
522	USHORT afAttribute) // in: attributes for this item, e.g. MIA_DISABLED
523	// (this is ignored if sItemID == 0)
524	{
525	MENUITEM mi;
526	SHORT src = MIT_ERROR;
527	HWND hwndNewMenu;
528
529	// create new, empty menu
530	hwndNewMenu = WinCreateMenu(hwndMenu,
531	NULL); // no menu template
532	if (hwndNewMenu)
533	{
534	// add "submenu item" to this empty menu;
535	// for some reason, PM always needs submenus
536	// to be a menu item
537	mi.iPosition = iPosition;
538	mi.afStyle = afMenuStyle \| MIS_SUBMENU;
539	mi.afAttribute = 0;
540	mi.id = sMenuId;
541	mi.hwndSubMenu = hwndNewMenu;
542	mi.hItem = 0;
543	src = SHORT1FROMMR(WinSendMsg(hwndMenu, MM_INSERTITEM, (MPARAM)&mi, (MPARAM)pcszSubmenuTitle));
544	if ( (src != MIT_MEMERROR)
545	&& (src != MIT_ERROR)
546	)
547	{
548	// set the new menu's ID to the same as the
549	// submenu item
550	WinSetWindowUShort(hwndNewMenu, QWS_ID, sMenuId);
551
552	if (sItemId)
553	{
554	// item id given: insert first menu item also
555	mi.iPosition = 0;
556	mi.afStyle = afItemStyle;
557	mi.afAttribute = afAttribute;
558	mi.id = sItemId;
559	mi.hwndSubMenu = 0;
560	mi.hItem = 0;
561	WinSendMsg(hwndNewMenu,
562	MM_INSERTITEM,
563	(MPARAM)&mi,
564	(MPARAM)pcszItemTitle);
565	}
566	}
567	}
568	return hwndNewMenu;
569	}
570
571	/*
572	*@@ winhSetMenuCondCascade:
573	* sets the "conditional cascade" style
574	* on the specified submenu.
575	*
576	* This style must always be enabled manually
577	* because the resource compiler won't handle it.
578	*
579	* Note: Pass in the _submenu_ window handle,
580	* not the one of the parent. With lDefaultItem,
581	* specify the item ID in the submenu which is
582	* to be checked as the default item.
583	*
584	*@@added V0.9.12 (2001-05-22) [umoeller]
585	*@@changed V0.9.20 (2002-08-10) [umoeller]: now supporting calling this more than once
586	*/
587
588	BOOL winhSetMenuCondCascade(HWND hwndMenu, // in: submenu handle
589	LONG lDefaultItem) // in: item ID of new default item
590	{
591	BOOL brc;
592	ULONG ulStyle = WinQueryWindowULong(hwndMenu, QWL_STYLE);
593	LONG lOldDefault = -1;
594
595	if (ulStyle & MS_CONDITIONALCASCADE)
596	{
597	// menu is already conditional cascade:
598	lOldDefault = (LONG)WinSendMsg(hwndMenu,
599	MM_QUERYDEFAULTITEMID,
600	0,
601	0);
602	}
603	else
604	{
605	ulStyle \|= MS_CONDITIONALCASCADE;
606	WinSetWindowULong(hwndMenu, QWL_STYLE, ulStyle);
607	}
608
609	// make the first item in the subfolder
610	// the default of cascading submenu
611	brc = (BOOL)WinSendMsg(hwndMenu,
612	MM_SETDEFAULTITEMID,
613	(MPARAM)lDefaultItem,
614	0);
615
616	if ( (lOldDefault != -1)
617	&& (lOldDefault != lDefaultItem)
618	)
619	{
620	// unset the "checked" attribute of the old one
621	// or we'll have two in the menu
622	WinSendMsg(hwndMenu,
623	MM_SETITEMATTR,
624	MPFROM2SHORT(lOldDefault,
625	FALSE),
626	MPFROM2SHORT(MIA_CHECKED, 0));
627	}
628
629	return brc;
630	}
631
632	/*
633	*@@ winhRemoveMenuItems:
634	* removes multiple menu items at once, as
635	* specified in the given array of menu item
636	* IDs.
637	*
638	*@@added V1.0.0 (2002-08-12) [umoeller]
639	*/
640
641	BOOL XWPENTRY winhRemoveMenuItems(HWND hwndMenu, // in: menu to remove from
642	const SHORT *asItemIDs, // in: array of menu item IDs
643	ULONG cItemIDs) // in: array item count
644	{
645	ULONG ul;
646	for (ul = 0;
647	ul < cItemIDs;
648	++ul)
649	{
650	SHORT s = asItemIDs[ul];
651	winhRemoveMenuItem(hwndMenu,
652	s);
653	}
654
655	return TRUE;
656	}
657
658	/*
659	*@@ winhInsertMenuSeparator:
660	* this inserts a separator into a given menu at
661	* the given position (which may be MIT_END);
662	* returns the position at which the item was
663	* inserted.
664	*/
665
666	SHORT winhInsertMenuSeparator(HWND hMenu, // in: menu to add separator to
667	SHORT iPosition, // in: index where to add separator or MIT_END
668	SHORT sId) // in: separator menu ID (doesn't really matter)
669	{
670	MENUITEM mi;
671	mi.iPosition = iPosition;
672	mi.afStyle = MIS_SEPARATOR; // append separator
673	mi.afAttribute = 0;
674	mi.id = sId;
675	mi.hwndSubMenu = 0;
676	mi.hItem = 0;
677
678	return SHORT1FROMMR(WinSendMsg(hMenu,
679	MM_INSERTITEM,
680	(MPARAM)&mi,
681	(MPARAM)""));
682	}
683
684	/*
685	*@@ winhCopyMenuItem2:
686	* copies a menu item from hmenuSource to hmenuTarget.
687	*
688	* This creates a full duplicate. If usID specifies
689	* a submenu, the entire submenu is copied as well
690	* (this will then recurse).
691	*
692	* fl can be any combination of:
693	*
694	* -- COPYFL_STRIPTABS: strip off \t and everything
695	* that follows, if present.
696	*
697	* NOTE: Copying submenus will work only if each item
698	* in the submenu has a unique menu ID. This is due
699	* to the dumb implementation of menus in PM where
700	* it is impossible to query menu items without
701	* knowing their ID.
702	*
703	*@@added V0.9.9 (2001-03-09) [umoeller]
704	*@@changed V0.9.20 (2002-08-10) [umoeller]: renamed, added fl
705	*/
706
707	BOOL winhCopyMenuItem2(HWND hmenuTarget,
708	HWND hmenuSource,
709	USHORT usID,
710	SHORT sTargetPosition, // in: position to insert at or MIT_END
711	ULONG fl) // in: COPYFL_* flags
712	{
713	BOOL brc = FALSE;
714	MENUITEM mi = {0};
715	if (WinSendMsg(hmenuSource,
716	MM_QUERYITEM,
717	MPFROM2SHORT(usID,
718	FALSE),
719	(MPARAM)&mi))
720	{
721	// found in source:
722	// is it a separator?
723	if (mi.afStyle & MIS_SEPARATOR)
724	winhInsertMenuSeparator(hmenuTarget,
725	sTargetPosition,
726	usID);
727	else
728	{
729	// no separator:
730	// get item text
731	PSZ pszSource;
732	if (pszSource = winhQueryMenuItemText(hmenuSource,
733	usID))
734	{
735	PSZ p;
736	// remove the hotkey description
737	// V0.9.20 (2002-08-10) [umoeller]
738	if ( (fl & COPYFL_STRIPTABS)
739	&& (p = strchr(pszSource, '\t'))
740	)
741	*p = '\0';
742
743	if ( (mi.afStyle & MIS_SUBMENU)
744	&& (mi.hwndSubMenu)
745	)
746	{
747	// this is the top of a submenu:
748	HWND hwndSubMenu;
749	if (hwndSubMenu = winhInsertSubmenu(hmenuTarget,
750	sTargetPosition,
751	mi.id,
752	pszSource,
753	mi.afStyle,
754	0,
755	NULL,
756	0,
757	0))
758	{
759	// now copy all the items in the submenu
760	SHORT cMenuItems = SHORT1FROMMR(WinSendMsg(mi.hwndSubMenu,
761	MM_QUERYITEMCOUNT,
762	0,
763	0));
764	// loop through all entries in the original submenu
765	ULONG i;
766	for (i = 0;
767	i < cMenuItems;
768	i++)
769	{
770	SHORT id = SHORT1FROMMR(WinSendMsg(mi.hwndSubMenu,
771	MM_ITEMIDFROMPOSITION,
772	MPFROMSHORT(i),
773	0));
774	// recurse
775	winhCopyMenuItem2(hwndSubMenu,
776	mi.hwndSubMenu,
777	id,
778	MIT_END,
779	fl);
780	}
781
782	// now check... was the original submenu
783	// "conditional cascade"?
784	if (WinQueryWindowULong(mi.hwndSubMenu,
785	QWL_STYLE)
786	& MS_CONDITIONALCASCADE)
787	// yes:
788	{
789	// get the original default item
790	SHORT sDefID = SHORT1FROMMR(WinSendMsg(mi.hwndSubMenu,
791	MM_QUERYDEFAULTITEMID,
792	0,
793	0));
794	// set "conditional cascade style" on target too
795	winhSetMenuCondCascade(hwndSubMenu, sDefID);
796	}
797	} // end if (hwndSubmenu)
798	} // end if ( (mi.afStyle & MIS_SUBMENU)
799	else
800	{
801	// no submenu:
802	// just copy that item
803	SHORT s;
804	mi.iPosition = sTargetPosition;
805	s = SHORT1FROMMR(WinSendMsg(hmenuTarget,
806	MM_INSERTITEM,
807	MPFROMP(&mi),
808	MPFROMP(pszSource)));
809	if ( (s != MIT_MEMERROR)
810	&& (s != MIT_ERROR)
811	)
812	brc = TRUE;
813	}
814
815	free(pszSource);
816
817	} // end if (pszSource)
818	} // end else if (mi.afStyle & MIS_SEPARATOR)
819	} // end if (WinSendMsg(hmenuSource, MM_QUERYITEM,...
820
821	return brc;
822	}
823
824	/*
825	*@@ winhCopyMenuItem:
826	* wrapper for winhCopyMenuItem2 because it was
827	* exported.
828	*
829	*@@added V0.9.20 (2002-08-10) [umoeller]
830	*/
831
832	BOOL winhCopyMenuItem(HWND hmenuTarget,
833	HWND hmenuSource,
834	USHORT usID,
835	SHORT sTargetPosition) // in: position to insert at or MIT_END
836	{
837	return winhCopyMenuItem2(hmenuTarget, hmenuSource, usID, sTargetPosition, 0);
838	}
839
840	/*
841	*@@ winhMergeIntoSubMenu:
842	* creates a new submenu in hmenuTarget with the
843	* specified title at the specified position
844	* and copies the entire contents of hmenuSource
845	* into that.
846	*
847	* Returns the window handle of the new submenu
848	* or NULLHANDLE on errors.
849	*
850	* NOTE: Copying submenus will work only if each item
851	* in the submenu has a unique menu ID. This is due
852	* to the dumb implementation of menus in PM where
853	* it is impossible to query menu items without
854	* knowing their ID.
855	*
856	*@@added V0.9.9 (2001-03-09) [umoeller]
857	*/
858
859	HWND winhMergeIntoSubMenu(HWND hmenuTarget, // in: menu where to create submenu
860	SHORT sTargetPosition, // in: position to insert at or MIT_END
861	const char *pcszTitle, // in: title of new submenu or NULL
862	SHORT sID, // in: ID of new submenu
863	HWND hmenuSource) // in: menu to merge
864	{
865	HWND hwndNewSubmenu;
866	if (hwndNewSubmenu = WinCreateMenu(hmenuTarget, NULL))
867	{
868	MENUITEM mi = {0};
869	SHORT src = 0;
870	// SHORT s = 0;
871	mi.iPosition = MIT_END;
872	mi.afStyle = MIS_TEXT \| MIS_SUBMENU;
873	mi.id = 2000;
874	mi.hwndSubMenu = hwndNewSubmenu;
875
876	WinSetWindowUShort(hwndNewSubmenu, QWS_ID, sID);
877
878	// insert new submenu into hmenuTarget
879	src = SHORT1FROMMR(WinSendMsg(hmenuTarget,
880	MM_INSERTITEM,
881	(MPARAM)&mi,
882	(MPARAM)pcszTitle));
883	if ( (src != MIT_MEMERROR)
884	&& (src != MIT_ERROR)
885	)
886	{
887	int i;
888	SHORT cMenuItems = SHORT1FROMMR(WinSendMsg(hmenuSource,
889	MM_QUERYITEMCOUNT,
890	0, 0));
891
892	// loop through all entries in the original menu
893	for (i = 0; i < cMenuItems; i++)
894	{
895	SHORT id = SHORT1FROMMR(WinSendMsg(hmenuSource,
896	MM_ITEMIDFROMPOSITION,
897	MPFROMSHORT(i),
898	0));
899	winhCopyMenuItem(hwndNewSubmenu,
900	hmenuSource,
901	id,
902	MIT_END);
903	}
904	}
905	else
906	{
907	// error:
908	WinDestroyWindow(hwndNewSubmenu);
909	hwndNewSubmenu = NULLHANDLE;
910	}
911	}
912
913	return hwndNewSubmenu;
914	}
915
916	/*
917	*@@ winhMergeIntoSubMenu:
918	* copies all items from hmenuSource into hmenuTarget,
919	* starting at the given position.
920	*
921	* Returns the no. of items that were copied.
922	*
923	* NOTE: Copying submenus will work only if each item
924	* in the submenu has a unique menu ID. This is due
925	* to the dumb implementation of menus in PM where
926	* it is impossible to query menu items without
927	* knowing their ID.
928	*
929	*@@added V0.9.20 (2002-08-10) [umoeller]
930	*/
931
932	ULONG winhMergeMenus(HWND hmenuTarget, // in: menu to copy items to
933	SHORT sTargetPosition, // in: position to insert at or MIT_END
934	HWND hmenuSource, // in: menu to merge
935	ULONG fl) // in: COPYFL_* flags for winhCopyMenuItem2
936	{
937	SHORT sTarget = MIT_END;
938
939	int i;
940	SHORT cMenuItems = SHORT1FROMMR(WinSendMsg(hmenuSource,
941	MM_QUERYITEMCOUNT,
942	0, 0));
943
944	// loop through all entries in the original menu
945	for (i = 0; i < cMenuItems; i++)
946	{
947	SHORT id = SHORT1FROMMR(WinSendMsg(hmenuSource,
948	MM_ITEMIDFROMPOSITION,
949	MPFROM2SHORT(i, 0),
950	0));
951	winhCopyMenuItem2(hmenuTarget,
952	hmenuSource,
953	id,
954	MIT_END,
955	fl);
956	}
957
958	return i;
959	}
960
961	/*
962	*@@ winhClearMenu:
963	* removes all menu items from the given (sub)menu.
964	* The menu itself is not destroyed, but is empty
965	* after calling this function.
966	*
967	*@@added V1.0.0 (2002-08-31) [umoeller]
968	*/
969
970	ULONG winhClearMenu(HWND hwndMenu)
971	{
972	ULONG cDeleted = 0;
973	SHORT sID;
974
975	// what we do is getting the menu item count
976	// and then delete the first item in the menu
977	// x times because there is no "delete menu item
978	// from position" message, and there might be
979	// duplicate IDs in the menu... this should
980	// work always
981
982	SHORT cMenuItems = SHORT1FROMMR(WinSendMsg(hwndMenu,
983	MM_QUERYITEMCOUNT,
984	0,
985	0));
986	while (cMenuItems-- > 0)
987	{
988	sID = SHORT1FROMMR(WinSendMsg(hwndMenu,
989	MM_ITEMIDFROMPOSITION,
990	MPFROMSHORT(0),
991	MPNULL));
992
993	WinSendMsg(hwndMenu,
994	MM_DELETEITEM,
995	MPFROM2SHORT(sID, FALSE),
996	0);
997
998	++cDeleted;
999	}
1000
1001	return cDeleted;
1002	}
1003
1004	/*
1005	*@@ winhQueryMenuItemText:
1006	* this returns a menu item text as a PSZ
1007	* to a newly allocated buffer or NULL if
1008	* not found.
1009	*
1010	* Returns NULL on error. Use free()
1011	* to free the return value.
1012	*
1013	* This uses MM_QUERYITEMTEXT internally.
1014	* PMREF doesn't say anything about this,
1015	* but from my testing this always recurses
1016	* into submenus.
1017	*
1018	* Use the WinSetMenuItemText macro to
1019	* set the menu item text.
1020	*/
1021
1022	PSZ winhQueryMenuItemText(HWND hwndMenu,
1023	USHORT usItemID) // in: menu item ID (not index)
1024	{
1025	PSZ prc = NULL;
1026
1027	SHORT sLength;
1028	if (sLength = SHORT1FROMMR(WinSendMsg(hwndMenu,
1029	MM_QUERYITEMTEXTLENGTH,
1030	(MPARAM)(ULONG)usItemID,
1031	(MPARAM)NULL)))
1032	{
1033	prc = (PSZ)malloc(sLength + 1);
1034	WinSendMsg(hwndMenu,
1035	MM_QUERYITEMTEXT,
1036	MPFROM2SHORT(usItemID, sLength + 1),
1037	(MPARAM)prc);
1038	}
1039
1040	return prc;
1041	}
1042
1043	/*
1044	*@@ winhAppend2MenuItemText:
1045	*
1046	*@@added V0.9.2 (2000-03-08) [umoeller]
1047	*/
1048
1049	BOOL winhAppend2MenuItemText(HWND hwndMenu,
1050	USHORT usItemID, // in: menu item ID (not index)
1051	const char *pcszAppend, // in: text to append
1052	BOOL fTab) // in: if TRUE, add \t before pcszAppend
1053	{
1054	BOOL brc = FALSE;
1055	CHAR szItemText[400];
1056	if (WinSendMsg(hwndMenu,
1057	MM_QUERYITEMTEXT,
1058	MPFROM2SHORT(usItemID,
1059	sizeof(szItemText)),
1060	(MPARAM)szItemText))
1061	{
1062	// text copied:
1063	if (fTab)
1064	{
1065	if (strchr(szItemText, '\t'))
1066	// we already have a tab:
1067	strcat(szItemText, " ");
1068	else
1069	strcat(szItemText, "\t");
1070	}
1071	strcat(szItemText, pcszAppend);
1072
1073	brc = (BOOL)WinSendMsg(hwndMenu,
1074	MM_SETITEMTEXT,
1075	MPFROMSHORT(usItemID),
1076	(MPARAM)szItemText);
1077	}
1078
1079	return brc;
1080	}
1081
1082	/*
1083	*@@ winhMenuRemoveEllipse:
1084	* removes a "..." substring from a menu item
1085	* title, if found. This is useful if confirmations
1086	* have been turned off for a certain menu item, which
1087	* should be reflected in the menu.
1088	*/
1089
1090	VOID winhMenuRemoveEllipse(HWND hwndMenu,
1091	USHORT usItemId) // in: item to remove "..." from
1092	{
1093	CHAR szBuf[255];
1094	CHAR *p;
1095	WinSendMsg(hwndMenu,
1096	MM_QUERYITEMTEXT,
1097	MPFROM2SHORT(usItemId, sizeof(szBuf)-1),
1098	(MPARAM)&szBuf);
1099	if ((p = strstr(szBuf, "...")))
1100	strcpy(p, p+3);
1101	WinSendMsg(hwndMenu,
1102	MM_SETITEMTEXT,
1103	MPFROMSHORT(usItemId),
1104	(MPARAM)&szBuf);
1105	}
1106
1107	/*
1108	*@@ winhQueryItemUnderMouse:
1109	* this queries the menu item which corresponds
1110	* to the given mouse coordinates.
1111	* Returns the ID of the menu item and stores its
1112	* rectangle in *prtlItem; returns (-1) upon errors.
1113	*/
1114
1115	SHORT winhQueryItemUnderMouse(HWND hwndMenu, // in: menu handle
1116	POINTL *pptlMouse, // in: mouse coordinates
1117	RECTL *prtlItem) // out: rectangle of menu item
1118	{
1119	SHORT s, sItemId, sItemCount;
1120	HAB habDesktop = WinQueryAnchorBlock(HWND_DESKTOP);
1121
1122	sItemCount = SHORT1FROMMR(WinSendMsg(hwndMenu, MM_QUERYITEMCOUNT, MPNULL, MPNULL));
1123
1124	for (s = 0;
1125	s <= sItemCount;
1126	s++)
1127	{
1128	sItemId = SHORT1FROMMR(WinSendMsg(hwndMenu,
1129	MM_ITEMIDFROMPOSITION,
1130	(MPARAM)(ULONG)s, MPNULL));
1131	WinSendMsg(hwndMenu,
1132	MM_QUERYITEMRECT,
1133	MPFROM2SHORT(sItemId, FALSE),
1134	(MPARAM)prtlItem);
1135	if (WinPtInRect(habDesktop, prtlItem, pptlMouse))
1136	return sItemId;
1137	}
1138	/* sItemId = (SHORT)WinSendMsg(hwndMenu, MM_ITEMIDFROMPOSITION, (MPARAM)(sItemCount-1), MPNULL);
1139	return (sItemId); */
1140
1141	return -1; // error: no valid menu item
1142	}
1143
1144	/*
1145	*@@category: Helpers\PM helpers\Slider helpers
1146	*/
1147
1148	/* ******************************************************************
1149	*
1150	* Slider helpers
1151	*
1152	********************************************************************/
1153
1154	/*
1155	*@@ winhReplaceWithLinearSlider:
1156	* this destroys the control with the ID ulID in hwndDlg
1157	* and creates a linear slider at the same position with the
1158	* same ID (effectively replacing it).
1159	*
1160	* This is needed because the IBM dialog editor (DLGEDIT.EXE)
1161	* keeps crashing when creating sliders. So the way to do
1162	* this easily is to create some other control with DLGEDIT
1163	* where the slider should be later and call this function
1164	* on that control when the dialog is initialized.
1165	*
1166	* You need to specify _one_ of the following with ulSliderStyle:
1167	* -- SLS_HORIZONTAL: horizontal slider (default)
1168	* -- SLS_VERTICAL: vertical slider
1169	*
1170	* plus _one_ additional common slider style for positioning:
1171	* -- for horizontal sliders: SLS_BOTTOM, SLS_CENTER, or SLS_TOP
1172	* -- for vertical sliders: SLS_LEFT, SLS_CENTER, or SLS_RIGHT
1173	*
1174	* Additional common slider styles are:
1175	* -- SLS_PRIMARYSCALE1: determines the location of the scale
1176	* on the slider shaft by using increment
1177	* and spacing specified for scale 1 as
1178	* the incremental value for positioning
1179	* the slider arm. Scale 1 is displayed
1180	* above the slider shaft of a horizontal
1181	* slider and to the right of the slider
1182	* shaft of a vertical slider. This is
1183	* the default for a slider.
1184	* -- SLS_PRIMARYSCALE2: not supported by this function
1185	* -- SLS_READONLY: creates a read-only slider, which
1186	* presents information to the user but
1187	* allows no interaction with the user.
1188	* -- SLS_RIBBONSTRIP: fills, as the slider arm moves, the
1189	* slider shaft between the home position
1190	* and the slider arm with a color value
1191	* different from slider shaft color,
1192	* similar to mercury in a thermometer.
1193	* -- SLS_OWNERDRAW: notifies the application whenever the
1194	* slider shaft, the ribbon strip, the
1195	* slider arm, and the slider background
1196	* are to be drawn.
1197	* -- SLS_SNAPTOINCREMENT: causes the slider arm, when positioned
1198	* between two values, to be positioned
1199	* to the nearest value and redrawn at
1200	* that position.
1201	*
1202	* Additionally, for horizontal sliders:
1203	* -- SLS_BUTTONSLEFT: specifies that the optional slider
1204	* buttons are to be used and places them
1205	* to the left of the slider shaft. The
1206	* buttons move the slider arm by one
1207	* position, left or right, in the
1208	* direction selected.
1209	* -- SLS_BUTTONSRIGHT: specifies that the optional slider
1210	* buttons are to be used and places them
1211	* to the right of the slider shaft. The
1212	* buttons move the slider arm by one
1213	* position, left or right, in the
1214	* direction selected.
1215	* -- SLS_HOMELEFT: specifies the slider arm's home
1216	* position. The left edge is used as the
1217	* base value for incrementing (default).
1218	* -- SLS_HOMERIGHT: specifies the slider arm's home
1219	* position. The right edge is used as
1220	* the base value for incrementing.
1221	*
1222	* Instead, for vertical sliders:
1223	* -- SLS_BUTTONSBOTTOM: specifies that the optional slider
1224	* buttons are to be used and places them
1225	* at the bottom of the slider shaft. The
1226	* buttons move the slider arm by one
1227	* position, up or down, in the direction
1228	* selected.
1229	* -- SLS_BUTTONSTOP: specifies that the optional slider
1230	* buttons are to be used and places them
1231	* at the top of the slider shaft. The
1232	* buttons move the slider arm by one
1233	* position, up or down, in the direction
1234	* selected.
1235	* -- SLS_HOMEBOTTOM: specifies the slider arm's home
1236	* position. The bottom of the slider is
1237	* used as the base value for
1238	* incrementing.
1239	* -- SLS_HOMETOP: specifies the slider arm's home
1240	* position. The top of the slider is
1241	* used as the base value for
1242	* incrementing.
1243	*
1244	* Notes: This function automatically adds WS_PARENTCLIP,
1245	* WS_TABSTOP, and WS_SYNCPAINT to the specified styles.
1246	* For the WS_TABSTOP style, hwndInsertAfter is important.
1247	* If you specify HWND_TOP, your window will be the first
1248	* in the tab stop list.
1249	*
1250	* It also shows the slider after having done all the
1251	* processing in here by calling WinShowWindow.
1252	*
1253	* Also, we only provide support for scale 1 here, so
1254	* do not specify SLS_PRIMARYSCALE2 with ulSliderStyle,
1255	* and we have the slider calculate all the spacings.
1256	*
1257	* This returns the HWND of the slider or NULLHANDLE upon
1258	* errors.
1259	*
1260	*@@added V0.9.0 [umoeller]
1261	*/
1262
1263	HWND winhReplaceWithLinearSlider(HWND hwndParent, // in: parent of old control and slider
1264	HWND hwndOwner, // in: owner of old control and slider
1265	HWND hwndInsertAfter, // in: the control after which the slider should
1266	// come up, or HWND_TOP, or HWND_BOTTOM
1267	ULONG ulID, // in: ID of old control and slider
1268	ULONG ulSliderStyle, // in: SLS_* styles
1269	ULONG ulTickCount) // in: number of ticks (scale 1)
1270	{
1271	HWND hwndSlider = NULLHANDLE;
1272	HWND hwndKill = WinWindowFromID(hwndParent, ulID);
1273	if (hwndKill)
1274	{
1275	SWP swpControl;
1276	if (WinQueryWindowPos(hwndKill, &swpControl))
1277	{
1278	SLDCDATA slcd;
1279
1280	// destroy the old control
1281	WinDestroyWindow(hwndKill);
1282
1283	// initialize slider control data
1284	slcd.cbSize = sizeof(SLDCDATA);
1285	slcd.usScale1Increments = ulTickCount;
1286	slcd.usScale1Spacing = 0; // have slider calculate it
1287	slcd.usScale2Increments = 0;
1288	slcd.usScale2Spacing = 0;
1289
1290	// create a slider with the same ID at the same
1291	// position
1292	hwndSlider = WinCreateWindow(hwndParent,
1293	WC_SLIDER,
1294	NULL, // no window text
1295	ulSliderStyle
1296	\| WS_PARENTCLIP
1297	\| WS_SYNCPAINT
1298	\| WS_TABSTOP,
1299	swpControl.x,
1300	swpControl.y,
1301	swpControl.cx,
1302	swpControl.cy,
1303	hwndOwner,
1304	hwndInsertAfter,
1305	ulID, // same ID as destroyed control
1306	&slcd, // slider control data
1307	NULL); // presparams
1308
1309	WinSendMsg(hwndSlider,
1310	SLM_SETTICKSIZE,
1311	MPFROM2SHORT(SMA_SETALLTICKS,
1312	6), // 15 pixels high
1313	NULL);
1314
1315	WinShowWindow(hwndSlider, TRUE);
1316	}
1317	}
1318
1319	return hwndSlider;
1320	}
1321
1322	/*
1323	*@@ winhSetSliderTicks:
1324	* this adds ticks to the given linear slider,
1325	* which are ulPixels pixels high. A useful
1326	* value for this is 4.
1327	*
1328	* This queries the slider for the primary
1329	* scale values. Only the primary scale is
1330	* supported.
1331	*
1332	* This function goes sets the ticks twice,
1333	* once with mpEveryOther1 and ulPixels1,
1334	* and then a second time with mpEveryOther2
1335	* and ulPixels2. This allows you to quickly
1336	* give, say, every tenth item a taller tick.
1337	*
1338	* For every set, if mpEveryOther is 0, this sets
1339	* all ticks on the primary slider scale.
1340	*
1341	* If mpEveryOther is != 0, SHORT1FROMMP
1342	* specifies the first tick to set, and
1343	* SHORT2FROMMP specifies every other tick
1344	* to set from there. For example:
1345	*
1346	+ MPFROM2SHORT(9, 10)
1347	*
1348	* would set tick 9, 19, 29, and so forth.
1349	*
1350	* If both mpEveryOther and ulPixels are -1,
1351	* that set is skipped.
1352	*
1353	* Example: Considering a slider with a
1354	* primary scale from 0 to 30, using
1355	*
1356	+ winhSetSliderTicks(hwndSlider,
1357	+ 0, // every tick
1358	+ 3, // to three pixels
1359	+ MPFROM2SHORT(9, 10) // then every tenth
1360	+ 6); // to six pixels.
1361	*
1362	* Returns FALSE upon errors.
1363	*
1364	*@@added V0.9.1 (99-12-04) [umoeller]
1365	*@@changed V0.9.7 (2001-01-18) [umoeller]: added second set
1366	*/
1367
1368	BOOL winhSetSliderTicks(HWND hwndSlider, // in: linear slider
1369	MPARAM mpEveryOther1, // in: set 1
1370	ULONG ulPixels1,
1371	MPARAM mpEveryOther2, // in: set 2
1372	ULONG ulPixels2)
1373	{
1374	BOOL brc = FALSE;
1375
1376	ULONG ulSet;
1377	MPARAM mpEveryOther = mpEveryOther1;
1378	ULONG ulPixels = ulPixels1;
1379
1380	// do this twice
1381	for (ulSet = 0;
1382	ulSet < 2;
1383	ulSet++)
1384	{
1385	if (mpEveryOther == 0)
1386	{
1387	// set all ticks:
1388	brc = (BOOL)WinSendMsg(hwndSlider,
1389	SLM_SETTICKSIZE,
1390	MPFROM2SHORT(SMA_SETALLTICKS,
1391	ulPixels),
1392	NULL);
1393	}
1394	else if ( (mpEveryOther != (MPARAM)-1) && (ulPixels != -1) )
1395	{
1396	SLDCDATA slcd;
1397	WNDPARAMS wp;
1398	memset(&wp, 0, sizeof(WNDPARAMS));
1399	wp.fsStatus = WPM_CTLDATA;
1400	wp.cbCtlData = sizeof(slcd);
1401	wp.pCtlData = &slcd;
1402	// get primary scale data from the slider
1403	if (WinSendMsg(hwndSlider,
1404	WM_QUERYWINDOWPARAMS,
1405	(MPARAM)&wp,
1406	0))
1407	{
1408	USHORT usStart = SHORT1FROMMP(mpEveryOther),
1409	usEveryOther = SHORT2FROMMP(mpEveryOther);
1410
1411	USHORT usScale1Max = slcd.usScale1Increments,
1412	us;
1413
1414	brc = TRUE;
1415
1416	for (us = usStart; us < usScale1Max; us += usEveryOther)
1417	{
1418	if (!(BOOL)WinSendMsg(hwndSlider,
1419	SLM_SETTICKSIZE,
1420	MPFROM2SHORT(us,
1421	ulPixels),
1422	NULL))
1423	{
1424	brc = FALSE;
1425	break;
1426	}
1427	}
1428	}
1429	}
1430
1431	// for the second loop, use second value set
1432	mpEveryOther = mpEveryOther2;
1433	ulPixels = ulPixels2;
1434	// we only loop twice
1435	} // end for (ulSet = 0; ulSet < 2;
1436
1437	return brc;
1438	}
1439
1440	/*
1441	*@@ winhReplaceWithCircularSlider:
1442	* this destroys the control with the ID ulID in hwndDlg
1443	* and creates a linear slider at the same position with the
1444	* same ID (effectively replacing it).
1445	*
1446	* This is needed because the IBM dialog editor (DLGEDIT.EXE)
1447	* cannot create circular sliders. So the way to do this
1448	* easily is to create some other control with DLGEDIT
1449	* where the slider should be later and call this function
1450	* on that control when the dialog is initialized.
1451	*
1452	* You need to specify the following with ulSliderStyle:
1453	* -- CSS_CIRCULARVALUE: draws a circular thumb, rather than a line,
1454	* for the value indicator.
1455	* -- CSS_MIDPOINT: makes the mid-point tick mark larger.
1456	* -- CSS_NOBUTTON: does not display value buttons. Per default, the
1457	* slider displays "-" and "+" buttons to the bottom left
1458	* and bottom right of the knob. (BTW, these bitmaps can be
1459	* changed using CSM_SETBITMAPDATA.)
1460	* -- CSS_NONUMBER: does not display the value on the dial.
1461	* -- CSS_NOTEXT: does not display title text under the dial.
1462	* Otherwise, the text in the pszTitle parameter
1463	* will be used.
1464	* -- CSS_NOTICKS (only listed in pmstddlg.h, not in PMREF):
1465	* obviously, this prevents tick marks from being drawn.
1466	* -- CSS_POINTSELECT: permits the values on the circular slider
1467	* to change immediately when dragged.
1468	* Direct manipulation is performed by using a mouse to
1469	* click on and drag the circular slider. There are two
1470	* modes of direct manipulation for the circular slider:
1471	* <BR><B>1)</B> The default direct manipulation mode is to scroll to
1472	* the value indicated by the position of the mouse.
1473	* This could be important if you used a circular slider
1474	* for a volume control, for example. Increasing the volume
1475	* from 0% to 100% too quickly could result in damage to
1476	* both the user's ears and the equipment.
1477	* <BR><B>2)</B>The other mode of direct manipulation permits
1478	* the value on the circular slider to change immediately when dragged.
1479	* This mode is enabled using the CSS_POINTSELECT style bit. When this
1480	* style is used, the value of the dial can be changed by tracking
1481	* the value with the mouse, which changes values quickly.
1482	* -- CSS_PROPORTIONALTICKS: allow the length of the tick marks to be calculated
1483	* as a percentage of the radius (for small sliders).
1484	* -- CSS_360: permits the scroll range to extend 360 degrees.
1485	* CSS_360 forces the CSS_NONUMBER style on. This is necessary
1486	* to keep the value indicator from corrupting the number value.
1487	*
1488	* FYI: The most commonly known circular slider in OS/2, the one in the
1489	* default "Sound" object, has a style of 0x9002018a, meaning
1490	* CSS_NOTEXT \| CSS_POINTSELECT \| CSS_NOTICKS.
1491	*
1492	* Notes: This function automatically adds WS_PARENTCLIP,
1493	* WS_TABSTOP, and WS_SYNCPAINT to the specified styles.
1494	* For the WS_TABSTOP style, hwndInsertAfter is important.
1495	* If you specify HWND_TOP, your window will be the first
1496	* in the tab stop list.
1497	*
1498	* It also shows the slider after having done all the
1499	* processing in here by calling WinShowWindow.
1500	*
1501	* This returns the HWND of the slider or NULLHANDLE upon
1502	* errors.
1503	*
1504	*@@added V0.9.0 [umoeller]
1505	*/
1506
1507	HWND winhReplaceWithCircularSlider(HWND hwndParent, // in: parent of old control and slider
1508	HWND hwndOwner, // in: owner of old control and slider
1509	HWND hwndInsertAfter, // in: the control after which the slider should
1510	// come up, or HWND_TOP, or HWND_BOTTOM
1511	ULONG ulID, // in: ID of old control and slider
1512	ULONG ulSliderStyle, // in: SLS_* styles
1513	SHORT sMin, // in: minimum value (e.g. 0)
1514	SHORT sMax, // in: maximum value (e.g. 100)
1515	USHORT usIncrement, // in: minimum increment (e.g. 1)
1516	USHORT usTicksEvery) // in: ticks ever x values (e.g. 20)
1517	{
1518	HWND hwndSlider = NULLHANDLE;
1519	HWND hwndKill = WinWindowFromID(hwndParent, ulID);
1520	if (hwndKill)
1521	{
1522	SWP swpControl;
1523	if (WinQueryWindowPos(hwndKill, &swpControl))
1524	{
1525	// destroy the old control
1526	WinDestroyWindow(hwndKill);
1527
1528	// WinRegisterCircularSlider();
1529
1530	// create a slider with the same ID at the same
1531	// position
1532	hwndSlider = WinCreateWindow(hwndParent,
1533	WC_CIRCULARSLIDER,
1534	"dummy", // no window text
1535	ulSliderStyle
1536	// \| WS_PARENTCLIP
1537	// \| WS_SYNCPAINT
1538	\| WS_TABSTOP,
1539	swpControl.x,
1540	swpControl.y,
1541	swpControl.cx,
1542	swpControl.cy,
1543	hwndOwner,
1544	hwndInsertAfter,
1545	ulID, // same ID as destroyed control
1546	NULL, // control data
1547	NULL); // presparams
1548
1549	if (hwndSlider)
1550	{
1551	// set slider range
1552	WinSendMsg(hwndSlider,
1553	CSM_SETRANGE,
1554	(MPARAM)(ULONG)sMin,
1555	(MPARAM)(ULONG)sMax);
1556
1557	// set slider increments
1558	WinSendMsg(hwndSlider,
1559	CSM_SETINCREMENT,
1560	(MPARAM)(ULONG)usIncrement,
1561	(MPARAM)(ULONG)usTicksEvery);
1562
1563	// set slider value
1564	WinSendMsg(hwndSlider,
1565	CSM_SETVALUE,
1566	(MPARAM)0,
1567	(MPARAM)0);
1568
1569	// for some reason, the slider always has
1570	// WS_CLIPSIBLINGS set, even though we don't
1571	// set this; we must unset this now, or
1572	// the slider won't draw itself (%&$&%"$&%!!!)
1573	WinSetWindowBits(hwndSlider,
1574	QWL_STYLE,
1575	0, // unset bit
1576	WS_CLIPSIBLINGS);
1577
1578	WinShowWindow(hwndSlider, TRUE);
1579	}
1580	}
1581	}
1582
1583	return hwndSlider;
1584	}
1585
1586	/*
1587	*@@category: Helpers\PM helpers\Spin button helpers
1588	*/
1589
1590	/* ******************************************************************
1591	*
1592	* Spin button helpers
1593	*
1594	********************************************************************/
1595
1596	/*
1597	*@@ winhSetDlgItemSpinData:
1598	* sets a spin button's limits and data within a dialog window.
1599	* This only works for decimal spin buttons.
1600	*/
1601
1602	VOID winhSetDlgItemSpinData(HWND hwndDlg, // in: dlg window
1603	ULONG idSpinButton, // in: item ID of spin button
1604	ULONG min, // in: minimum allowed value
1605	ULONG max, // in: maximum allowed value
1606	ULONG current) // in: new current value
1607	{
1608	HWND hwndSpinButton = WinWindowFromID(hwndDlg, idSpinButton);
1609	if (hwndSpinButton)
1610	{
1611	WinSendMsg(hwndSpinButton,
1612	SPBM_SETLIMITS, // Set limits message
1613	(MPARAM)max, // Spin Button maximum setting
1614	(MPARAM)min); // Spin Button minimum setting
1615
1616	WinSendMsg(hwndSpinButton,
1617	SPBM_SETCURRENTVALUE, // Set current value message
1618	(MPARAM)current,
1619	(MPARAM)NULL);
1620	}
1621	}
1622
1623	/*
1624	*@@ winhAdjustDlgItemSpinData:
1625	* this can be called on a spin button control to
1626	* have its current data snap to a grid. This only
1627	* works for LONG integer values.
1628	*
1629	* For example, if you specify 100 for the grid and call
1630	* this func after you have received SPBN_UP/DOWNARROW,
1631	* the spin button's value will always in/decrease
1632	* so that the spin button's value is a multiple of 100.
1633	*
1634	* By contrast, if (lGrid < 0), this will not really
1635	* snap the value to a multiple of -lGrid, but instead
1636	* in/decrease the value by -lGrid. The value will not
1637	* necessarily be a multiple of the grid. (0.9.14)
1638	*
1639	* This returns the "snapped" value to which the spin
1640	* button was set.
1641	*
1642	* If you specify lGrid == 0, this returns the spin
1643	* button's value only without snapping (V0.9.0).
1644	*
1645	*@@changed V0.9.0 [umoeller]: added check for lGrid == 0 (caused division by zero previously)
1646	*@@changed V0.9.14 (2001-08-03) [umoeller]: added fixes for age-old problems with wrap around
1647	*@@changed V0.9.14 (2001-08-03) [umoeller]: added lGrid < 0 mode
1648	*/
1649
1650	LONG winhAdjustDlgItemSpinData(HWND hwndDlg, // in: dlg window
1651	USHORT usItemID, // in: item ID of spin button
1652	LONG lGrid, // in: grid
1653	USHORT usNotifyCode) // in: SPBN_UP* or *DOWNARROW of WM_CONTROL message
1654	{
1655	HWND hwndSpin = WinWindowFromID(hwndDlg, usItemID);
1656	LONG lBottom, lTop, lValue;
1657
1658	// get value, which has already increased /
1659	// decreased by 1
1660	WinSendMsg(hwndSpin,
1661	SPBM_QUERYVALUE,
1662	(MPARAM)&lValue,
1663	MPFROM2SHORT(0, SPBQ_ALWAYSUPDATE));
1664
1665	if ((lGrid)
1666	&& ( (usNotifyCode == SPBN_UPARROW)
1667	\|\| (usNotifyCode == SPBN_DOWNARROW)
1668	)
1669	)
1670	{
1671	// only if the up/down buttons were pressed,
1672	// snap to the nearest grid; if the user
1673	// manually enters something (SPBN_CHANGE),
1674	// we'll accept that value
1675	LONG lChanged = (usNotifyCode == SPBN_UPARROW)
1676	// if the spin button went up, subtract 1
1677	? -1
1678	: +1;
1679	LONG lPrev = lValue + lChanged;
1680
1681	// if grid is negative, it is assumed to
1682	// not be a "real" grid but jump in those
1683	// steps only
1684	if (lGrid < 0)
1685	{
1686	// add /subtract grid
1687	if (usNotifyCode == SPBN_UPARROW)
1688	lValue = lPrev - lGrid;
1689	else
1690	lValue = lPrev + lGrid;
1691
1692	// lValue = (lValue / lGrid) * lGrid;
1693	}
1694	else
1695	{
1696	// add /subtract grid
1697	if (usNotifyCode == SPBN_UPARROW)
1698	lValue = lPrev + lGrid;
1699	else
1700	lValue = lPrev - lGrid;
1701
1702	lValue = (lValue / lGrid) * lGrid;
1703	}
1704
1705	// balance with spin button limits
1706	WinSendMsg(hwndSpin,
1707	SPBM_QUERYLIMITS,
1708	(MPARAM)&lTop,
1709	(MPARAM)&lBottom);
1710	if (lValue < lBottom)
1711	lValue = lTop;
1712	else if (lValue > lTop)
1713	lValue = lBottom;
1714
1715	WinSendMsg(hwndSpin,
1716	SPBM_SETCURRENTVALUE,
1717	(MPARAM)(lValue),
1718	MPNULL);
1719	}
1720	return lValue;
1721	}
1722
1723	/*
1724	*@@category: Helpers\PM helpers\List box helpers
1725	*/
1726
1727	/* ******************************************************************
1728	*
1729	* List box helpers
1730	*
1731	********************************************************************/
1732
1733	/*
1734	*@@ winhQueryLboxItemText:
1735	* returns the text of the specified
1736	* list box item in a newly allocated
1737	* buffer.
1738	*
1739	* Returns NULL on error. Use fre()
1740	* to free the return value.
1741	*
1742	*@@added V0.9.1 (99-12-14) [umoeller]
1743	*/
1744
1745	PSZ winhQueryLboxItemText(HWND hwndListbox,
1746	SHORT sIndex)
1747	{
1748	PSZ pszReturn = 0;
1749	SHORT cbText = SHORT1FROMMR(WinSendMsg(hwndListbox,
1750	LM_QUERYITEMTEXTLENGTH,
1751	(MPARAM)(ULONG)sIndex,
1752	0));
1753	if ((cbText) && (cbText != LIT_ERROR))
1754	{
1755	pszReturn = (PSZ)malloc(cbText + 1); // add zero terminator
1756	WinSendMsg(hwndListbox,
1757	LM_QUERYITEMTEXT,
1758	MPFROM2SHORT(sIndex,
1759	cbText + 1),
1760	(MPARAM)pszReturn);
1761	}
1762
1763	return pszReturn;
1764	}
1765
1766	/*
1767	*@@ winhMoveLboxItem:
1768	* this moves one list box item from one
1769	* list box to another, including the
1770	* item text and the item "handle"
1771	* (see LM_QUERYITEMHANDLE).
1772	*
1773	* sTargetIndex can either be a regular
1774	* item index or one of the following
1775	* (as in LM_INSERTITEM):
1776	* -- LIT_END
1777	* -- LIT_SORTASCENDING
1778	* -- LIT_SORTDESCENDING
1779	*
1780	* If (fSelectTarget == TRUE), the new
1781	* item is also selected in the target
1782	* list box.
1783	*
1784	* Returns FALSE if moving failed. In
1785	* that case, the list boxes are unchanged.
1786	*
1787	*@@added V0.9.1 (99-12-14) [umoeller]
1788	*/
1789
1790	BOOL winhMoveLboxItem(HWND hwndSource,
1791	SHORT sSourceIndex,
1792	HWND hwndTarget,
1793	SHORT sTargetIndex,
1794	BOOL fSelectTarget)
1795	{
1796	BOOL brc = FALSE;
1797
1798	PSZ pszItemText = winhQueryLboxItemText(hwndSource, sSourceIndex);
1799	if (pszItemText)
1800	{
1801	ULONG ulItemHandle = winhQueryLboxItemHandle(hwndSource,
1802	sSourceIndex);
1803	// probably 0, if not used
1804	LONG lTargetIndex = WinInsertLboxItem(hwndTarget,
1805	sTargetIndex,
1806	pszItemText);
1807	if ( (lTargetIndex != LIT_ERROR)
1808	&& (lTargetIndex != LIT_MEMERROR)
1809	)
1810	{
1811	// successfully inserted:
1812	winhSetLboxItemHandle(hwndTarget, lTargetIndex, ulItemHandle);
1813	if (fSelectTarget)
1814	winhSetLboxSelectedItem(hwndTarget, lTargetIndex, TRUE);
1815
1816	// remove source
1817	WinDeleteLboxItem(hwndSource,
1818	sSourceIndex);
1819
1820	brc = TRUE;
1821	}
1822
1823	free(pszItemText);
1824	}
1825
1826	return brc;
1827	}
1828
1829	/*
1830	*@@ winhLboxSelectAll:
1831	* this selects or deselects all items in the
1832	* given list box, depending on fSelect.
1833	*
1834	* Returns the number of items in the list box.
1835	*/
1836
1837	ULONG winhLboxSelectAll(HWND hwndListBox, // in: list box
1838	BOOL fSelect) // in: TRUE = select, FALSE = deselect
1839	{
1840	LONG lItemCount = WinQueryLboxCount(hwndListBox);
1841	ULONG ul;
1842
1843	for (ul = 0; ul < lItemCount; ul++)
1844	{
1845	WinSendMsg(hwndListBox,
1846	LM_SELECTITEM,
1847	(MPARAM)ul, // index
1848	(MPARAM)fSelect);
1849	}
1850
1851	return lItemCount;
1852	}
1853
1854	/*
1855	*@@ winhLboxFindItemFromHandle:
1856	* finds the list box item with the specified
1857	* handle.
1858	*
1859	* Of course this only makes sense if each item
1860	* has a unique handle indeed.
1861	*
1862	* Returns the index of the item found or -1.
1863	*
1864	*@@added V0.9.12 (2001-05-18) [umoeller]
1865	*/
1866
1867	ULONG winhLboxFindItemFromHandle(HWND hwndListBox,
1868	ULONG ulHandle)
1869	{
1870	LONG cItems;
1871	if (cItems = WinQueryLboxCount(hwndListBox))
1872	{
1873	ULONG ul;
1874	for (ul = 0;
1875	ul < cItems;
1876	ul++)
1877	{
1878	if (ulHandle == winhQueryLboxItemHandle(hwndListBox,
1879	ul))
1880	return ul;
1881	}
1882	}
1883
1884	return -1;
1885	}
1886
1887	/*
1888	*@@category: Helpers\PM helpers\Scroll bar helpers
1889	*/
1890
1891	/* ******************************************************************
1892	*
1893	* Scroll bar helpers
1894	*
1895	********************************************************************/
1896
1897	/*
1898	*@@ winhUpdateScrollBar:
1899	* updates the given scroll bar according to the given
1900	* values. This updates the scroll bar's thumb size,
1901	* extension, and position, all in one shot.
1902	*
1903	* This function usually gets called when the window is
1904	* created and later when the window is resized.
1905	*
1906	* This simplifies the typical functionality of a scroll
1907	* bar in a client window which is to be scrolled. I am
1908	* wondering why IBM never included such a function, since
1909	* it is so damn basic and still writing it cost me a whole
1910	* day.
1911	*
1912	* Terminology:
1913	*
1914	* -- "window": the actual window with scroll bars which displays
1915	* a subrectangle of the available data. With a typical PM
1916	* application, this will be your client window.
1917	*
1918	* The width or height of this must be passed in ulWinPels.
1919	*
1920	* -- "viewport": the entire data to be displayed, of which the
1921	* "window" can only display a subrectangle, if the viewport
1922	* is larger than the window.
1923	*
1924	* The width or height of this must be passed in ulViewportPels.
1925	* This can be smaller than ulWinPels (if the window is larger
1926	* than the data) or the same or larger than ulWinPels
1927	* (if the window is too small to show all the data).
1928	*
1929	* -- "window offset": the offset of the current window within
1930	* the viewport.
1931	*
1932	* For horizontal scroll bars, this is the X coordinate,
1933	* counting from the left of the window (0 means leftmost).
1934	*
1935	* For vertical scroll bars, this is counted from the _top_
1936	* of the viewport (0 means topmost, as opposed to OS/2
1937	* window coordinates!). This is because for vertical scroll
1938	* bars controls, higher values move the thumb _down_. Yes
1939	* indeed, this conflicts with PM's coordinate system.
1940	*
1941	* The window offset is therefore always positive.
1942	*
1943	* The scroll bar gets disabled if the entire viewport is visible,
1944	* that is, if ulViewportPels <= ulWinPels. In that case
1945	* FALSE is returned. If (fAutoHide == TRUE), the scroll
1946	* bar is not only disabled, but also hidden from the display.
1947	* In that case, you will need to reformat your output because
1948	* your viewport becomes larger without the scroll bar.
1949	*
1950	* This function will set the range of the scroll bar to 0 up
1951	* to a value depending on the viewport size. For vertical scroll
1952	* bars, 0 means topmost (which is kinda sick with the OS/2
1953	* coordinate system), for horizontal scroll bars, 0 means leftmost.
1954	*
1955	* The maximum value of the scroll bar will be
1956	*
1957	+ (ulViewportPels - ulWinPels) / usScrollUnitPels
1958	*
1959	* The thumb size of the scroll bar will also be adjusted
1960	* based on the viewport and window size, as it should be.
1961	*
1962	*@@added V0.9.1 (2000-02-14) [umoeller]
1963	*@@changed V0.9.3 (2000-04-30) [umoeller]: fixed pels/unit confusion
1964	*@@changed V0.9.3 (2000-05-08) [umoeller]: now handling scroll units automatically
1965	*/
1966
1967	BOOL winhUpdateScrollBar(HWND hwndScrollBar, // in: scroll bar (vertical or horizontal)
1968	ULONG ulWinPels, // in: vertical or horizontal dimension of
1969	// visible window part (in pixels),
1970	// excluding the scroll bar!
1971	ULONG ulViewportPels, // in: dimension of total data part, of
1972	// which ulWinPels is a sub-dimension
1973	// (in pixels);
1974	// if <= ulWinPels, the scrollbar will be
1975	// disabled
1976	ULONG ulCurPelsOfs, // in: current offset of visible part
1977	// (in pixels)
1978	BOOL fAutoHide) // in: hide scroll bar if disabled
1979	{
1980	BOOL brc = FALSE;
1981
1982	// _Pmpf(("Entering winhUpdateScrollBar"));
1983
1984	// for large viewports, adjust scroll bar units
1985	USHORT usScrollUnitPels = 1;
1986	if (ulViewportPels > 10000)
1987	usScrollUnitPels = 100;
1988
1989	if (ulViewportPels > ulWinPels)
1990	{
1991	// scrollbar needed:
1992	USHORT usThumbDivisorUnits = usScrollUnitPels;
1993	USHORT lMaxAllowedUnitOfs;
1994	// _Pmpf(("winhUpdateScrollBar: ulViewportPels > ulWinPels, enabling scroller"));
1995	// divisor for thumb size (below)
1996	if (ulViewportPels > 10000)
1997	// for very large viewports, we need to
1998	// raise the divisor, because we only
1999	// have a USHORT
2000	usThumbDivisorUnits = usScrollUnitPels * 100;
2001
2002	// viewport is larger than window:
2003	WinEnableWindow(hwndScrollBar, TRUE);
2004	if (fAutoHide)
2005	WinShowWindow(hwndScrollBar, TRUE);
2006
2007	// calculate limit
2008	lMaxAllowedUnitOfs = ((ulViewportPels - ulWinPels + usScrollUnitPels)
2009	// scroll unit is 10
2010	/ usScrollUnitPels);
2011
2012	// _Pmpf((" usCurUnitOfs: %d", ulCurUnitOfs));
2013	// _Pmpf((" usMaxUnits: %d", lMaxAllowedUnitOfs));
2014
2015	// set thumb position and limit
2016	WinSendMsg(hwndScrollBar,
2017	SBM_SETSCROLLBAR,
2018	(MPARAM)(ulCurPelsOfs), // / usThumbDivisorUnits), // position: 0 means top
2019	MPFROM2SHORT(0, // minimum
2020	lMaxAllowedUnitOfs)); // maximum
2021
2022	// set thumb size based on ulWinPels and
2023	// ulViewportPels
2024	WinSendMsg(hwndScrollBar,
2025	SBM_SETTHUMBSIZE,
2026	MPFROM2SHORT( ulWinPels / usThumbDivisorUnits, // visible
2027	ulViewportPels / usThumbDivisorUnits), // total
2028	0);
2029	brc = TRUE;
2030	}
2031	else
2032	{
2033	// _Pmpf(("winhUpdateScrollBar: ulViewportPels <= ulWinPels"));
2034	// entire viewport is visible:
2035	WinEnableWindow(hwndScrollBar, FALSE);
2036	if (fAutoHide)
2037	WinShowWindow(hwndScrollBar, FALSE);
2038	}
2039
2040	// _Pmpf(("End of winhUpdateScrollBar"));
2041
2042	return brc;
2043	}
2044
2045	/*
2046	*@@ winhHandleScrollMsg:
2047	* this helper handles a WM_VSCROLL or WM_HSCROLL
2048	* message posted to a client window when the user
2049	* has worked on a client scroll bar. Calling this
2050	* function is ALL you need to do to handle those
2051	* two messages.
2052	*
2053	* This is most useful in conjunction with winhUpdateScrollBar.
2054	* See that function for the terminology also.
2055	*
2056	* This function calculates the new scrollbar position
2057	* (from the mp2 value, which can be line up/down,
2058	* page up/down, or slider track) and calls WinScrollWindow
2059	* accordingly. The window part which became invalid
2060	* because of the scrolling is automatically invalidated
2061	* (using WinInvalidateRect), so expect a WM_PAINT after
2062	* calling this function.
2063	*
2064	* This function assumes that the scrollbar operates
2065	* on values starting from zero. The maximum value
2066	* of the scroll bar is:
2067	*
2068	+ ulViewportPels - (prcl2Scroll->yTop - prcl2Scroll->yBottom)
2069	*
2070	* This function also automatically changes the scroll bar
2071	* units, should you have a viewport size which doesn't fit
2072	* into the SHORT's that the scroll bar uses internally. As
2073	* a result, this function handles a the complete range of
2074	* a ULONG for the viewport.
2075	*
2076	* Replace "bottom" and "top" with "right" and "left" for
2077	* horizontal scrollbars in the above formula.
2078	*
2079	*@@added V0.9.1 (2000-02-13) [umoeller]
2080	*@@changed V0.9.3 (2000-04-30) [umoeller]: changed prototype, fixed pels/unit confusion
2081	*@@changed V0.9.3 (2000-05-08) [umoeller]: now handling scroll units automatically
2082	*@@changed V0.9.7 (2001-01-17) [umoeller]: changed PLONG to PULONG
2083	*/
2084
2085	BOOL winhHandleScrollMsg(HWND hwnd2Scroll, // in: client window to scroll
2086	HWND hwndScrollBar, // in: vertical or horizontal scroll bar window
2087	PULONG pulCurPelsOfs, // in/out: current viewport offset;
2088	// this is updated with the proper scroll units
2089	PRECTL prcl2Scroll, // in: hwnd2Scroll rectangle to scroll
2090	// (in window coordinates);
2091	// this is passed to WinScrollWindow,
2092	// which considers this inclusive!
2093	LONG ulViewportPels, // in: total viewport dimension,
2094	// into which *pulCurPelsOfs is an offset
2095	USHORT usLineStepPels, // in: pixels to scroll line-wise
2096	// (scroll bar buttons pressed)
2097	ULONG msg, // in: either WM_VSCROLL or WM_HSCROLL
2098	MPARAM mp2) // in: complete mp2 of WM_VSCROLL/WM_HSCROLL;
2099	// this has two SHORT's (usPos and usCmd),
2100	// see PMREF for details
2101	{
2102	ULONG ulOldPelsOfs = *pulCurPelsOfs;
2103	USHORT usPosUnits = SHORT1FROMMP(mp2), // in scroll units
2104	usCmd = SHORT2FROMMP(mp2);
2105	LONG lMaxAllowedUnitOfs;
2106	ULONG ulWinPels;
2107
2108	// for large viewports, adjust scroll bar units
2109	USHORT usScrollUnitPels = 1;
2110	if (ulViewportPels > 10000)
2111	usScrollUnitPels = 100;
2112
2113	// calculate window size (vertical or horizontal)
2114	if (msg == WM_VSCROLL)
2115	ulWinPels = (prcl2Scroll->yTop - prcl2Scroll->yBottom);
2116	else
2117	ulWinPels = (prcl2Scroll->xRight - prcl2Scroll->xLeft);
2118
2119	lMaxAllowedUnitOfs = ((LONG)ulViewportPels - ulWinPels) / usScrollUnitPels;
2120
2121	// _Pmpf(("Entering winhHandleScrollMsg"));
2122
2123	switch (usCmd)
2124	{
2125	case SB_LINEUP:
2126	if (*pulCurPelsOfs > usLineStepPels)
2127	pulCurPelsOfs -= usLineStepPels; // usScrollUnitPels);
2128	else
2129	*pulCurPelsOfs = 0;
2130	break;
2131
2132	case SB_LINEDOWN:
2133	pulCurPelsOfs += usLineStepPels; // usScrollUnitPels);
2134	break;
2135
2136	case SB_PAGEUP:
2137	if (*pulCurPelsOfs > ulWinPels)
2138	*pulCurPelsOfs -= ulWinPels; // convert to units
2139	else
2140	*pulCurPelsOfs = 0;
2141	break;
2142
2143	case SB_PAGEDOWN:
2144	*pulCurPelsOfs += ulWinPels; // convert to units
2145	break;
2146
2147	case SB_SLIDERTRACK:
2148	pulCurPelsOfs = (usPosUnits usScrollUnitPels);
2149	// _Pmpf((" SB_SLIDERTRACK: usUnits = %d", usPosUnits));
2150	break;
2151
2152	case SB_SLIDERPOSITION:
2153	pulCurPelsOfs = (usPosUnits usScrollUnitPels);
2154	break;
2155	}
2156
2157	// are we close to the lower limit?
2158	/* if (*plCurUnitOfs < usLineStepUnits) // usScrollUnit)
2159	*plCurUnitOfs = 0;
2160	// are we close to the upper limit?
2161	else if (*plCurUnitOfs + usLineStepUnits > lMaxUnitOfs)
2162	{
2163	_Pmpf((" !!! limiting: %d to %d", *plCurUnitOfs, lMaxUnitOfs));
2164	*plCurUnitOfs = lMaxUnitOfs;
2165	} */
2166
2167	/* if (*plCurPelsOfs < 0)
2168	plCurPelsOfs = 0; / // checked above
2169	if (pulCurPelsOfs > (lMaxAllowedUnitOfs usScrollUnitPels))
2170	{
2171	pulCurPelsOfs = (lMaxAllowedUnitOfs usScrollUnitPels);
2172	}
2173	if ( (*pulCurPelsOfs != ulOldPelsOfs)
2174	\|\| (*pulCurPelsOfs == 0)
2175	\|\| (pulCurPelsOfs == (lMaxAllowedUnitOfs usScrollUnitPels))
2176	)
2177	{
2178	RECTL rcl2Scroll,
2179	rcl2Update;
2180
2181	// changed:
2182	WinSendMsg(hwndScrollBar,
2183	SBM_SETPOS,
2184	(MPARAM)(*pulCurPelsOfs / usScrollUnitPels), // / usScrollUnit),
2185	0);
2186	// scroll window rectangle:
2187	rcl2Scroll.xLeft = prcl2Scroll->xLeft;
2188	rcl2Scroll.xRight = prcl2Scroll->xRight;
2189	rcl2Scroll.yBottom = prcl2Scroll->yBottom;
2190	rcl2Scroll.yTop = prcl2Scroll->yTop;
2191
2192	if (msg == WM_VSCROLL)
2193	WinScrollWindow(hwnd2Scroll,
2194	0,
2195	(*pulCurPelsOfs - ulOldPelsOfs) // scroll units changed
2196	, // * usScrollUnitPels, // convert to pels
2197	&rcl2Scroll, // rcl to scroll
2198	prcl2Scroll, // clipping rect
2199	NULLHANDLE, // no region
2200	&rcl2Update,
2201	0);
2202	else
2203	WinScrollWindow(hwnd2Scroll,
2204	-(LONG)(*pulCurPelsOfs - ulOldPelsOfs) // scroll units changed
2205	, // * usScrollUnitPels,
2206	0,
2207	&rcl2Scroll, // rcl to scroll
2208	prcl2Scroll, // clipping rect
2209	NULLHANDLE, // no region
2210	&rcl2Update,
2211	0);
2212
2213	// WinScrollWindow has stored the invalid window
2214	// rectangle which needs to be repainted in rcl2Update:
2215	WinInvalidateRect(hwnd2Scroll, &rcl2Update, FALSE);
2216	}
2217
2218	// _Pmpf(("End of winhHandleScrollMsg"));
2219
2220	return TRUE;
2221	}
2222
2223	/*
2224	*@@ winhProcessScrollChars:
2225	* helper for processing WM_CHAR messages for
2226	* client windows with scroll bars.
2227	*
2228	* If your window has scroll bars, you normally
2229	* need to process a number of keystrokes to be
2230	* able to scroll the window contents. This is
2231	* tiresome to code, so here is a helper.
2232	*
2233	* When receiving WM_CHAR, call this function.
2234	* If this returns TRUE, the keystroke has been
2235	* a scroll keystroke, and the window has been
2236	* updated (by sending WM_VSCROLL or WM_HSCROLL
2237	* to hwndClient). Otherwise, you should process
2238	* the keystroke as usual because it's not a
2239	* scroll keystroke.
2240	*
2241	* The following keystrokes are processed here:
2242	*
2243	* -- "cursor up, down, right, left": scroll one
2244	* line in the proper direction.
2245	* -- "page up, down": scroll one page up or down.
2246	* -- "Home": scroll leftmost.
2247	* -- "Ctrl+ Home": scroll topmost.
2248	* -- "End": scroll rightmost.
2249	* -- "Ctrl+ End": scroll bottommost.
2250	* -- "Ctrl + page up, down": scroll one screen left or right.
2251	*
2252	* This is CUA behavior.
2253	*
2254	* Returns TRUE if the message has been
2255	* processed.
2256	*
2257	*@@added V0.9.3 (2000-04-29) [umoeller]
2258	*@@changed V0.9.9 (2001-02-01) [lafaix]: Ctrl+PgUp/Dn now do one screen left/right
2259	*/
2260
2261	BOOL winhProcessScrollChars(HWND hwndClient, // in: client window
2262	HWND hwndVScroll, // in: vertical scroll bar
2263	HWND hwndHScroll, // in: horizontal scroll bar
2264	MPARAM mp1, // in: WM_CHAR mp1
2265	MPARAM mp2, // in: WM_CHAR mp2
2266	ULONG ulVertMax, // in: maximum viewport cy
2267	ULONG ulHorzMax) // in: maximum viewport cx
2268	{
2269	BOOL fProcessed = FALSE;
2270	USHORT usFlags = SHORT1FROMMP(mp1);
2271	// USHORT usch = SHORT1FROMMP(mp2);
2272	USHORT usvk = SHORT2FROMMP(mp2);
2273
2274	// _Pmpf(("Entering winhProcessScrollChars"));
2275
2276	if (usFlags & KC_VIRTUALKEY)
2277	{
2278	ULONG ulMsg = 0;
2279	SHORT sPos = 0;
2280	SHORT usCmd = 0;
2281	fProcessed = TRUE;
2282
2283	switch (usvk)
2284	{
2285	case VK_UP:
2286	ulMsg = WM_VSCROLL;
2287	usCmd = SB_LINEUP;
2288	break;
2289
2290	case VK_DOWN:
2291	ulMsg = WM_VSCROLL;
2292	usCmd = SB_LINEDOWN;
2293	break;
2294
2295	case VK_RIGHT:
2296	ulMsg = WM_HSCROLL;
2297	usCmd = SB_LINERIGHT;
2298	break;
2299
2300	case VK_LEFT:
2301	ulMsg = WM_HSCROLL;
2302	usCmd = SB_LINELEFT;
2303	break;
2304
2305	case VK_PAGEUP:
2306	if (usFlags & KC_CTRL)
2307	ulMsg = WM_HSCROLL;
2308	else
2309	ulMsg = WM_VSCROLL;
2310	usCmd = SB_PAGEUP;
2311	break;
2312
2313	case VK_PAGEDOWN:
2314	if (usFlags & KC_CTRL)
2315	ulMsg = WM_HSCROLL;
2316	else
2317	ulMsg = WM_VSCROLL;
2318	usCmd = SB_PAGEDOWN;
2319	break;
2320
2321	case VK_HOME:
2322	if (usFlags & KC_CTRL)
2323	// vertical:
2324	ulMsg = WM_VSCROLL;
2325	else
2326	ulMsg = WM_HSCROLL;
2327
2328	sPos = 0;
2329	usCmd = SB_SLIDERPOSITION;
2330	break;
2331
2332	case VK_END:
2333	if (usFlags & KC_CTRL)
2334	{
2335	// vertical:
2336	ulMsg = WM_VSCROLL;
2337	sPos = ulVertMax;
2338	}
2339	else
2340	{
2341	ulMsg = WM_HSCROLL;
2342	sPos = ulHorzMax;
2343	}
2344
2345	usCmd = SB_SLIDERPOSITION;
2346	break;
2347
2348	default:
2349	// other:
2350	fProcessed = FALSE;
2351	}
2352
2353	if ( ((usFlags & KC_KEYUP) == 0)
2354	&& (ulMsg)
2355	)
2356	{
2357	HWND hwndScrollBar = ((ulMsg == WM_VSCROLL)
2358	? hwndVScroll
2359	: hwndHScroll);
2360	if (WinIsWindowEnabled(hwndScrollBar))
2361	{
2362	USHORT usID = WinQueryWindowUShort(hwndScrollBar,
2363	QWS_ID);
2364	WinSendMsg(hwndClient,
2365	ulMsg,
2366	MPFROMSHORT(usID),
2367	MPFROM2SHORT(sPos,
2368	usCmd));
2369	}
2370	}
2371	}
2372
2373	// _Pmpf(("End of winhProcessScrollChars"));
2374
2375	return fProcessed;
2376	}
2377
2378	/*
2379	*@@category: Helpers\PM helpers\Window positioning
2380	*/
2381
2382	/* ******************************************************************
2383	*
2384	* Window positioning helpers
2385	*
2386	********************************************************************/
2387
2388	/*
2389	*@@ winhSaveWindowPos:
2390	* saves the position of a certain window. As opposed
2391	* to the barely documented WinStoreWindowPos API, this
2392	* one only saves one regular SWP structure for the given
2393	* window, as returned by WinQueryWindowPos for hwnd.
2394	*
2395	* If the window is currently maximized or minimized,
2396	* we won't store the current window size and position
2397	* (which wouldn't make much sense), but retrieve the
2398	* "restored" window position from the window words
2399	* instead.
2400	*
2401	* The window should still be visible on the screen
2402	* when calling this function. Do not call it in WM_DESTROY,
2403	* because then the SWP data is no longer valid.
2404	*
2405	* This returns TRUE if saving was successful.
2406	*
2407	*@@changed V0.9.1 (99-12-19) [umoeller]: added minimize/maximize support
2408	*/
2409
2410	BOOL winhSaveWindowPos(HWND hwnd, // in: window to save
2411	HINI hIni, // in: INI file (or HINI_USER/SYSTEM)
2412	const char *pcszApp, // in: INI application name
2413	const char *pcszKey) // in: INI key name
2414	{
2415	BOOL brc = FALSE;
2416	SWP swp;
2417	if (WinQueryWindowPos(hwnd, &swp))
2418	{
2419	if (swp.fl & (SWP_MAXIMIZE \| SWP_MINIMIZE))
2420	{
2421	// window currently maximized or minimized:
2422	// retrieve "restore" position from window words
2423	swp.x = WinQueryWindowUShort(hwnd, QWS_XRESTORE);
2424	swp.y = WinQueryWindowUShort(hwnd, QWS_YRESTORE);
2425	swp.cx = WinQueryWindowUShort(hwnd, QWS_CXRESTORE);
2426	swp.cy = WinQueryWindowUShort(hwnd, QWS_CYRESTORE);
2427	}
2428
2429	brc = PrfWriteProfileData(hIni, (PSZ)pcszApp, (PSZ)pcszKey, &swp, sizeof(swp));
2430	}
2431	return brc;
2432	}
2433
2434	/*
2435	*@@ winhRestoreWindowPos:
2436	* this will retrieve a window position which was
2437	* previously stored using winhSaveWindowPos.
2438	*
2439	* The window should not be visible to avoid flickering.
2440	* "fl" must contain the SWP_flags as in WinSetWindowPos.
2441	*
2442	* Note that only the following may be used:
2443	* -- SWP_MOVE reposition the window
2444	* -- SWP_SIZE also resize the window to
2445	* the stored position; this might
2446	* lead to problems with different
2447	* video resolutions, so be careful.
2448	* -- SWP_SHOW make window visible too
2449	* -- SWP_NOREDRAW changes are not redrawn
2450	* -- SWP_NOADJUST do not send a WM_ADJUSTWINDOWPOS message
2451	* before moving or sizing
2452	* -- SWP_ACTIVATE activate window (make topmost)
2453	* -- SWP_DEACTIVATE deactivate window (make bottommost)
2454	*
2455	* Do not specify any other SWP_* flags.
2456	*
2457	* If SWP_SIZE is not set, the window will be moved only.
2458	*
2459	* This returns TRUE if INI data was found.
2460	*
2461	* This function automatically checks for whether the
2462	* window would be positioned outside the visible screen
2463	* area and will adjust coordinates accordingly. This can
2464	* happen when changing video resolutions.
2465	*
2466	*@@changed V0.9.7 (2000-12-20) [umoeller]: fixed invalid params if INI key not found
2467	*/
2468
2469	BOOL winhRestoreWindowPos(HWND hwnd, // in: window to restore
2470	HINI hIni, // in: INI file (or HINI_USER/SYSTEM)
2471	const char *pcszApp, // in: INI application name
2472	const char *pcszKey, // in: INI key name
2473	ULONG fl) // in: "fl" parameter for WinSetWindowPos
2474	{
2475	BOOL brc = FALSE;
2476	SWP swp;
2477	ULONG cbswp = sizeof(swp);
2478	ULONG fl2 = (fl & ~SWP_ZORDER);
2479
2480	if (PrfQueryProfileData(hIni, (PSZ)pcszApp, (PSZ)pcszKey, &swp, &cbswp))
2481	{
2482	ULONG ulScreenCX = WinQuerySysValue(HWND_DESKTOP, SV_CXSCREEN);
2483	ULONG ulScreenCY = WinQuerySysValue(HWND_DESKTOP, SV_CYSCREEN);
2484
2485	brc = TRUE;
2486
2487	if ((fl & SWP_SIZE) == 0)
2488	{
2489	// if no resize, we need to get the current position
2490	SWP swpNow;
2491	brc = WinQueryWindowPos(hwnd, &swpNow);
2492	swp.cx = swpNow.cx;
2493	swp.cy = swpNow.cy;
2494	}
2495
2496	if (brc)
2497	{
2498	// check for full visibility
2499	if ( (swp.x + swp.cx) > ulScreenCX)
2500	swp.x = ulScreenCX - swp.cx;
2501	if ( (swp.y + swp.cy) > ulScreenCY)
2502	swp.y = ulScreenCY - swp.cy;
2503	}
2504
2505	brc = TRUE;
2506
2507	}
2508	else
2509	{
2510	// window pos not found in INI: unset SWP_MOVE etc.
2511	WinQueryWindowPos(hwnd, &swp);
2512	fl2 &= ~(SWP_MOVE \| SWP_SIZE);
2513	}
2514
2515	WinSetWindowPos(hwnd,
2516	NULLHANDLE, // insert-behind window
2517	swp.x,
2518	swp.y,
2519	swp.cx,
2520	swp.cy,
2521	fl2); // SWP_* flags
2522
2523	return brc;
2524	}
2525
2526	/*
2527	*@@ winhAdjustControls:
2528	* helper function for dynamically adjusting a window's
2529	* controls when the window is resized.
2530	*
2531	* This is most useful with dialogs loaded from resources
2532	* which should be sizeable. Normally, when the dialog
2533	* frame is resized, the controls stick to their positions,
2534	* and for dialogs with many controls, programming the
2535	* changes can be tiresome.
2536	*
2537	* Enter this function. ;-) Basically, this takes a
2538	* static array of MPARAM's as input (plus one dynamic
2539	* storage area for the window positions).
2540	*
2541	* This function must get called in three contexts:
2542	* during WM_INITDLG, during WM_WINDOWPOSCHANGED, and
2543	* during WM_DESTROY, with varying parameters.
2544	*
2545	* In detail, there are four things you need to do to make
2546	* this work:
2547	*
2548	* 1) Set up a static array (as a global variable) of
2549	* MPARAM's, one for each control in your array.
2550	* Each MPARAM will have the control's ID and the
2551	* XAC_* flags (winh.h) how the control shall be moved.
2552	* Use MPFROM2SHORT to easily create this. Example:
2553	*
2554	+ MPARAM ampControlFlags[] =
2555	+ { MPFROM2SHORT(ID_CONTROL_1, XAC_MOVEX),
2556	+ MPFROM2SHORT(ID_CONTROL_2, XAC_SIZEY),
2557	+ ...
2558	+ }
2559	*
2560	* This can safely be declared as a global variable
2561	* because this data will only be read and never
2562	* changed by this function.
2563	*
2564	* 2) In WM_INITDLG of your dialog function, set up
2565	* an XADJUSTCTRLS structure, preferrably in your
2566	* window words (QWL_USER).
2567	*
2568	* ZERO THAT STRUCTURE (memset(&xac, 0, sizeof(XADJUSTCTRLS),
2569	* or this func will not work (because it will intialize
2570	* things on the first WM_WINDOWPOSCHANGED).
2571	*
2572	* 3) Intercept WM_WINDOWPOSCHANGED:
2573	*
2574	+ case WM_WINDOWPOSCHANGED:
2575	+ {
2576	+ // this msg is passed two SWP structs:
2577	+ // one for the old, one for the new data
2578	+ // (from PM docs)
2579	+ PSWP pswpNew = PVOIDFROMMP(mp1);
2580	+ PSWP pswpOld = pswpNew + 1;
2581	+
2582	+ // resizing?
2583	+ if (pswpNew->fl & SWP_SIZE)
2584	+ {
2585	+ PXADJUSTCTRLS pxac = ... // get it from your window words
2586	+
2587	+ winhAdjustControls(hwndDlg, // dialog
2588	+ ampControlFlags, // MPARAMs array
2589	+ sizeof(ampControlFlags) / sizeof(MPARAM),
2590	+ // items count
2591	+ pswpNew, // mp1
2592	+ pxac); // storage area
2593	+ }
2594	+ mrc = WinDefDlgProc(hwnd, msg, mp1, mp2); ...
2595	*
2596	* 4) In WM_DESTROY, call this function again with pmpFlags,
2597	* pswpNew, and pswpNew set to NULL. This will clean up the
2598	* data which has been allocated internally (pointed to from
2599	* the XADJUSTCTRLS structure).
2600	* Don't forget to free your storage for XADJUSTCTLRS
2601	* _itself_, that's the job of the caller.
2602	*
2603	* This might sound complicated, but it's a lot easier than
2604	* having to write dozens of WinSetWindowPos calls oneself.
2605	*
2606	*@@added V0.9.0 [umoeller]
2607	*@@changed V0.9.19 (2002-04-13) [umoeller]: added correlation for entry field repositioning, this was always off
2608	*/
2609
2610	BOOL winhAdjustControls(HWND hwndDlg, // in: dialog (req.)
2611	const MPARAM *pmpFlags, // in: init flags or NULL for cleanup
2612	ULONG ulCount, // in: item count (req.)
2613	PSWP pswpNew, // in: pswpNew from WM_WINDOWPOSCHANGED or NULL for cleanup
2614	PXADJUSTCTRLS pxac) // in: adjust-controls storage area (req.)
2615	{
2616	BOOL brc = FALSE;
2617	ULONG ul = 0;
2618
2619	/* if (!WinIsWindowVisible(hwndDlg))
2620	return (FALSE); */
2621
2622	if ((pmpFlags) && (pxac))
2623	{
2624	PSWP pswpThis;
2625	const MPARAM *pmpThis;
2626	LONG ldcx, ldcy;
2627	ULONG cWindows = 0;
2628
2629	// V0.9.19 (2002-04-13) [umoeller]
2630	LONG cxMarginEF = 3 * WinQuerySysValue(HWND_DESKTOP, SV_CXBORDER);
2631	LONG cyMarginEF = 3 * WinQuerySysValue(HWND_DESKTOP, SV_CYBORDER);
2632
2633	// setup mode:
2634	if (pxac->fInitialized == FALSE)
2635	{
2636	// first call: get all the SWP's
2637	WinQueryWindowPos(hwndDlg, &pxac->swpMain);
2638	// _Pmpf(("winhAdjustControls: queried main cx = %d, cy = %d",
2639	// pxac->swpMain.cx, pxac->swpMain.cy));
2640
2641	pxac->paswp = (PSWP)malloc(sizeof(SWP) * ulCount);
2642
2643	pswpThis = pxac->paswp;
2644	pmpThis = pmpFlags;
2645
2646	for (ul = 0;
2647	ul < ulCount;
2648	ul++)
2649	{
2650	HWND hwndThis;
2651	CHAR szClass[10];
2652	if (hwndThis = WinWindowFromID(hwndDlg, SHORT1FROMMP(*pmpThis)))
2653	{
2654	WinQueryWindowPos(hwndThis, pswpThis);
2655
2656	// correlate the stupid repositioning of entry fields
2657	// V0.9.19 (2002-04-13) [umoeller]
2658	if ( (WinQueryClassName(hwndThis, sizeof(szClass), szClass)
2659	&& (!strcmp(szClass, "#6"))
2660	&& (WinQueryWindowULong(hwndThis, QWL_STYLE) & ES_MARGIN))
2661	)
2662	{
2663	pswpThis->x += cxMarginEF;
2664	pswpThis->y += cyMarginEF;
2665	pswpThis->cx -= 2 * cxMarginEF;
2666	pswpThis->cy -= 2 * cyMarginEF;
2667	}
2668
2669	cWindows++;
2670	}
2671
2672	pswpThis++;
2673	pmpThis++;
2674	}
2675
2676	pxac->fInitialized = TRUE;
2677	// _Pmpf(("winhAdjustControls: queried %d controls", cWindows));
2678	}
2679
2680	if (pswpNew)
2681	{
2682	// compute width and height delta
2683	ldcx = (pswpNew->cx - pxac->swpMain.cx);
2684	ldcy = (pswpNew->cy - pxac->swpMain.cy);
2685
2686	// _Pmpf(("winhAdjustControls: new cx = %d, cy = %d",
2687	// pswpNew->cx, pswpNew->cy));
2688
2689	// now adjust the controls
2690	cWindows = 0;
2691	pswpThis = pxac->paswp;
2692	pmpThis = pmpFlags;
2693	for (ul = 0;
2694	ul < ulCount;
2695	ul++)
2696	{
2697	HWND hwndThis;
2698	if (hwndThis = WinWindowFromID(hwndDlg, SHORT1FROMMP(*pmpThis)))
2699	{
2700	LONG x = pswpThis->x,
2701	y = pswpThis->y,
2702	cx = pswpThis->cx,
2703	cy = pswpThis->cy;
2704
2705	ULONG ulSwpFlags = 0;
2706	// get flags for this control
2707	USHORT usFlags = SHORT2FROMMP(*pmpThis);
2708
2709	if (usFlags & XAC_MOVEX)
2710	{
2711	x += ldcx;
2712	ulSwpFlags \|= SWP_MOVE;
2713	}
2714	if (usFlags & XAC_MOVEY)
2715	{
2716	y += ldcy;
2717	ulSwpFlags \|= SWP_MOVE;
2718	}
2719	if (usFlags & XAC_SIZEX)
2720	{
2721	cx += ldcx;
2722	ulSwpFlags \|= SWP_SIZE;
2723	}
2724	if (usFlags & XAC_SIZEY)
2725	{
2726	cy += ldcy;
2727	ulSwpFlags \|= SWP_SIZE;
2728	}
2729
2730	if (ulSwpFlags)
2731	{
2732	WinSetWindowPos(hwndThis,
2733	NULLHANDLE, // hwndInsertBehind
2734	x, y, cx, cy,
2735	ulSwpFlags);
2736	cWindows++;
2737	brc = TRUE;
2738	}
2739	}
2740
2741	pswpThis++;
2742	pmpThis++;
2743	}
2744
2745	// _Pmpf(("winhAdjustControls: set %d windows", cWindows));
2746	}
2747	}
2748	else
2749	{
2750	// pxac == NULL:
2751	// cleanup mode
2752	if (pxac->paswp)
2753	free(pxac->paswp);
2754	}
2755
2756	return brc;
2757	}
2758
2759	/*
2760	*@@ winhCenterWindow:
2761	* centers a window within its parent window. If that's
2762	* the PM desktop, it will be centered according to the
2763	* whole screen.
2764	* For dialog boxes, use WinCenteredDlgBox as a one-shot
2765	* function.
2766	*
2767	* Note: When calling this function, the window should
2768	* not be visible to avoid flickering.
2769	* This func does not show the window either, so call
2770	* WinShowWindow afterwards.
2771	*/
2772
2773	void winhCenterWindow(HWND hwnd)
2774	{
2775	RECTL rclParent;
2776	RECTL rclWindow;
2777
2778	WinQueryWindowRect(hwnd, &rclWindow);
2779	WinQueryWindowRect(WinQueryWindow(hwnd, QW_PARENT), &rclParent);
2780
2781	rclWindow.xLeft = (rclParent.xRight - rclWindow.xRight) / 2;
2782	rclWindow.yBottom = (rclParent.yTop - rclWindow.yTop ) / 2;
2783
2784	WinSetWindowPos(hwnd, NULLHANDLE, rclWindow.xLeft, rclWindow.yBottom,
2785	0, 0, SWP_MOVE);
2786	}
2787
2788	/*
2789	*@@ winhCenteredDlgBox:
2790	* just like WinDlgBox, but the dlg box is centered on the screen;
2791	* you should mark the dlg template as not visible in the dlg
2792	* editor, or display will flicker.
2793	* As opposed to winhCenterWindow, this _does_ show the window.
2794	*/
2795
2796	ULONG winhCenteredDlgBox(HWND hwndParent,
2797	HWND hwndOwner,
2798	PFNWP pfnDlgProc,
2799	HMODULE hmod,
2800	ULONG idDlg,
2801	PVOID pCreateParams)
2802	{
2803	ULONG ulReply;
2804	HWND hwndDlg = WinLoadDlg(hwndParent,
2805	hwndOwner,
2806	pfnDlgProc,
2807	hmod,
2808	idDlg,
2809	pCreateParams);
2810	winhCenterWindow(hwndDlg);
2811	ulReply = WinProcessDlg(hwndDlg);
2812	WinDestroyWindow(hwndDlg);
2813	return ulReply;
2814	}
2815
2816	/*
2817	*@@ winhPlaceBesides:
2818	* attempts to place hwnd somewhere besides
2819	* hwndRelative.
2820	*
2821	* fl is presently ignored, but should be
2822	* PLF_SMART for future extensions.
2823	*
2824	* Works only if hwnd is a desktop child.
2825	*
2826	*@@added V0.9.19 (2002-04-17) [umoeller]
2827	*@@changed V1.0.0 (2002-08-26) [umoeller]: fixed cx and cy confusion
2828	*/
2829
2830	BOOL winhPlaceBesides(HWND hwnd,
2831	HWND hwndRelative,
2832	ULONG fl)
2833	{
2834	SWP swpRel,
2835	swpThis;
2836	LONG xNew, yNew;
2837
2838	if ( (WinQueryWindowPos(hwndRelative, &swpRel))
2839	&& (WinQueryWindowPos(hwnd, &swpThis))
2840	)
2841	{
2842	HWND hwndRelParent,
2843	hwndThisParent;
2844	POINTL ptlRel = {swpRel.x, swpRel.y};
2845	if ( (hwndRelParent = WinQueryWindow(hwndRelative, QW_PARENT))
2846	&& (hwndThisParent = WinQueryWindow(hwnd, QW_PARENT))
2847	&& (hwndRelParent != hwndThisParent)
2848	)
2849	{
2850	WinMapWindowPoints(hwndRelParent,
2851	hwndThisParent,
2852	&ptlRel,
2853	1);
2854	}
2855
2856	// place right first
2857	xNew = ptlRel.x + swpRel.cx;
2858	// center vertically
2859	yNew = ptlRel.y + ((swpRel.cy - swpThis.cy) / 2);
2860
2861	// if (xNew + swpThis.cy > WinQuerySysValue(HWND_DESKTOP, SV_CXSCREEN))
2862	// not cy, but cx V1.0.0 (2002-08-26) [umoeller]
2863	if (xNew + swpThis.cx > G_cxScreen)
2864	{
2865	// place left then
2866	xNew = ptlRel.x - swpThis.cx;
2867
2868	if (xNew < 0)
2869	{
2870	// center then
2871	winhCenterWindow(hwnd);
2872	return TRUE;
2873	}
2874	}
2875
2876	return WinSetWindowPos(hwnd,
2877	0,
2878	xNew,
2879	yNew,
2880	0,
2881	0,
2882	SWP_MOVE);
2883	}
2884
2885	return FALSE;
2886	}
2887
2888	/*
2889	*@@ winhFindWindowBelow:
2890	* finds the window with the same parent
2891	* which sits right below hwndFind in the
2892	* window Z-order.
2893	*
2894	*@@added V0.9.7 (2000-12-04) [umoeller]
2895	*/
2896
2897	HWND winhFindWindowBelow(HWND hwndFind)
2898	{
2899	HWND hwnd = NULLHANDLE,
2900	hwndParent = WinQueryWindow(hwndFind, QW_PARENT);
2901
2902	if (hwndParent)
2903	{
2904	HENUM henum = WinBeginEnumWindows(hwndParent);
2905	HWND hwndThis;
2906	while (hwndThis = WinGetNextWindow(henum))
2907	{
2908	SWP swp;
2909	WinQueryWindowPos(hwndThis, &swp);
2910	if (swp.hwndInsertBehind == hwndFind)
2911	{
2912	hwnd = hwndThis;
2913	break;
2914	}
2915	}
2916	WinEndEnumWindows(henum);
2917	}
2918
2919	return hwnd;
2920	}
2921
2922	/*
2923	*@@category: Helpers\PM helpers\Presentation parameters
2924	*/
2925
2926	/* ******************************************************************
2927	*
2928	* Presparams helpers
2929	*
2930	********************************************************************/
2931
2932	/*
2933	*@@ winhQueryWindowFont:
2934	* returns the window font presentation parameter
2935	* in a newly allocated buffer.
2936	*
2937	* Returns NULL on error. Use free()
2938	* to free the return value.
2939	*
2940	*@@added V0.9.1 (2000-02-14) [umoeller]
2941	*/
2942
2943	PSZ winhQueryWindowFont(HWND hwnd)
2944	{
2945	CHAR szNewFont[100] = "";
2946	WinQueryPresParam(hwnd,
2947	PP_FONTNAMESIZE,
2948	0,
2949	NULL,
2950	(ULONG)sizeof(szNewFont),
2951	(PVOID)&szNewFont,
2952	QPF_NOINHERIT);
2953	if (szNewFont[0] != 0)
2954	return strdup(szNewFont);
2955
2956	return NULL;
2957	}
2958
2959	/*
2960	*@@ winhQueryDefaultFont:
2961	*
2962	*@@added V1.0.1 (2002-11-30) [umoeller]
2963	*/
2964
2965	PCSZ winhQueryDefaultFont(VOID)
2966	{
2967	if (doshIsWarp4())
2968	return "9.WarpSans";
2969
2970	return "8.Helv";
2971	}
2972
2973	/*
2974	*@@ winhSetWindowFont:
2975	* this sets a window's font by invoking
2976	* WinSetPresParam on it.
2977	*
2978	* If (pszFont == NULL), a default font will be set
2979	* (on Warp 4, "9.WarpSans", on Warp 3, "8.Helv").
2980	*
2981	* winh.h also defines the winhSetDlgItemFont macro.
2982	*
2983	* Returns TRUE if successful or FALSE otherwise.
2984	*
2985	*@@added V0.9.0 [umoeller]
2986	*@@changed V1.0.1 (2002-11-30) [umoeller]: optimized
2987	*/
2988
2989	BOOL winhSetWindowFont(HWND hwnd,
2990	const char *pcszFont)
2991	{
2992	if (!pcszFont)
2993	pcszFont = winhQueryDefaultFont();
2994
2995	return WinSetPresParam(hwnd,
2996	PP_FONTNAMESIZE,
2997	strlen(pcszFont) + 1,
2998	(PSZ)pcszFont);
2999	}
3000
3001	/*
3002	*@@ winhSetControlsFont:
3003	* this sets the font for all the controls of hwndDlg
3004	* which have a control ID in the range of usIDMin to
3005	* usIDMax. "Unused" IDs (i.e. -1) will also be set.
3006	*
3007	* If (pszFont == NULL), a default font will be set
3008	* (on Warp 4, "9.WarpSans", on Warp 3, "8.Helv").
3009	*
3010	* Returns the no. of controls set.
3011	*
3012	*@@added V0.9.0 [umoeller]
3013	*/
3014
3015	ULONG winhSetControlsFont(HWND hwndDlg, // in: dlg to set
3016	SHORT usIDMin, // in: minimum control ID to be set (inclusive)
3017	SHORT usIDMax, // in: maximum control ID to be set (inclusive)
3018	const char *pcszFont) // in: font to use (e.g. "9.WarpSans") or NULL
3019	{
3020	ULONG ulrc = 0;
3021	HENUM henum;
3022	HWND hwndItem;
3023	CHAR szFont[256];
3024	ULONG cbFont;
3025
3026	if (pcszFont == NULL)
3027	{
3028	if (doshIsWarp4())
3029	strhncpy0(szFont, "9.WarpSans", sizeof(szFont));
3030	else
3031	strhncpy0(szFont, "8.Helv", sizeof(szFont));
3032	}
3033	else
3034	strhncpy0(szFont, pcszFont, sizeof(szFont));
3035
3036	cbFont = strlen(szFont) + 1;
3037
3038	// set font for all the dialog controls
3039	henum = WinBeginEnumWindows(hwndDlg);
3040	while ((hwndItem = WinGetNextWindow(henum)))
3041	{
3042	SHORT sID = WinQueryWindowUShort(hwndItem, QWS_ID);
3043	if ( (sID == -1)
3044	\|\| ((sID >= usIDMin) && (sID <= usIDMax))
3045	)
3046	if (WinSetPresParam(hwndItem,
3047	PP_FONTNAMESIZE,
3048	cbFont,
3049	szFont))
3050	// successful:
3051	ulrc++;
3052	}
3053	WinEndEnumWindows(henum);
3054
3055	return ulrc;
3056	}
3057
3058	/*
3059	*@@ winhStorePresParam:
3060	* this appends a new presentation parameter to an
3061	* array of presentation parameters which can be
3062	* passed to WinCreateWindow. This is preferred
3063	* over setting the presparams using WinSetPresParams,
3064	* because that call will cause a lot of messages.
3065	*
3066	* On the first call, pppp _must_ be NULL. This
3067	* will allocate memory for storing the given
3068	* data as necessary and modify *pppp to point
3069	* to the new array.
3070	*
3071	* On subsequent calls with the same pppp, memory
3072	* will be reallocated, the old data will be copied,
3073	* and the new given data will be appended.
3074	*
3075	* Use free() on your PPRESPARAMS pointer (whose
3076	* address was passed) after WinCreateWindow.
3077	*
3078	* See winhQueryPresColor for typical presparams
3079	* used in OS/2.
3080	*
3081	* Example:
3082	*
3083	+ PPRESPARAMS ppp = NULL;
3084	+ CHAR szFont[] = "9.WarpSans";
3085	+ LONG lColor = CLR_WHITE;
3086	+ winhStorePresParam(&ppp, PP_FONTNAMESIZE, sizeof(szFont), szFont);
3087	+ winhStorePresParam(&ppp, PP_BACKGROUNDCOLOR, sizeof(lColor), &lColor);
3088	+ WinCreateWindow(...., ppp);
3089	+ free(ppp);
3090	*
3091	*@@added V0.9.0 [umoeller]
3092	*/
3093
3094	BOOL winhStorePresParam(PPRESPARAMS *pppp, // in: data pointer (modified)
3095	ULONG ulAttrType, // in: PP_* index
3096	ULONG cbData, // in: sizeof(*pData), e.g. sizeof(LONG)
3097	PVOID pData) // in: presparam data (e.g. a PLONG to a color)
3098	{
3099	BOOL brc = FALSE;
3100	if (pppp)
3101	{
3102	ULONG cbOld = 0,
3103	cbNew;
3104	PBYTE pbTemp = 0;
3105	PPRESPARAMS pppTemp = 0;
3106	PPARAM pppCopyTo = 0;
3107
3108	if (*pppp != NULL)
3109	// subsequent calls:
3110	cbOld = (**pppp).cb;
3111
3112	cbNew = sizeof(ULONG) // PRESPARAMS.cb
3113	+ cbOld // old count, which does not include PRESPARAMS.cb
3114	+ sizeof(ULONG) // PRESPARAMS.aparam[0].id
3115	+ sizeof(ULONG) // PRESPARAMS.aparam[0].cb
3116	+ cbData; // PRESPARAMS.aparam[0].ab[]
3117
3118	pbTemp = (PBYTE)malloc(cbNew);
3119	if (pbTemp)
3120	{
3121	pppTemp = (PPRESPARAMS)pbTemp;
3122
3123	if (*pppp != NULL)
3124	{
3125	// copy old data
3126	memcpy(pbTemp, *pppp, cbOld + sizeof(ULONG)); // including PRESPARAMS.cb
3127	pppCopyTo = (PPARAM)(pbTemp // new buffer
3128	+ sizeof(ULONG) // skipping PRESPARAMS.cb
3129	+ cbOld); // old PARAM array
3130	}
3131	else
3132	// first call:
3133	pppCopyTo = pppTemp->aparam;
3134
3135	pppTemp->cb = cbNew - sizeof(ULONG); // excluding PRESPARAMS.cb
3136	pppCopyTo->id = ulAttrType;
3137	pppCopyTo->cb = cbData; // byte count of PARAM.ab[]
3138	memcpy(pppCopyTo->ab, pData, cbData);
3139
3140	free(*pppp);
3141	*pppp = pppTemp;
3142
3143	brc = TRUE;
3144	}
3145	}
3146
3147	return brc;
3148	}
3149
3150	/*
3151	*@@ winhCreateDefaultPresparams:
3152	*
3153	* Caller must free() the return value.
3154	*
3155	*@@added V1.0.1 (2002-11-30) [umoeller]
3156	*/
3157
3158	PPRESPARAMS winhCreateDefaultPresparams(VOID)
3159	{
3160	PPRESPARAMS ppp = NULL;
3161
3162	PCSZ pcszFont = winhQueryDefaultFont();
3163	LONG lColor;
3164
3165	winhStorePresParam(&ppp,
3166	PP_FONTNAMESIZE,
3167	strlen(pcszFont) + 1,
3168	(PVOID)pcszFont);
3169
3170	lColor = WinQuerySysColor(HWND_DESKTOP,
3171	SYSCLR_DIALOGBACKGROUND,
3172	0);
3173	winhStorePresParam(&ppp,
3174	PP_BACKGROUNDCOLOR,
3175	sizeof(lColor),
3176	&lColor);
3177
3178	lColor = RGBCOL_BLACK;
3179	winhStorePresParam(&ppp,
3180	PP_FOREGROUNDCOLOR,
3181	sizeof(lColor),
3182	&lColor);
3183
3184	return ppp;
3185	}
3186
3187	/*
3188	*@@ winhQueryPresColor2:
3189	* returns the specified color. This is queried in the
3190	* following order:
3191	*
3192	* 1) hwnd's pres params are searched for ulPP
3193	* (which should be a PP_* index);
3194	* 2) if (fInherit == TRUE), the parent windows
3195	* are searched also;
3196	* 3) if this fails or (fInherit == FALSE), WinQuerySysColor
3197	* is called to get lSysColor (which should be a SYSCLR_*
3198	* index), if lSysColor != -1;
3199	* 4) if (lSysColor == -1), -1 is returned.
3200	*
3201	* The return value is always an RGB LONG, _not_ a color index.
3202	* This is even true for the returned system colors, which are
3203	* converted to RGB.
3204	*
3205	* If you do any painting with this value, you should switch
3206	* the HPS you're using to RGB mode (use gpihSwitchToRGB for that).
3207	*
3208	* Some useful ulPP / lSysColor pairs
3209	* (default values as in PMREF):
3210	*
3211	+ -- PP_FOREGROUNDCOLOR SYSCLR_WINDOWTEXT (for most controls also)
3212	+ SYSCLR_WINDOWSTATICTEXT (for static controls)
3213	+ Foreground color (default: black)
3214	+ -- PP_BACKGROUNDCOLOR SYSCLR_BACKGROUND
3215	+ SYSCLR_DIALOGBACKGROUND
3216	+ SYSCLR_FIELDBACKGROUND (for disabled scrollbars)
3217	+ SYSCLR_WINDOW (application surface -- empty clients)
3218	+ Background color (default: light gray)
3219	+ -- PP_ACTIVETEXTFGNDCOLOR
3220	+ -- PP_HILITEFOREGROUNDCOLOR SYSCLR_HILITEFOREGROUND
3221	+ Highlighted foreground color, for example for selected menu
3222	+ (def.: white)
3223	+ -- PP_ACTIVETEXTBGNDCOLOR
3224	+ -- PP_HILITEBACKGROUNDCOLOR SYSCLR_HILITEBACKGROUND
3225	+ Highlighted background color (def.: dark gray)
3226	+ -- PP_INACTIVETEXTFGNDCOLOR
3227	+ -- PP_DISABLEDFOREGROUNDCOLOR SYSCLR_MENUDISABLEDTEXT
3228	+ Disabled foreground color (dark gray)
3229	+ -- PP_INACTIVETEXTBGNDCOLOR
3230	+ -- PP_DISABLEDBACKGROUNDCOLOR
3231	+ Disabled background color
3232	+ -- PP_BORDERCOLOR SYSCLR_WINDOWFRAME
3233	+ SYSCLR_INACTIVEBORDER
3234	+ Border color (around pushbuttons, in addition to
3235	+ the 3D colors)
3236	+ -- PP_ACTIVECOLOR SYSCLR_ACTIVETITLE
3237	+ Active color
3238	+ -- PP_INACTIVECOLOR SYSCLR_INACTIVETITLE
3239	+ Inactive color
3240	*
3241	* For menus:
3242	+ -- PP_MENUBACKGROUNDCOLOR SYSCLR_MENU
3243	+ -- PP_MENUFOREGROUNDCOLOR SYSCLR_MENUTEXT
3244	+ -- PP_MENUHILITEBGNDCOLOR SYSCLR_MENUHILITEBGND
3245	+ -- PP_MENUHILITEFGNDCOLOR SYSCLR_MENUHILITE
3246	+ -- ?? SYSCLR_MENUDISABLEDTEXT
3247	+
3248	* For containers (according to the API ref. at EDM/2):
3249	+ -- PP_FOREGROUNDCOLOR SYSCLR_WINDOWTEXT
3250	+ -- PP_BACKGROUNDCOLOR SYSCLR_WINDOW
3251	+ -- PP_HILITEFOREGROUNDCOLOR SYSCLR_HILITEFOREGROUND
3252	+ -- PP_HILITEBACKGROUNDCOLOR SYSCLR_HILITEBACKGROUND
3253	+ -- PP_BORDERCOLOR
3254	+ (used for separator lines, eg. in Details view)
3255	+ -- PP_ICONTEXTBACKGROUNDCOLOR
3256	+ (column titles in Details view?!?)
3257	+
3258	* For listboxes / entryfields / MLE's:
3259	+ -- PP_BACKGROUNDCOLOR SYSCLR_ENTRYFIELD
3260	*
3261	* PMREF has more of these.
3262	*
3263	@@changed V0.9.0 [umoeller]: removed INI key query, using SYSCLR_ instead; function prototype changed
3264	*@@changed V0.9.0 [umoeller]: added fInherit parameter
3265	*@@changed V0.9.7 (2000-12-02) [umoeller]: added lSysColor == -1 support
3266	*@@changed V0.9.20 (2002-08-04) [umoeller]: added ulPPIndex, renamed func
3267	*/
3268
3269	LONG winhQueryPresColor2(HWND hwnd, // in: window to query
3270	ULONG ulppRGB, // in: PP_* index for RGB color
3271	ULONG ulppIndex, // in: PP_* index for color _index_ (can be null)
3272	BOOL fInherit, // in: search parent windows too?
3273	LONG lSysColor) // in: SYSCLR_* index or -1
3274	{
3275	ULONG ul,
3276	attrFound;
3277	LONG lColorFound;
3278
3279	if (ulppRGB != (ULONG)-1)
3280	{
3281	ULONG fl = 0;
3282	if (!fInherit)
3283	fl = QPF_NOINHERIT;
3284	if (ulppIndex)
3285	fl \|= QPF_ID2COLORINDEX; // convert indexed color 2 to RGB V0.9.20 (2002-08-04) [umoeller]
3286
3287	if ((ul = WinQueryPresParam(hwnd,
3288	ulppRGB,
3289	ulppIndex,
3290	&attrFound,
3291	sizeof(lColorFound),
3292	&lColorFound,
3293	fl)))
3294	return lColorFound;
3295	}
3296
3297	// not found: get system color
3298	if (lSysColor != -1)
3299	return WinQuerySysColor(HWND_DESKTOP, lSysColor, 0);
3300
3301	return -1;
3302	}
3303
3304	/*
3305	*@@ winhQueryPresColor:
3306	* compatibility function because this one was
3307	* exported.
3308	*
3309	*@@added V0.9.20 (2002-08-04) [umoeller]
3310	*/
3311
3312	LONG XWPENTRY winhQueryPresColor(HWND hwnd,
3313	ULONG ulPP,
3314	BOOL fInherit,
3315	LONG lSysColor)
3316	{
3317	return winhQueryPresColor2(hwnd,
3318	ulPP,
3319	0,
3320	fInherit,
3321	lSysColor);
3322	}
3323
3324	/*
3325	*@@ winhSetPresColor:
3326	* sets a color presparam. ulIndex specifies
3327	* the presparam to be set and would normally
3328	* be either PP_BACKGROUNDCOLOR or PP_FOREGROUNDCOLOR.
3329	*
3330	*@@added V0.9.16 (2001-10-15) [umoeller]
3331	*/
3332
3333	BOOL winhSetPresColor(HWND hwnd,
3334	ULONG ulIndex,
3335	LONG lColor)
3336	{
3337	return WinSetPresParam(hwnd,
3338	ulIndex,
3339	sizeof(LONG),
3340	&lColor);
3341	}
3342
3343	/*
3344	*@@category: Helpers\PM helpers\Help (IPF)
3345	*/
3346
3347	/* ******************************************************************
3348	*
3349	* Help instance helpers
3350	*
3351	********************************************************************/
3352
3353	/*
3354	*@@ winhCreateHelp:
3355	* creates a help instance and connects it with the
3356	* given frame window.
3357	*
3358	* If (pszFileName == NULL), we'll retrieve the
3359	* executable's fully qualified file name and
3360	* replace the extension with .HLP simply. This
3361	* avoids the typical "Help not found" errors if
3362	* the program isn't started in its own directory.
3363	*
3364	* If you have created a help table in memory, specify it
3365	* with pHelpTable. To load a help table from the resources,
3366	* specify hmod (or NULLHANDLE) and set pHelpTable to the
3367	* following:
3368	+
3369	+ (PHELPTABLE)MAKELONG(usTableID, 0xffff)
3370	*
3371	* Returns the help window handle or NULLHANDLE on errors.
3372	*
3373	* Based on an EDM/2 code snippet.
3374	*
3375	*@@added V0.9.4 (2000-07-03) [umoeller]
3376	*/
3377
3378	HWND winhCreateHelp(HWND hwndFrame, // in: app's frame window handle; can be NULLHANDLE
3379	const char *pcszFileName, // in: help file name or NULL
3380	HMODULE hmod, // in: module with help table or NULLHANDLE (current)
3381	PHELPTABLE pHelpTable, // in: help table or resource ID
3382	const char *pcszWindowTitle) // in: help window title or NULL
3383	{
3384	HELPINIT hi;
3385	PSZ pszExt;
3386	CHAR szName[CCHMAXPATH];
3387	HWND hwndHelp;
3388
3389	if (pcszFileName == NULL)
3390	{
3391	PPIB ppib;
3392	PTIB ptib;
3393	DosGetInfoBlocks(&ptib, &ppib);
3394	DosQueryModuleName(ppib->pib_hmte, sizeof(szName), szName);
3395
3396	pszExt = strrchr(szName, '.');
3397	if (pszExt)
3398	strcpy(pszExt, ".hlp");
3399	else
3400	strcat(szName, ".hlp");
3401
3402	pcszFileName = szName;
3403	}
3404
3405	hi.cb = sizeof(HELPINIT);
3406	hi.ulReturnCode = 0;
3407	hi.pszTutorialName = NULL;
3408	hi.phtHelpTable = pHelpTable;
3409	hi.hmodHelpTableModule = hmod;
3410	hi.hmodAccelActionBarModule = NULLHANDLE;
3411	hi.idAccelTable = 0;
3412	hi.idActionBar = 0;
3413	hi.pszHelpWindowTitle = (PSZ)pcszWindowTitle;
3414	hi.fShowPanelId = CMIC_HIDE_PANEL_ID;
3415	hi.pszHelpLibraryName = (PSZ)pcszFileName;
3416
3417	hwndHelp = WinCreateHelpInstance(WinQueryAnchorBlock(hwndFrame),
3418	&hi);
3419	if ((hwndFrame) && (hwndHelp))
3420	{
3421	WinAssociateHelpInstance(hwndHelp, hwndFrame);
3422	}
3423
3424	return hwndHelp;
3425	}
3426
3427	/*
3428	*@@ winhDisplayHelpPanel:
3429	* displays the specified help panel ID.
3430	*
3431	* If (ulHelpPanel == 0), this displays the
3432	* standard OS/2 "Using help" panel.
3433	*
3434	* Returns zero on success or one of the
3435	* help manager error codes on failure.
3436	* See HM_ERROR for those.
3437	*
3438	*@@added V0.9.7 (2001-01-21) [umoeller]
3439	*/
3440
3441	ULONG winhDisplayHelpPanel(HWND hwndHelpInstance, // in: from winhCreateHelp
3442	ULONG ulHelpPanel) // in: help panel ID
3443	{
3444	return (ULONG)WinSendMsg(hwndHelpInstance,
3445	HM_DISPLAY_HELP,
3446	(MPARAM)ulHelpPanel,
3447	(MPARAM)( (ulHelpPanel != 0)
3448	? HM_RESOURCEID
3449	: 0));
3450	}
3451
3452	/*
3453	*@@ winhDestroyHelp:
3454	* destroys the help instance created by winhCreateHelp.
3455	*
3456	* Based on an EDM/2 code snippet.
3457	*
3458	*@@added V0.9.4 (2000-07-03) [umoeller]
3459	*/
3460
3461	void winhDestroyHelp(HWND hwndHelp,
3462	HWND hwndFrame) // can be NULLHANDLE if not used with winhCreateHelp
3463	{
3464	if (hwndHelp)
3465	{
3466	if (hwndFrame)
3467	WinAssociateHelpInstance(NULLHANDLE, hwndFrame);
3468	WinDestroyHelpInstance(hwndHelp);
3469	}
3470	}
3471
3472	/*
3473	*@@category: Helpers\PM helpers\Application control
3474	*/
3475
3476	/* ******************************************************************
3477	*
3478	* Application control
3479	*
3480	********************************************************************/
3481
3482	/*
3483	*@@ winhAnotherInstance:
3484	* this tests whether another instance of the same
3485	* application is already running.
3486	*
3487	* To identify instances of the same application, the
3488	* application must call this function during startup
3489	* with the unique name of an OS/2 semaphore. As with
3490	* all OS/2 semaphores, the semaphore name must begin
3491	* with "\\SEM32\\". The semaphore isn't really used
3492	* except for testing for its existence, since that
3493	* name is unique among all processes.
3494	*
3495	* If another instance is found, TRUE is returned. If
3496	* (fSwitch == TRUE), that instance is switched to,
3497	* using the tasklist.
3498	*
3499	* If no other instance is found, FALSE is returned only.
3500	*
3501	* Based on an EDM/2 code snippet.
3502	*
3503	*@@added V0.9.0 (99-10-22) [umoeller]
3504	*/
3505
3506	BOOL winhAnotherInstance(const char *pcszSemName, // in: semaphore ID
3507	BOOL fSwitch) // in: if TRUE, switch to first instance if running
3508	{
3509	HMTX hmtx;
3510
3511	if (DosCreateMutexSem((PSZ)pcszSemName,
3512	&hmtx,
3513	DC_SEM_SHARED,
3514	TRUE)
3515	== NO_ERROR)
3516	// semapore created: this doesn't happen if the semaphore
3517	// exists already, so no other instance is running
3518	return FALSE;
3519
3520	// else: instance running
3521	hmtx = NULLHANDLE;
3522
3523	// switch to other instance?
3524	if (fSwitch)
3525	{
3526	// yes: query mutex creator
3527	if (DosOpenMutexSem((PSZ)pcszSemName,
3528	&hmtx)
3529	== NO_ERROR)
3530	{
3531	PID pid = 0;
3532	TID tid = 0; // unused
3533	ULONG ulCount; // unused
3534
3535	if (DosQueryMutexSem(hmtx, &pid, &tid, &ulCount) == NO_ERROR)
3536	{
3537	HSWITCH hswitch = WinQuerySwitchHandle(NULLHANDLE, pid);
3538	if (hswitch != NULLHANDLE)
3539	WinSwitchToProgram(hswitch);
3540	}
3541
3542	DosCloseMutexSem(hmtx);
3543	}
3544	}
3545
3546	return TRUE; // another instance exists
3547	}
3548
3549	/*
3550	*@@ winhAddToTasklist:
3551	* this adds the specified window to the tasklist
3552	* with hIcon as its program icon (which is also
3553	* set for the main window). This is useful for
3554	* the old "dialog as main window" trick.
3555	*
3556	* Returns the HSWITCH of the added entry.
3557	*/
3558
3559	HSWITCH winhAddToTasklist(HWND hwnd, // in: window to add
3560	HPOINTER hIcon) // in: icon for main window
3561	{
3562	SWCNTRL swctl;
3563	HSWITCH hswitch = 0;
3564	swctl.hwnd = hwnd; // window handle
3565	swctl.hwndIcon = hIcon; // icon handle
3566	swctl.hprog = NULLHANDLE; // program handle (use default)
3567	WinQueryWindowProcess(hwnd, &(swctl.idProcess), NULL);
3568	// process identifier
3569	swctl.idSession = 0; // session identifier ?
3570	swctl.uchVisibility = SWL_VISIBLE; // visibility
3571	swctl.fbJump = SWL_JUMPABLE; // jump indicator
3572	// get window title from window titlebar
3573	if (hwnd)
3574	WinQueryWindowText(hwnd, sizeof(swctl.szSwtitle), swctl.szSwtitle);
3575	swctl.bProgType = PROG_DEFAULT; // program type
3576	hswitch = WinAddSwitchEntry(&swctl);
3577
3578	// give the main window the icon
3579	if ((hwnd) && (hIcon))
3580	WinSendMsg(hwnd,
3581	WM_SETICON,
3582	(MPARAM)hIcon,
3583	NULL);
3584
3585	return hswitch;
3586	}
3587
3588	/*
3589	*@@category: Helpers\PM helpers\Miscellaneous
3590	*/
3591
3592	/* ******************************************************************
3593	*
3594	* Miscellaneous
3595	*
3596	********************************************************************/
3597
3598	/*
3599	*@@ winhFree:
3600	* frees a block of memory allocated by the
3601	* winh* functions.
3602	*
3603	* Since the winh* functions use malloc(),
3604	* you can also use free() directly on such
3605	* blocks. However, you must use winhFree
3606	* if the winh* functions are in a module
3607	* with a different C runtime.
3608	*
3609	*@@added V0.9.7 (2000-12-06) [umoeller]
3610	*/
3611
3612	VOID winhFree(PVOID p)
3613	{
3614	if (p)
3615	free(p);
3616	}
3617
3618	/*
3619	*@@ winhSleep:
3620	* sleeps at least the specified amount of time,
3621	* without blocking the message queue.
3622	*
3623	* NOTE: This function is a bit expensive because
3624	* it creates a temporary object window. If you
3625	* need to sleep several times, you should rather
3626	* use a private timer.
3627	*
3628	*@@added V0.9.4 (2000-07-11) [umoeller]
3629	*@@changed V0.9.9 (2001-03-11) [umoeller]: rewritten
3630	*/
3631
3632	VOID winhSleep(ULONG ulSleep) // in: sleep time in milliseconds
3633	{
3634	HWND hwnd;
3635
3636	if (hwnd = winhCreateObjectWindow(WC_STATIC, NULL))
3637	{
3638	QMSG qmsg;
3639	HAB hab;
3640
3641	if ( (hab = WinQueryAnchorBlock(hwnd))
3642	&& (WinStartTimer(hab,
3643	hwnd,
3644	1,
3645	ulSleep))
3646	)
3647	{
3648	while (WinGetMsg(hab, &qmsg, NULLHANDLE, 0, 0))
3649	{
3650	if ( (qmsg.hwnd == hwnd)
3651	&& (qmsg.msg == WM_TIMER)
3652	&& (qmsg.mp1 == (MPARAM)1) // timer ID
3653	)
3654	break;
3655
3656	WinDispatchMsg(hab, &qmsg);
3657	}
3658	WinStopTimer(hab,
3659	hwnd,
3660	1);
3661	}
3662	else
3663	// timer creation failed:
3664	DosSleep(ulSleep);
3665
3666	WinDestroyWindow(hwnd);
3667	}
3668	else
3669	DosSleep(ulSleep);
3670	}
3671
3672	/*
3673	*@@ winhFileDlg:
3674	* one-short function for opening an "Open" file
3675	* dialog.
3676	*
3677	* On input, pszFile specifies the directory and
3678	* file specification (e.g. "F:\*.txt").
3679	*
3680	* Returns TRUE if the user pressed OK. In that
3681	* case, the fully qualified filename is written
3682	* into pszFile again.
3683	*
3684	* Returns FALSE if the user pressed Cancel.
3685	*
3686	* Notes about flFlags:
3687	*
3688	* -- WINH_FOD_SAVEDLG: display a "Save As" dialog.
3689	* Otherwise an "Open" dialog is displayed.
3690	*
3691	* -- WINH_FOD_INILOADDIR: load a directory from the
3692	* specified INI key and switch the dlg to it.
3693	* In that case, on input, pszFile must only
3694	* contain the file filter without any path
3695	* specification, because that is loaded from
3696	* the INI key. If the INI key does not exist,
3697	* the current process directory will be used.
3698	*
3699	* -- WINH_FOD_INISAVEDIR: if the user presses OK,
3700	* the directory of the selected file is written
3701	* to the specified INI key so that it can be
3702	* reused later. This flag is independent of
3703	* WINH_FOD_INISAVEDIR: you can specify none,
3704	* one, or both of them.
3705	*
3706	*@@added V0.9.3 (2000-04-29) [umoeller]
3707	*@@changed V0.9.12 (2001-05-21) [umoeller]: this failed if INI data had root dir, fixed
3708	*/
3709
3710	BOOL winhFileDlg(HWND hwndOwner, // in: owner for file dlg
3711	PSZ pszFile, // in: file mask; out: fully q'd filename
3712	// (should be CCHMAXPATH in size)
3713	ULONG flFlags, // in: any combination of the following:
3714	// -- WINH_FOD_SAVEDLG: save dlg; else open dlg
3715	// -- WINH_FOD_INILOADDIR: load FOD path from INI
3716	// -- WINH_FOD_INISAVEDIR: store FOD path to INI on OK
3717	HINI hini, // in: INI file to load/store last path from (can be HINI_USER)
3718	const char *pcszApplication, // in: INI application to load/store last path from
3719	const char *pcszKey) // in: INI key to load/store last path from
3720	{
3721	FILEDLG fd;
3722	FILESTATUS3 fs3;
3723
3724	memset(&fd, 0, sizeof(FILEDLG));
3725	fd.cbSize = sizeof(FILEDLG);
3726	fd.fl = FDS_CENTER;
3727
3728	if (flFlags & WINH_FOD_SAVEDLG)
3729	fd.fl \|= FDS_SAVEAS_DIALOG;
3730	else
3731	fd.fl \|= FDS_OPEN_DIALOG;
3732
3733	if ( (hini)
3734	&& (flFlags & WINH_FOD_INILOADDIR)
3735	&& (PrfQueryProfileString(hini,
3736	(PSZ)pcszApplication,
3737	(PSZ)pcszKey,
3738	"", // default string V0.9.9 (2001-02-10) [umoeller]
3739	fd.szFullFile,
3740	sizeof(fd.szFullFile)-10)
3741	> 2)
3742	// added these checks V0.9.12 (2001-05-21) [umoeller]
3743	&& (!DosQueryPathInfo(fd.szFullFile,
3744	FIL_STANDARD,
3745	&fs3,
3746	sizeof(fs3)))
3747	&& (fs3.attrFile & FILE_DIRECTORY)
3748	)
3749	{
3750	// found: append "\*"
3751	strcat(fd.szFullFile, "\\");
3752	strcat(fd.szFullFile, pszFile);
3753	}
3754	else
3755	// default: copy pszFile
3756	strcpy(fd.szFullFile, pszFile);
3757	// fixed V0.9.12 (2001-05-21) [umoeller]
3758
3759	if ( WinFileDlg(HWND_DESKTOP, // parent
3760	hwndOwner, // owner
3761	&fd)
3762	&& (fd.lReturn == DID_OK)
3763	)
3764	{
3765	// save path back?
3766	if ( (hini)
3767	&& (flFlags & WINH_FOD_INISAVEDIR)
3768	)
3769	{
3770	// get the directory that was used
3771	PSZ p = strrchr(fd.szFullFile, '\\');
3772	if (p)
3773	{
3774	// contains directory:
3775	// copy to OS2.INI
3776	PSZ pszDir = strhSubstr(fd.szFullFile, p);
3777	if (pszDir)
3778	{
3779	PrfWriteProfileString(hini,
3780	(PSZ)pcszApplication,
3781	(PSZ)pcszKey,
3782	pszDir);
3783	free(pszDir);
3784	}
3785	}
3786	}
3787
3788	strcpy(pszFile, fd.szFullFile);
3789
3790	return TRUE;
3791	}
3792
3793	return FALSE;
3794	}
3795
3796	/*
3797	*@@ winhQueryWaitPointer:
3798	* shortcut for getting the system "wait" pointer.
3799	*
3800	*@@added V1.0.1 (2002-11-30) [umoeller]
3801	*/
3802
3803	HPOINTER winhQueryWaitPointer(VOID)
3804	{
3805	return WinQuerySysPointer(HWND_DESKTOP,
3806	SPTR_WAIT,
3807	FALSE); // no copy
3808	}
3809
3810	/*
3811	*@@ winhSetWaitPointer:
3812	* this sets the mouse pointer to "Wait".
3813	* Returns the previous pointer (HPOINTER),
3814	* which should be stored somewhere to be
3815	* restored later. Example:
3816	+ HPOINTER hptrOld = winhSetWaitPointer();
3817	+ ...
3818	+ WinSetPointer(HWND_DESKTOP, hptrOld);
3819	*/
3820
3821	HPOINTER winhSetWaitPointer(VOID)
3822	{
3823	HPOINTER hptr = WinQueryPointer(HWND_DESKTOP);
3824	WinSetPointer(HWND_DESKTOP,
3825	winhQueryWaitPointer());
3826	return hptr;
3827	}
3828
3829	/*
3830	*@@ winhQueryWindowText:
3831	* this returns the window text of the specified
3832	* HWND in a newly allocated buffer.
3833	*
3834	* Returns NULL on error. Use free()
3835	* to free the return value.
3836	*/
3837
3838	PSZ winhQueryWindowText(HWND hwnd)
3839	{
3840	PSZ pszText = NULL;
3841	ULONG cbText;
3842	if (cbText = WinQueryWindowTextLength(hwnd))
3843	{
3844	if (pszText = (PSZ)malloc(cbText + 1)) // additional null character
3845	WinQueryWindowText(hwnd,
3846	cbText + 1,
3847	pszText);
3848	}
3849
3850	return pszText;
3851	}
3852
3853	/*
3854	*@@ winhSetWindowText:
3855	* like WinSetWindowText, but this one accepts
3856	* printf-like arguments.
3857	*
3858	* Note that the total string is limited to
3859	* 1000 characters.
3860	*
3861	*@@added V0.9.16 (2001-10-08) [umoeller]
3862	*/
3863
3864	BOOL winhSetWindowText(HWND hwnd,
3865	const char *pcszFormat,
3866	...)
3867	{
3868	CHAR szBuf[1000];
3869	va_list args;
3870	int i;
3871	va_start(args, pcszFormat);
3872	i = vsprintf(szBuf, pcszFormat, args);
3873	va_end(args);
3874
3875	return WinSetWindowText(hwnd,
3876	szBuf);
3877	}
3878
3879	/*
3880	*@@ winhReplaceWindowText:
3881	* this is a combination of winhQueryWindowText
3882	* and strhFindReplace to replace substrings in a window.
3883	*
3884	* This is useful for filling in placeholders
3885	* a la "%1" in control windows, e.g. static
3886	* texts.
3887	*
3888	* This replaces only the first occurence of
3889	* pszSearch.
3890	*
3891	* Returns TRUE only if the window exists and
3892	* the search string was replaced.
3893	*
3894	*@@added V0.9.0 [umoeller]
3895	*/
3896
3897	BOOL winhReplaceWindowText(HWND hwnd, // in: window whose text is to be modified
3898	const char *pcszSearch, // in: search string (e.g. "%1")
3899	const char *pcszReplaceWith) // in: replacement string for pszSearch
3900	{
3901	BOOL brc = FALSE;
3902	PSZ pszText;
3903
3904	if (pszText = winhQueryWindowText(hwnd))
3905	{
3906	ULONG ulOfs = 0;
3907	if (strhFindReplace(&pszText, &ulOfs, pcszSearch, pcszReplaceWith) > 0)
3908	{
3909	WinSetWindowText(hwnd, pszText);
3910	brc = TRUE;
3911	}
3912
3913	free(pszText);
3914	}
3915
3916	return brc;
3917	}
3918
3919	/*
3920	*@@ winhEnableDlgItems:
3921	* this enables/disables a whole range of controls
3922	* in a window by enumerating the child windows
3923	* until usIDFirst is found. If so, that subwindow
3924	* is enabled/disabled and all the following windows
3925	* in the enumeration also, until usIDLast is found.
3926	*
3927	* Note that this affects _all_ controls following
3928	* the usIDFirst window, no matter what ID they have
3929	* (even if "-1"), until usIDLast is found.
3930	*
3931	* Returns the no. of controls which were enabled/disabled
3932	* (null if none).
3933	*
3934	*@@added V0.9.0 [umoeller]
3935	*@@changed V0.9.1 (99-12-20) [umoeller]: renamed from winhEnableDlgItems
3936	*/
3937
3938	ULONG winhEnableControls(HWND hwndDlg, // in: dialog window
3939	USHORT usIDFirst, // in: first affected control ID
3940	USHORT usIDLast, // in: last affected control ID (inclusive)
3941	BOOL fEnable) // in: enable or disable?
3942	{
3943	HENUM henum1 = NULLHANDLE;
3944	HWND hwndThis = NULLHANDLE;
3945	ULONG ulCount = 0;
3946
3947	henum1 = WinBeginEnumWindows(hwndDlg);
3948	while ((hwndThis = WinGetNextWindow(henum1)) != NULLHANDLE)
3949	{
3950	USHORT usIDCheckFirst = WinQueryWindowUShort(hwndThis, QWS_ID),
3951	usIDCheckLast;
3952	if (usIDCheckFirst == usIDFirst)
3953	{
3954	WinEnableWindow(hwndThis, fEnable);
3955	ulCount++;
3956
3957	while ((hwndThis = WinGetNextWindow(henum1)) != NULLHANDLE)
3958	{
3959	WinEnableWindow(hwndThis, fEnable);
3960	ulCount++;
3961	usIDCheckLast = WinQueryWindowUShort(hwndThis, QWS_ID);
3962	if (usIDCheckLast == usIDLast)
3963	break;
3964	}
3965
3966	break; // outer loop
3967	}
3968	}
3969	WinEndEnumWindows(henum1);
3970
3971	return ulCount;
3972	}
3973
3974	/*
3975	*@@ winhEnableControls2:
3976	* like winhEnableControls, but instead this
3977	* takes an array of ULONGs as input, which
3978	* is assumed to contain the dialog IDs of
3979	* the controls to be enabled/disabled.
3980	*
3981	*@@added V0.9.19 (2002-05-28) [umoeller]
3982	*/
3983
3984	ULONG winhEnableControls2(HWND hwndDlg, // in: dialog window
3985	const ULONG *paulIDs, // in: array of dialog IDs
3986	ULONG cIDs, // in: array item count (NOT array size)
3987	BOOL fEnable) // in: enable or disable?
3988	{
3989	ULONG ul,
3990	ulrc = 0;
3991	for (ul = 0;
3992	ul < cIDs;
3993	++ul)
3994	{
3995	if (WinEnableControl(hwndDlg, paulIDs[ul], fEnable))
3996	++ulrc;
3997	}
3998
3999	return ulrc;
4000	}
4001
4002	/*
4003	*@@ winhCreateStdWindow:
4004	* much like WinCreateStdWindow, but this one
4005	* allows you to have the standard window
4006	* positioned automatically, using a given
4007	* SWP structure (*pswpFrame).
4008	*
4009	* The frame is created with the specified parent
4010	* (usually HWND_DESKTOP), but no owner.
4011	*
4012	* The client window is created with the frame as
4013	* its parent and owner and gets an ID of FID_CLIENT.
4014	*
4015	* Alternatively, you can set pswpFrame to NULL
4016	* and specify FCF_SHELLPOSITION with flFrameCreateFlags.
4017	* If you want the window to be shown, specify
4018	* SWP_SHOW (and maybe SWP_ACTIVATE) in *pswpFrame.
4019	*
4020	*@@added V0.9.0 [umoeller]
4021	*@@changed V0.9.5 (2000-08-13) [umoeller]: flStyleClient never worked, fixed
4022	*@@changed V0.9.7 (2000-12-08) [umoeller]: fixed client calc for invisible window
4023	*@@changed V1.0.1 (2002-11-30) [umoeller]: added support for NULL pcszClassClient
4024	*/
4025
4026	HWND winhCreateStdWindow(HWND hwndFrameParent, // in: normally HWND_DESKTOP
4027	PSWP pswpFrame, // in: frame wnd pos (ptr can be NULL)
4028	ULONG flFrameCreateFlags, // in: FCF_* flags
4029	ULONG ulFrameStyle, // in: WS_* flags (e.g. WS_VISIBLE, WS_ANIMATE)
4030	const char *pcszFrameTitle, // in: frame title (title bar)
4031	ULONG ulResourcesID, // in: according to FCF_* flags
4032	const char *pcszClassClient, // in: client class name (can be NULL for no client)
4033	ULONG flStyleClient, // in: client style
4034	ULONG ulID, // in: frame window ID
4035	PVOID pClientCtlData, // in: pCtlData structure pointer for client
4036	PHWND phwndClient) // out: created client wnd (required)
4037	{
4038	FRAMECDATA fcdata;
4039	HWND hwndFrame;
4040	RECTL rclClient;
4041
4042	fcdata.cb = sizeof(FRAMECDATA);
4043	fcdata.flCreateFlags = flFrameCreateFlags;
4044	fcdata.hmodResources = (HMODULE)NULL;
4045	fcdata.idResources = ulResourcesID;
4046
4047	// create the frame and client windows
4048	if (hwndFrame = WinCreateWindow(hwndFrameParent,
4049	WC_FRAME,
4050	(PSZ)pcszFrameTitle,
4051	ulFrameStyle,
4052	0,0,0,0,
4053	NULLHANDLE,
4054	HWND_TOP,
4055	ulID,
4056	&fcdata,
4057	NULL))
4058	{
4059	if ( (!pcszClassClient) // V1.0.1 (2002-11-30) [umoeller]
4060	\|\| (*phwndClient = WinCreateWindow(hwndFrame, // parent
4061	(PSZ)pcszClassClient, // class
4062	NULL, // no title
4063	flStyleClient, // style
4064	0,0,0,0, // size and position = 0
4065	hwndFrame, // owner
4066	HWND_BOTTOM, // bottom z-order
4067	FID_CLIENT, // frame window ID
4068	pClientCtlData, // class data
4069	NULL)) // no presparams
4070	)
4071	{
4072	if (pswpFrame)
4073	{
4074	// position frame
4075	WinSetWindowPos(hwndFrame,
4076	pswpFrame->hwndInsertBehind,
4077	pswpFrame->x,
4078	pswpFrame->y,
4079	pswpFrame->cx,
4080	pswpFrame->cy,
4081	pswpFrame->fl);
4082
4083	if (!pcszClassClient)
4084	*phwndClient = NULLHANDLE;
4085	else
4086	{
4087	// position client
4088	// WinQueryWindowRect(hwndFrame, &rclClient);
4089	// doesn't work because it might be invisible V0.9.7 (2000-12-08) [umoeller]
4090	rclClient.xLeft = 0;
4091	rclClient.yBottom = 0;
4092	rclClient.xRight = pswpFrame->cx;
4093	rclClient.yTop = pswpFrame->cy;
4094	WinCalcFrameRect(hwndFrame,
4095	&rclClient,
4096	TRUE); // calc client from frame
4097	WinSetWindowPos(*phwndClient,
4098	HWND_TOP,
4099	rclClient.xLeft,
4100	rclClient.yBottom,
4101	rclClient.xRight - rclClient.xLeft,
4102	rclClient.yTop - rclClient.yBottom,
4103	SWP_MOVE \| SWP_SIZE \| SWP_SHOW);
4104	}
4105	}
4106	}
4107	}
4108
4109	return hwndFrame;
4110	}
4111
4112	/*
4113	*@@ winhCreateObjectWindow:
4114	* creates an object window of the specified
4115	* window class, which you should have registered
4116	* before calling this. pvCreateParam will be
4117	* given to the window on WM_CREATE.
4118	*
4119	* Returns the HWND of the object window or
4120	* NULLHANDLE on errors.
4121	*
4122	*@@added V0.9.3 (2000-04-17) [umoeller]
4123	*@@changed V0.9.7 (2001-01-17) [umoeller]: made this a function from a macro
4124	*/
4125
4126	HWND winhCreateObjectWindow(const char *pcszWindowClass, // in: PM window class name
4127	PVOID pvCreateParam) // in: create param
4128	{
4129	return WinCreateWindow(HWND_OBJECT,
4130	(PSZ)pcszWindowClass,
4131	(PSZ)"",
4132	0,
4133	0,0,0,0,
4134	0,
4135	HWND_BOTTOM,
4136	0,
4137	pvCreateParam,
4138	NULL);
4139	}
4140
4141	/*
4142	*@@ winhCreateControl:
4143	* creates a control with a size and position of 0.
4144	*
4145	*@@added V0.9.9 (2001-03-13) [umoeller]
4146	*@@changed V1.0.0 (2002-08-26) [umoeller]: added separate hwndOwner
4147	*/
4148
4149	HWND winhCreateControl(HWND hwndParent, // in: parent window
4150	HWND hwndOwner, // in: owner window
4151	const char *pcszClass, // in: window class (e.g. WC_BUTTON)
4152	const char *pcszText, // in: window title
4153	ULONG ulStyle, // in: control style
4154	ULONG ulID) // in: control ID
4155	{
4156	return WinCreateWindow(hwndParent,
4157	(PSZ)pcszClass,
4158	(PSZ)pcszText,
4159	ulStyle,
4160	0, 0, 0, 0,
4161	hwndOwner,
4162	HWND_TOP,
4163	ulID,
4164	NULL,
4165	NULL);
4166	}
4167
4168	/*
4169	*@@ winhRepaintWindows:
4170	* this repaints all children of hwndParent.
4171	* If this is passed as HWND_DESKTOP, the
4172	* whole screen is repainted.
4173	*
4174	*@@changed V0.9.7 (2000-12-13) [umoeller]: hwndParent was never respected, fixed
4175	*/
4176
4177	VOID winhRepaintWindows(HWND hwndParent)
4178	{
4179	HWND hwndTop;
4180	HENUM henum = WinBeginEnumWindows(hwndParent);
4181	while ((hwndTop = WinGetNextWindow(henum)))
4182	if (WinIsWindowShowing(hwndTop))
4183	WinInvalidateRect(hwndTop, NULL, TRUE);
4184	WinEndEnumWindows(henum);
4185	}
4186
4187	/*
4188	*@@ winhFindMsgQueue:
4189	* returns the message queue which matches
4190	* the given process and thread IDs. Since,
4191	* per IBM definition, every thread may only
4192	* have one MQ, this should be unique.
4193	*
4194	*@@added V0.9.2 (2000-03-08) [umoeller]
4195	*/
4196
4197	HMQ winhFindMsgQueue(PID pid, // in: process ID
4198	TID tid, // in: thread ID
4199	HAB* phab) // out: anchor block
4200	{
4201	HWND hwndThis = 0,
4202	rc = 0;
4203	HENUM henum = WinBeginEnumWindows(HWND_OBJECT);
4204	while ((hwndThis = WinGetNextWindow(henum)))
4205	{
4206	CHAR szClass[200];
4207	if (WinQueryClassName(hwndThis, sizeof(szClass), szClass))
4208	{
4209	if (!strcmp(szClass, "#32767"))
4210	{
4211	// message queue window:
4212	PID pidWin = 0;
4213	TID tidWin = 0;
4214	WinQueryWindowProcess(hwndThis,
4215	&pidWin,
4216	&tidWin);
4217	if ( (pidWin == pid)
4218	&& (tidWin == tid)
4219	)
4220	{
4221	// get HMQ from window words
4222	if (rc = WinQueryWindowULong(hwndThis, QWL_HMQ))
4223	if (phab)
4224	*phab = WinQueryAnchorBlock(hwndThis);
4225
4226	break;
4227	}
4228	}
4229	}
4230	}
4231	WinEndEnumWindows(henum);
4232
4233	return rc;
4234	}
4235
4236	/*
4237	*@@ winhFindHardErrorWindow:
4238	* this searches all children of HWND_OBJECT
4239	* for the PM hard error windows, which are
4240	* invisible most of the time. When a hard
4241	* error occurs, that window is made a child
4242	* of HWND_DESKTOP instead.
4243	*
4244	* Stolen from ProgramCommander/2 (C) Roman Stangl.
4245	*
4246	*@@added V0.9.3 (2000-04-27) [umoeller]
4247	*/
4248
4249	VOID winhFindPMErrorWindows(HWND *phwndHardError, // out: hard error window
4250	HWND *phwndSysError) // out: system error window
4251	{
4252	PID pidObject; // HWND_OBJECT's process and thread id
4253	TID tidObject;
4254	PID pidObjectChild; // HWND_OBJECT's child window process and thread id
4255	TID tidObjectChild;
4256	HENUM henumObject; // HWND_OBJECT enumeration handle
4257	HWND hwndObjectChild; // Window handle of current HWND_OBJECT child
4258	UCHAR ucClassName[32]; // Window class e.g. #1 for WC_FRAME
4259	CLASSINFO classinfoWindow; // Class info of current HWND_OBJECT child
4260
4261	*phwndHardError = NULLHANDLE;
4262	*phwndSysError = NULLHANDLE;
4263
4264	// query HWND_OBJECT's window process
4265	WinQueryWindowProcess(WinQueryObjectWindow(HWND_DESKTOP), &pidObject, &tidObject);
4266	// enumerate all child windows of HWND_OBJECT
4267	henumObject = WinBeginEnumWindows(HWND_OBJECT);
4268	while ((hwndObjectChild = WinGetNextWindow(henumObject)))
4269	{
4270	// see if the current HWND_OBJECT child window runs in the
4271	// process of HWND_OBJECT (PM)
4272	WinQueryWindowProcess(hwndObjectChild, &pidObjectChild, &tidObjectChild);
4273	if (pidObject == pidObjectChild)
4274	{
4275	// get the child window's data
4276	WinQueryClassName(hwndObjectChild,
4277	sizeof(ucClassName),
4278	(PCH)ucClassName);
4279	WinQueryClassInfo(WinQueryAnchorBlock(hwndObjectChild),
4280	(PSZ)ucClassName,
4281	&classinfoWindow);
4282	if ( (!strcmp((PSZ)ucClassName, "#1")
4283	\|\| (classinfoWindow.flClassStyle & CS_FRAME))
4284	)
4285	{
4286	// if the child window is a frame window and running in
4287	// HWND_OBJECT's (PM's) window process, it must be the
4288	// PM Hard Error or System Error window
4289	WinQueryClassName(WinWindowFromID(hwndObjectChild,
4290	FID_CLIENT),
4291	sizeof(ucClassName),
4292	(PSZ)ucClassName);
4293	if (!strcmp((PSZ)ucClassName, "PM Hard Error"))
4294	{
4295	*phwndHardError = hwndObjectChild;
4296	if (*phwndSysError)
4297	// we found the other one already:
4298	// stop searching, we got both
4299	break;
4300	}
4301	else
4302	{
4303	printf("Utility: Found System Error %08X\n", (int)hwndObjectChild);
4304	*phwndSysError = hwndObjectChild;
4305	if (*phwndHardError)
4306	// we found the other one already:
4307	// stop searching, we got both
4308	break;
4309	}
4310	}
4311	} // end if (pidObject == pidObjectChild)
4312	} // end while ((hwndObjectChild = WinGetNextWindow(henumObject)) != NULLHANDLE)
4313	WinEndEnumWindows(henumObject);
4314	}
4315
4316	/*
4317	*@@ winhCreateFakeDesktop:
4318	* this routine creates and displays a frameless window over
4319	* the whole screen in the color of PM's Desktop to fool the
4320	* user that all windows have been closed (which in fact might
4321	* not be the case).
4322	*
4323	* This window's background color is set to the Desktop's
4324	* (PM's one, not the WPS's one).
4325	*
4326	* Returns the HWND of this window.
4327	*/
4328
4329	HWND winhCreateFakeDesktop(HWND hwndSibling)
4330	{
4331	// presparam for background
4332	typedef struct _BACKGROUND
4333	{
4334	ULONG cb; // length of the aparam parameter, in bytes
4335	ULONG id; // attribute type identity
4336	ULONG cb2; // byte count of the ab parameter
4337	RGB rgb; // attribute value
4338	} BACKGROUND;
4339
4340	BACKGROUND background;
4341	LONG lDesktopColor;
4342
4343	// create fake desktop window = empty window with
4344	// the size of full screen
4345	lDesktopColor = WinQuerySysColor(HWND_DESKTOP,
4346	SYSCLR_BACKGROUND,
4347	0);
4348	background.cb = sizeof(background.id)
4349	+ sizeof(background.cb)
4350	+ sizeof(background.rgb);
4351	background.id = PP_BACKGROUNDCOLOR;
4352	background.cb2 = sizeof(RGB);
4353	background.rgb.bBlue = (CHAR1FROMMP(lDesktopColor));
4354	background.rgb.bGreen= (CHAR2FROMMP(lDesktopColor));
4355	background.rgb.bRed = (CHAR3FROMMP(lDesktopColor));
4356
4357	return WinCreateWindow(HWND_DESKTOP, // parent window
4358	WC_FRAME, // class name
4359	"", // window text
4360	WS_VISIBLE, // window style
4361	0, 0, // position and size
4362	G_cxScreen,
4363	G_cyScreen,
4364	NULLHANDLE, // owner window
4365	hwndSibling, // sibling window
4366	1, // window id
4367	NULL, // control data
4368	&background); // presentation parms
4369	}
4370
4371	/*
4372	*@@ winhAssertWarp4Notebook:
4373	* this takes hwndDlg as a notebook dialog page and
4374	* goes thru all its controls. If a control with an
4375	* ID <= udIdThreshold is found, this is assumed to
4376	* be a button which is to be given the BS_NOTEBOOKBUTTON
4377	* style. You should therefore give all your button
4378	* controls which should be moved such an ID.
4379	*
4380	* Note that this function will now automatically
4381	* find out the lowest y coordinate that was used
4382	* for a non-notebook button and move all controls
4383	* down accordingly. As a result, ulDownUnit must
4384	* no longer be specified (V0.9.19).
4385	*
4386	* This function is useful if you wish to create
4387	* notebook pages using dlgedit.exe which are compatible
4388	* with both Warp 3 and Warp 4. This should be executed
4389	* in WM_INITDLG of the notebook dlg function if the app
4390	* has determined that it is running on Warp 4.
4391	*
4392	*@@changed V0.9.16 (2002-02-02) [umoeller]: fixed entry fields
4393	*@@changed V0.9.19 (2002-04-24) [umoeller]: removed ulDownUnits
4394	*@@changed V0.9.19 (2002-05-02) [umoeller]: fix for combobox
4395	*/
4396
4397	BOOL winhAssertWarp4Notebook(HWND hwndDlg,
4398	USHORT usIdThreshold) // in: ID threshold
4399	{
4400	BOOL brc = FALSE;
4401
4402	if (doshIsWarp4())
4403	{
4404	LONG yLowest = 10000;
4405	HWND hwndItem;
4406	HENUM henum = 0;
4407	PSWP paswp,
4408	pswpThis;
4409	ULONG cWindows = 0,
4410	ul;
4411
4412	BOOL fIsVisible;
4413
4414	if (fIsVisible = WinIsWindowVisible(hwndDlg))
4415	// avoid flicker
4416	WinEnableWindowUpdate(hwndDlg, FALSE);
4417
4418	if (paswp = (PSWP)malloc(sizeof(SWP) * 100))
4419	{
4420	pswpThis = paswp;
4421
4422	// loop 1: set notebook buttons, find lowest y used
4423	henum = WinBeginEnumWindows(hwndDlg);
4424	while ((hwndItem = WinGetNextWindow(henum)))
4425	{
4426	USHORT usId = WinQueryWindowUShort(hwndItem, QWS_ID);
4427	// _Pmpf(("hwndItem: 0x%lX, ID: 0x%lX", hwndItem, usId));
4428	if (usId <= usIdThreshold)
4429	{
4430	// pushbutton to change:
4431	WinSetWindowBits(hwndItem,
4432	QWL_STYLE,
4433	BS_NOTEBOOKBUTTON, BS_NOTEBOOKBUTTON);
4434	brc = TRUE;
4435	}
4436	else
4437	{
4438	// no pushbutton to change:
4439	CHAR szClass[10];
4440
4441	WinQueryWindowPos(hwndItem, pswpThis);
4442
4443	// special handling for entry fields
4444	// V0.9.16 (2002-02-02) [umoeller]
4445	WinQueryClassName(hwndItem, sizeof(szClass), szClass);
4446	if (!strcmp(szClass, "#6"))
4447	{
4448	pswpThis->x += 3 * WinQuerySysValue(HWND_DESKTOP, SV_CXBORDER);
4449	pswpThis->y += 3 * WinQuerySysValue(HWND_DESKTOP, SV_CYBORDER);
4450	}
4451
4452	// check lowest y
4453	if ( (pswpThis->y < yLowest)
4454	// ignore combobox, this will distort everything
4455	// AGAIN ... sigh V0.9.19 (2002-05-02) [umoeller]
4456	&& (strcmp(szClass, "#2"))
4457	)
4458	yLowest = pswpThis->y ;
4459
4460	++pswpThis;
4461	if (++cWindows == 100)
4462	break;
4463	}
4464	} // end while ((hwndItem = WinGetNextWindow(henum)))
4465	WinEndEnumWindows(henum);
4466
4467	// now adjust window positions
4468	pswpThis = paswp;
4469	for (ul = 0;
4470	ul < cWindows;
4471	++ul, ++pswpThis)
4472	{
4473	pswpThis->y -= (yLowest - 8);
4474	// 8 is magic to match the lower border of the
4475	// standard WPS notebook pages V0.9.19 (2002-04-24) [umoeller]
4476	pswpThis->fl = SWP_MOVE;
4477	}
4478
4479	WinSetMultWindowPos(WinQueryAnchorBlock(hwndDlg),
4480	paswp,
4481	cWindows);
4482
4483	free(paswp);
4484	}
4485
4486	if (fIsVisible)
4487	WinShowWindow(hwndDlg, TRUE);
4488	}
4489
4490	return brc;
4491	}
4492
4493	/*
4494	*@@ winhDrawFormattedText:
4495	* this func takes a rectangle and draws pszText into
4496	* it, breaking the words as neccessary. The line spacing
4497	* is determined from the font currently selected in hps.
4498	*
4499	* As opposed to WinDrawText, this can draw several lines
4500	* at once, and format the _complete_ text according to the
4501	* flCmd parameter, which is like with WinDrawText.
4502	*
4503	* After this function returns, *prcl is modified like this:
4504	*
4505	* -- yTop and yBottom contain the upper and lower boundaries
4506	* which were needed to draw the text. This depends on
4507	* whether DT_TOP etc. were specified.
4508	* To get the height of the rectangle used, calculate the
4509	* delta between yTop and yBottom.
4510	*
4511	* -- xLeft and xRight are modified to contain the outmost
4512	* left and right coordinates which were needed to draw
4513	* the text. This will be set to the longest line which
4514	* was encountered.
4515	*
4516	* The following DT_* flags are supported:
4517	*
4518	* -- DT_LEFT, DT_CENTER, DT_RIGHT all work.
4519	*
4520	* -- Vertically however only DT_TOP is supported.
4521	*
4522	* -- You can specify DT_QUERYEXTENT to only have
4523	* these text boundaries calculated without actually
4524	* drawing.
4525	*
4526	* Note that DT_TEXTATTRS will always be added, so you
4527	* will want to call GpiSetColor before this.
4528	*
4529	* This returns the number of lines drawn.
4530	*
4531	*@@changed V0.9.0 [umoeller]: prcl.xLeft and xRight are now updated too upon return
4532	*/
4533
4534	ULONG winhDrawFormattedText(HPS hps, // in: presentation space; its settings
4535	// are used, but not altered
4536	PRECTL prcl, // in/out: rectangle to use for drawing
4537	// (modified)
4538	const char *pcszText, // in: text to draw (zero-terminated)
4539	ULONG flCmd) // in: DT_* flags like in WinDrawText; see remarks
4540	{
4541	PSZ p = (PSZ)pcszText;
4542	LONG lDrawn = 1,
4543	lTotalDrawn = 0,
4544	lLineCount = 0,
4545	lOrigYTop = prcl->yTop;
4546	ULONG ulTextLen = strlen(pcszText),
4547	ulCharHeight,
4548	flCmd2,
4549	xLeftmost = prcl->xRight,
4550	xRightmost = prcl->xLeft;
4551	RECTL rcl2;
4552
4553	flCmd2 = flCmd \| DT_WORDBREAK \| DT_TEXTATTRS;
4554
4555	ulCharHeight = gpihQueryLineSpacing(hps);
4556
4557	while ( (lDrawn)
4558	&& (lTotalDrawn < ulTextLen)
4559	)
4560	{
4561	memcpy(&rcl2, prcl, sizeof(rcl2));
4562	lDrawn = WinDrawText(hps,
4563	ulTextLen - lTotalDrawn,
4564	p,
4565	&rcl2,
4566	0,
4567	0, // colors
4568	flCmd2);
4569
4570	// update char counters
4571	p += lDrawn;
4572	lTotalDrawn += lDrawn;
4573
4574	// update x extents
4575	if (rcl2.xLeft < xLeftmost)
4576	xLeftmost = rcl2.xLeft;
4577	if (rcl2.xRight > xRightmost)
4578	xRightmost = rcl2.xRight;
4579
4580	// update y for next line
4581	prcl->yTop -= ulCharHeight;
4582
4583	// increase line count
4584	lLineCount++;
4585	}
4586
4587	prcl->xLeft = xLeftmost;
4588	prcl->xRight = xRightmost;
4589	prcl->yBottom = prcl->yTop;
4590	prcl->yTop = lOrigYTop;
4591
4592	return lLineCount;
4593	}
4594
4595	/*
4596	*@@ winhQuerySwitchList:
4597	* returns the switch list in a newly
4598	* allocated buffer. This does the
4599	* regular double WinQuerySwitchList
4600	* call to first get the no. of items
4601	* and then get the items.
4602	*
4603	* The no. of items can be found in
4604	* the returned SWBLOCK.cwsentry.
4605	*
4606	* Returns NULL on errors. Use
4607	* free() to free the return value.
4608	*
4609	*@@added V0.9.7 (2000-12-06) [umoeller]
4610	*/
4611
4612	PSWBLOCK winhQuerySwitchList(HAB hab)
4613	{
4614	ULONG cItems = WinQuerySwitchList(hab, NULL, 0);
4615	ULONG ulBufSize = (cItems * sizeof(SWENTRY)) + sizeof(HSWITCH);
4616	PSWBLOCK pSwBlock;
4617	if (pSwBlock = (PSWBLOCK)malloc(ulBufSize))
4618	{
4619	if (!(cItems = WinQuerySwitchList(hab, pSwBlock, ulBufSize)))
4620	{
4621	free(pSwBlock);
4622	pSwBlock = NULL;
4623	}
4624	}
4625
4626	return pSwBlock;
4627	}
4628
4629	typedef HSWITCH APIENTRY WINHSWITCHFROMHAPP(HAPP happ);
4630
4631	/*
4632	*@@ winhHSWITCHfromHAPP:
4633	* resolves and calls the undocumented
4634	* WinHSWITCHfromHAPP API.
4635	*
4636	*@@added V0.9.19 (2002-04-17) [umoeller]
4637	*/
4638
4639	HSWITCH winhHSWITCHfromHAPP(HAPP happ)
4640	{
4641	static WINHSWITCHFROMHAPP *pWinHSWITCHfromHAPP = NULL;
4642
4643	if (!pWinHSWITCHfromHAPP)
4644	// first call: import WinHSWITCHfromHAPP
4645	// WinHSWITCHfromHAPP PMMERGE.5199
4646	doshQueryProcAddr("PMMERGE",
4647	5199,
4648	(PFN*)&pWinHSWITCHfromHAPP);
4649
4650	if (pWinHSWITCHfromHAPP)
4651	return pWinHSWITCHfromHAPP(happ);
4652
4653	return NULLHANDLE;
4654	}
4655
4656	/*
4657	*@@ winhQueryTasklistWindow:
4658	* returns the window handle of the PM task list.
4659	*
4660	*@@added V0.9.7 (2000-12-07) [umoeller]
4661	*/
4662
4663	HWND winhQueryTasklistWindow(VOID)
4664	{
4665	SWBLOCK swblock;
4666
4667	// the tasklist has entry #0 in the SWBLOCK
4668	WinQuerySwitchList(NULLHANDLE, &swblock, sizeof(SWBLOCK));
4669
4670	return swblock.aswentry[0].swctl.hwnd;
4671	}
4672
4673	/*
4674	*@@ winhKillTasklist:
4675	* this will destroy the Tasklist (window list) window.
4676	* Note: you will only be able to get it back after a
4677	* reboot, not a WPS restart. Only for use at shutdown and such.
4678	* This trick by Uri J. Stern at
4679	* http://zebra.asta.fh-weingarten.de/os2/Snippets/Howt8881.HTML
4680	*/
4681
4682	VOID winhKillTasklist(VOID)
4683	{
4684	HWND hwndTasklist = winhQueryTasklistWindow();
4685	WinPostMsg(hwndTasklist,
4686	0x0454, // undocumented msg for killing tasklist
4687	NULL, NULL);
4688	}
4689
4690	// the following must be added for EMX (99-10-22) [umoeller]
4691	#ifndef NERR_BufTooSmall
4692	#define NERR_BASE 2100
4693	#define NERR_BufTooSmall (NERR_BASE+23)
4694	// the API return buffer is too small
4695	#endif
4696
4697	/*
4698	*@@ winhQueryPendingSpoolJobs:
4699	* returns the number of pending print jobs in the spooler
4700	* or 0 if none. Useful for testing before shutdown.
4701	*/
4702
4703	ULONG winhQueryPendingSpoolJobs(VOID)
4704	{
4705	// BOOL rcPending = FALSE;
4706	ULONG ulTotalJobCount = 0;
4707
4708	SPLERR splerr;
4709	USHORT jobCount;
4710	ULONG cbBuf;
4711	ULONG cTotal;
4712	ULONG cReturned;
4713	ULONG cbNeeded;
4714	ULONG ulLevel;
4715	ULONG i,j;
4716	PSZ pszComputerName;
4717	PBYTE pBuf = NULL;
4718	PPRQINFO3 prq;
4719	PPRJINFO2 prj2;
4720
4721	ulLevel = 4L;
4722	pszComputerName = (PSZ)NULL;
4723	splerr = SplEnumQueue(pszComputerName, ulLevel, pBuf, 0L, // cbBuf
4724	&cReturned, &cTotal,
4725	&cbNeeded, NULL);
4726	if ( (splerr == ERROR_MORE_DATA)
4727	\|\| (splerr == NERR_BufTooSmall)
4728	)
4729	{
4730	if (!DosAllocMem((PPVOID)&pBuf,
4731	cbNeeded,
4732	PAG_READ \| PAG_WRITE \| PAG_COMMIT))
4733	{
4734	cbBuf = cbNeeded;
4735	splerr = SplEnumQueue(pszComputerName, ulLevel, pBuf, cbBuf,
4736	&cReturned, &cTotal,
4737	&cbNeeded, NULL);
4738	if (splerr == NO_ERROR)
4739	{
4740	// set pointer to point to the beginning of the buffer
4741	prq = (PPRQINFO3)pBuf;
4742
4743	// cReturned has the count of the number of PRQINFO3 structures
4744	for (i = 0;
4745	i < cReturned;
4746	i++)
4747	{
4748	// save the count of jobs; there are this many PRJINFO2
4749	// structures following the PRQINFO3 structure
4750	jobCount = prq->cJobs;
4751	// _Pmpf(( "Job count in this queue is %d",jobCount ));
4752
4753	// increment the pointer past the PRQINFO3 structure
4754	prq++;
4755
4756	// set a pointer to point to the first PRJINFO2 structure
4757	prj2=(PPRJINFO2)prq;
4758	for (j = 0;
4759	j < jobCount;
4760	j++)
4761	{
4762	// increment the pointer to point to the next structure
4763	prj2++;
4764	// increase the job count, which we'll return
4765	ulTotalJobCount++;
4766
4767	} // endfor jobCount
4768
4769	// after doing all the job structures, prj2 points to the next
4770	// queue structure; set the pointer for a PRQINFO3 structure
4771	prq = (PPRQINFO3)prj2;
4772	} //endfor cReturned
4773	} // endif NO_ERROR
4774	DosFreeMem(pBuf);
4775	}
4776	} // end if Q level given
4777
4778	return ulTotalJobCount;
4779	}
4780
4781	/*
4782	*@@ winhSetNumLock:
4783	* this sets the NumLock key on or off, depending
4784	* on fState.
4785	*
4786	* Based on code from WarpEnhancer, (C) Achim Hasenmller.
4787	*
4788	*@@added V0.9.1 (99-12-18) [umoeller]
4789	*/
4790
4791	VOID winhSetNumLock(BOOL fState)
4792	{
4793	// BOOL fRestoreKBD = FALSE; // Assume we're not going to close Kbd
4794	BYTE KeyStateTable[256];
4795	ULONG ulActionTaken; // Used by DosOpen
4796	HFILE hKbd;
4797
4798	// read keyboard state table
4799	if (WinSetKeyboardStateTable(HWND_DESKTOP, &KeyStateTable[0],
4800	FALSE))
4801	{
4802	// first set the PM state
4803	if (fState)
4804	KeyStateTable[VK_NUMLOCK] \|= 0x01; // Turn numlock on
4805	else
4806	KeyStateTable[VK_NUMLOCK] &= 0xFE; // Turn numlock off
4807
4808	// set keyboard state table with new state values
4809	WinSetKeyboardStateTable(HWND_DESKTOP, &KeyStateTable[0], TRUE);
4810	}
4811
4812	// now set the OS/2 keyboard state
4813
4814	// try to open OS/2 keyboard driver
4815	if (!DosOpen("KBD$",
4816	&hKbd, &ulActionTaken,
4817	0, // cbFile
4818	FILE_NORMAL,
4819	OPEN_ACTION_FAIL_IF_NEW \| OPEN_ACTION_OPEN_IF_EXISTS,
4820	OPEN_SHARE_DENYNONE \| OPEN_ACCESS_READWRITE,
4821	NULL))
4822	{
4823	SHIFTSTATE ShiftState;
4824	ULONG DataLen = sizeof(SHIFTSTATE);
4825
4826	memset(&ShiftState, '\0', DataLen);
4827	DosDevIOCtl(hKbd, IOCTL_KEYBOARD, KBD_GETSHIFTSTATE,
4828	NULL, 0L, NULL,
4829	&ShiftState, DataLen, &DataLen);
4830
4831	if (fState)
4832	ShiftState.fsState \|= 0x0020; // turn NumLock on
4833	else
4834	ShiftState.fsState &= 0xFFDF; // turn NumLock off
4835
4836	DosDevIOCtl(hKbd, IOCTL_KEYBOARD, KBD_SETSHIFTSTATE,
4837	&ShiftState, DataLen, &DataLen,
4838	NULL, 0L, NULL);
4839
4840	// now close OS/2 keyboard driver
4841	DosClose(hKbd);
4842	}
4843	}
4844
4845	/*
4846	*@@ winhSetClipboardText:
4847	* sets the clipboard data to the given text,
4848	* replacing the current clipboard contents.
4849	*
4850	*@@added V1.0.0 (2002-08-28) [umoeller]
4851	*/
4852
4853	BOOL winhSetClipboardText(HAB hab,
4854	PCSZ pcsz,
4855	ULONG cbSize) // in: size of buffer INCLUDING null byte
4856	{
4857	BOOL fSuccess = FALSE;
4858
4859	if (WinOpenClipbrd(hab))
4860	{
4861	PSZ pszDest;
4862	if (!DosAllocSharedMem((PVOID*)&pszDest,
4863	NULL,
4864	cbSize,
4865	PAG_WRITE \| PAG_COMMIT \| OBJ_GIVEABLE))
4866	{
4867	memcpy(pszDest,
4868	pcsz,
4869	cbSize);
4870
4871	WinEmptyClipbrd(hab);
4872
4873	fSuccess = WinSetClipbrdData(hab, // anchor-block handle
4874	(ULONG)pszDest, // pointer to text data
4875	CF_TEXT, // data is in text format
4876	CFI_POINTER); // passing a pointer
4877
4878	// PMREF says (implicitly) it is not necessary to call
4879	// DosFreeMem. I hope that is correct.
4880	// V0.9.19 (2002-06-02) [umoeller]
4881	}
4882
4883	WinCloseClipbrd(hab);
4884	}
4885
4886	return fSuccess;
4887	}
4888
4889	/*
4890	*@@category: Helpers\PM helpers\Workplace Shell\WPS class list
4891	*/
4892
4893	/* ******************************************************************
4894	*
4895	* WPS Class List helpers
4896	*
4897	********************************************************************/
4898
4899	/*
4900	*@@ winhQueryWPSClassList:
4901	* this returns the WPS class list in a newly
4902	* allocated buffer. This is just a shortcut to
4903	* the usual double WinEnumObjectClasses call.
4904	*
4905	* The return value is actually of the POBJCLASS type,
4906	* so you better cast this manually. We declare this
4907	* this as PBYTE though because POBJCLASS requires
4908	* INCL_WINWORKPLACE.
4909	* See WinEnumObjectClasses() for details.
4910	*
4911	* Returns NULL on error. Use free()
4912	* to free the return value.
4913	*
4914	*@@added V0.9.0 [umoeller]
4915	*/
4916
4917	PBYTE winhQueryWPSClassList(VOID)
4918	{
4919	ULONG ulSize;
4920	POBJCLASS pObjClass = 0;
4921
4922	// get WPS class list size
4923	if (WinEnumObjectClasses(NULL, &ulSize))
4924	{
4925	// allocate buffer
4926	pObjClass = (POBJCLASS)malloc(ulSize + 1);
4927	// and load the classes into it
4928	WinEnumObjectClasses(pObjClass, &ulSize);
4929	}
4930
4931	return (PBYTE)pObjClass;
4932	}
4933
4934	/*
4935	*@@ winhQueryWPSClass:
4936	* this returns the POBJCLASS item if pszClass is registered
4937	* with the WPS or NULL if the class could not be found.
4938	*
4939	* The return value is actually of the POBJCLASS type,
4940	* so you better cast this manually. We declare this
4941	* this as PBYTE though because POBJCLASS requires
4942	* INCL_WINWORKPLACE.
4943	*
4944	* This takes as input the return value of winhQueryWPSClassList,
4945	* which you must call first.
4946	*
4947	* <B>Usage:</B>
4948	+ PBYTE pClassList = winhQueryWPSClassList(),
4949	+ pWPFolder;
4950	+ if (pClassList)
4951	+ {
4952	+ if (pWPFolder = winhQueryWPSClass(pClassList, "WPFolder"))
4953	+ ...
4954	+ free(pClassList);
4955	+ }
4956	*
4957	*@@added V0.9.0 [umoeller]
4958	*/
4959
4960	PBYTE winhQueryWPSClass(PBYTE pObjClass, // in: buffer returned by
4961	// winhQueryWPSClassList
4962	const char *pszClass) // in: class name to query
4963	{
4964	PBYTE pbReturn = 0;
4965
4966	POBJCLASS pocThis = (POBJCLASS)pObjClass;
4967	// now go thru the WPS class list
4968	while (pocThis)
4969	{
4970	if (!strcmp(pocThis->pszClassName, pszClass))
4971	{
4972	pbReturn = (PBYTE)pocThis;
4973	break;
4974	}
4975
4976	// next class
4977	pocThis = pocThis->pNext;
4978	} // end while (pocThis)
4979
4980	return pbReturn;
4981	}
4982
4983	/*
4984	*@@ winhRegisterClass:
4985	* this works just like WinRegisterObjectClass,
4986	* except that it returns a more meaningful
4987	* error code than just FALSE in case registering
4988	* fails.
4989	*
4990	* This returns NO_ERROR if the class was successfully
4991	* registered (WinRegisterObjectClass returned TRUE).
4992	*
4993	* Otherwise, we do a DosLoadModule if maybe the DLL
4994	* couldn't be loaded in the first place. If DosLoadModule
4995	* did not return NO_ERROR, this function returns that
4996	* return code, which can be:
4997	*
4998	* -- 2 ERROR_FILE_NOT_FOUND: pcszModule does not exist
4999	* -- 2 ERROR_FILE_NOT_FOUND
5000	* -- 3 ERROR_PATH_NOT_FOUND
5001	* -- 4 ERROR_TOO_MANY_OPEN_FILES
5002	* -- 5 ERROR_ACCESS_DENIED
5003	* -- 8 ERROR_NOT_ENOUGH_MEMORY
5004	* -- 11 ERROR_BAD_FORMAT
5005	* -- 26 ERROR_NOT_DOS_DISK (unknown media type)
5006	* -- 32 ERROR_SHARING_VIOLATION
5007	* -- 33 ERROR_LOCK_VIOLATION
5008	* -- 36 ERROR_SHARING_BUFFER_EXCEEDED
5009	* -- 95 ERROR_INTERRUPT (interrupted system call)
5010	* -- 108 ERROR_DRIVE_LOCKED (by another process)
5011	* -- 123 ERROR_INVALID_NAME (illegal character or FS name not valid)
5012	* -- 127 ERROR_PROC_NOT_FOUND (DosQueryProcAddr error)
5013	* -- 180 ERROR_INVALID_SEGMENT_NUMBER
5014	* -- 182 ERROR_INVALID_ORDINAL
5015	* -- 190 ERROR_INVALID_MODULETYPE (probably an application)
5016	* -- 191 ERROR_INVALID_EXE_SIGNATURE (probably not LX DLL)
5017	* -- 192 ERROR_EXE_MARKED_INVALID (by linker)
5018	* -- 194 ERROR_ITERATED_DATA_EXCEEDS_64K (in a DLL segment)
5019	* -- 195 ERROR_INVALID_MINALLOCSIZE
5020	* -- 196 ERROR_DYNLINK_FROM_INVALID_RING
5021	* -- 198 ERROR_INVALID_SEGDPL
5022	* -- 199 ERROR_AUTODATASEG_EXCEEDS_64K
5023	* -- 201 ERROR_RELOCSRC_CHAIN_EXCEEDS_SEGLIMIT
5024	* -- 206 ERROR_FILENAME_EXCED_RANGE (not matching 8+3 spec)
5025	* -- 295 ERROR_INIT_ROUTINE_FAILED (DLL init routine failed)
5026	*
5027	* In all these cases, pszBuf may contain a meaningful
5028	* error message from DosLoadModule, especially if an import
5029	* could not be resolved.
5030	*
5031	* Still worse, if DosLoadModule returned NO_ERROR, we
5032	* probably have some SOM internal error. A probable
5033	* reason is that the parent class of pcszClassName
5034	* is not installed, but that's WPS/SOM internal
5035	* and cannot be queried from outside the WPS context.
5036	*
5037	* In that case, ERROR_OPEN_FAILED (110) is returned.
5038	* That one sounded good to me. ;-)
5039	*/
5040
5041	APIRET winhRegisterClass(const char* pcszClassName, // in: e.g. "XFolder"
5042	const char* pcszModule, // in: e.g. "C:\XFOLDER\XFLDR.DLL"
5043	PSZ pszBuf, // out: error message from DosLoadModule
5044	ULONG cbBuf) // in: sizeof(*pszBuf), passed to DosLoadModule
5045	{
5046	APIRET arc = NO_ERROR;
5047
5048	if (!WinRegisterObjectClass((PSZ)pcszClassName, (PSZ)pcszModule))
5049	{
5050	// failed: do more error checking then, try DosLoadModule
5051	HMODULE hmod = NULLHANDLE;
5052	if (!(arc = DosLoadModule(pszBuf, cbBuf,
5053	(PSZ)pcszModule,
5054	&hmod)))
5055	{
5056	// DosLoadModule succeeded:
5057	// some SOM error then
5058	DosFreeModule(hmod);
5059	arc = ERROR_OPEN_FAILED;
5060	}
5061	}
5062	// else: ulrc still 0 (== no error)
5063
5064	return arc;
5065	}
5066
5067	/*
5068	*@@ winhIsClassRegistered:
5069	* quick one-shot function which checks if
5070	* a class is currently registered. Calls
5071	* winhQueryWPSClassList and winhQueryWPSClass
5072	* in turn.
5073	*
5074	*@@added V0.9.2 (2000-02-26) [umoeller]
5075	*/
5076
5077	BOOL winhIsClassRegistered(const char *pcszClass)
5078	{
5079	BOOL brc = FALSE;
5080	PBYTE pClassList;
5081
5082	if (pClassList = winhQueryWPSClassList())
5083	{
5084	if (winhQueryWPSClass(pClassList, pcszClass))
5085	brc = TRUE;
5086
5087	free(pClassList);
5088	}
5089
5090	return brc;
5091	}
5092
5093	/*
5094	*@@category: Helpers\PM helpers\Workplace Shell
5095	*/
5096
5097	/*
5098	*@@ winhResetWPS:
5099	* restarts the WPS using PrfReset. Returns
5100	* one of the following:
5101	*
5102	* -- 0: no error.
5103	* -- 1: PrfReset failed.
5104	* -- 2 or 4: PrfQueryProfile failed.
5105	* -- 3: malloc() failed.
5106	*
5107	*@@added V0.9.4 (2000-07-01) [umoeller]
5108	*/
5109
5110	ULONG winhResetWPS(HAB hab)
5111	{
5112	ULONG ulrc = 0;
5113	// find out current profile names
5114	PRFPROFILE Profiles;
5115	Profiles.cchUserName = Profiles.cchSysName = 0;
5116	// first query their file name lengths
5117	if (PrfQueryProfile(hab, &Profiles))
5118	{
5119	// allocate memory for filenames
5120	Profiles.pszUserName = (PSZ)malloc(Profiles.cchUserName);
5121	Profiles.pszSysName = (PSZ)malloc(Profiles.cchSysName);
5122
5123	if (Profiles.pszSysName)
5124	{
5125	// get filenames
5126	if (PrfQueryProfile(hab, &Profiles))
5127	{
5128
5129	// "change" INIs to these filenames:
5130	// THIS WILL RESET THE WPS
5131	if (PrfReset(hab, &Profiles) == FALSE)
5132	ulrc = 1;
5133	free(Profiles.pszSysName);
5134	free(Profiles.pszUserName);
5135	}
5136	else
5137	ulrc = 2;
5138	}
5139	else
5140	ulrc = 3;
5141	}
5142	else
5143	ulrc = 4;
5144
5145	return ulrc;
5146	}
5147

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