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source: trunk/src/user32/new/dc.cpp@ 2575

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Last change on this file since 2575 was 2445, checked in by sandervl, 26 years ago
ScrollWindow & non-client scroll tracking bugfixes/changes
File size: 46.8 KB

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1	/* $Id: dc.cpp,v 1.14 2000-01-15 15:05:36 sandervl Exp $ */
2
3	/*
4	* DC functions for USER32
5	*
6	* Project Odin Software License can be found in LICENSE.TXT
7	*
8	*/
9
10	/*****************************************************************************
11	* Includes *
12	*****************************************************************************/
13
14	#include <odin.h>
15
16	#define INCL_WIN
17	#define INCL_GPI
18	#define INCL_GREALL
19	#define INCL_DEV
20	#include <os2wrap.h>
21	//#include <pmddi.h>
22	#include <stdlib.h>
23
24	#include "win32type.h"
25	#include <winconst.h>
26	#include <misc.h>
27	#include <win32wbase.h>
28	#include <math.h>
29	#include <limits.h>
30	#include "oslibwin.h"
31	#include "dcdata.h"
32
33	#define INCLUDED_BY_DC
34	#include "dc.h"
35
36	#undef SEVERITY_ERROR
37	#include <winerror.h>
38
39	#ifndef DEVESC_SETPS
40	#define DEVESC_SETPS 49149L
41	#endif
42
43	#define FLOAT_TO_FIXED(x) ((FIXED) ((x) * 65536.0))
44	#define MICRO_HPS_TO_HDC(x) ((x) & 0xFFFFFFFE)
45
46	#define PMRECT_FROM_WINRECT( pmRect, winRect ) \
47	{ \
48	(pmRect).xLeft = (winRect).left; \
49	(pmRect).yBottom = (winRect).bottom; \
50	(pmRect).xRight = (winRect).right; \
51	(pmRect).yTop = (winRect).top; \
52	}
53
54	#define WINRECT_FROM_PMRECT( winRect, pmRect ) \
55	{ \
56	(winRect).left = (pmRect).xLeft; \
57	(winRect).top = (pmRect).yTop; \
58	(winRect).right = (pmRect).xRight; \
59	(winRect).bottom = (pmRect).yBottom; \
60	}
61
62	#define MEM_HPS_MAX 768
63
64	const XFORM_W XFORMIdentity = { 1.0, 0.0, 0.0, 1.0, 0, 0 };
65	const MATRIXLF matrixlfIdentity = { 0x10000, 0, 0, 0, 0x10000, 0, 0, 0, 0};
66
67	BOOL setPageXForm(Win32BaseWindow *wnd, pDCData pHps);
68	BOOL changePageXForm(Win32BaseWindow *wnd, pDCData pHps, PPOINTL pValue, int x, int y, PPOINTL pPrev);
69	LONG clientHeight(Win32BaseWindow *wnd, HWND hwnd, pDCData pHps);
70
71	//******************************************************************************
72	//******************************************************************************
73	void TestWideLine (pDCData pHps)
74	{
75	const LOGPEN_W *pLogPen;
76
77	pHps->isWideLine = FALSE;
78	pLogPen = pHps->penIsExtPen ?
79	&(pHps->lastPenObject->ExtPen.logpen) :
80	&(pHps->lastPenObject->Pen.logpen);
81
82	if (((pLogPen->lopnStyle & PS_STYLE_MASK_W) != PS_NULL_W) &&
83	(pLogPen->lopnWidth.x > 0))
84	{
85	POINTL aptl[2] = { 0, 0, pLogPen->lopnWidth.x, pLogPen->lopnWidth.x };
86
87	GpiConvert(pHps->hps, CVTC_WORLD, CVTC_DEVICE, 2, aptl);
88
89	ULONG dx = abs(aptl[0].x - aptl[1].x);
90	ULONG dy = abs(aptl[0].y - aptl[1].y);
91
92	pHps->isWideLine = (dx > 1) \|\| (dy > 1);
93	}
94	}
95	//******************************************************************************
96	//******************************************************************************
97	void Calculate1PixelDelta(pDCData pHps)
98	{
99	POINTL aptl[2] = {0, 0, 1, 1};
100
101	GpiConvert(pHps->hps, CVTC_DEVICE, CVTC_WORLD, 2, aptl);
102	pHps->worldYDeltaFor1Pixel = (int)(aptl[1].y - aptl[0].y);
103	pHps->worldXDeltaFor1Pixel = (int)(aptl[1].x - aptl[0].x); // 171182
104	}
105	//******************************************************************************
106	//******************************************************************************
107	int setMapMode(Win32BaseWindow *wnd, pDCData pHps, int mode)
108	{
109	int prevMode = 0;
110	ULONG flOptions;
111
112	switch (mode)
113	{
114	case MM_HIENGLISH_W : flOptions = PU_HIENGLISH; break;
115	case MM_LOENGLISH_W : flOptions = PU_LOENGLISH; break;
116	case MM_HIMETRIC_W : flOptions = PU_HIMETRIC ; break;
117	case MM_LOMETRIC_W : flOptions = PU_LOMETRIC ; break;
118	case MM_TEXT_W : flOptions = PU_PELS ; break;
119	case MM_TWIPS_W : flOptions = PU_TWIPS ; break;
120	case MM_ANISOTROPIC_W: flOptions = PU_PELS ; break;
121	case MM_ISOTROPIC_W : flOptions = PU_LOMETRIC ; break;
122	default:
123	O32_SetLastError (ERROR_INVALID_PARAMETER);
124	return FALSE;
125	}
126
127	prevMode = pHps->MapMode; /* store previous mode */
128	pHps->MapMode = mode;
129
130	if (mode == MM_TEXT_W)
131	{
132	pHps->viewportXExt =
133	pHps->viewportYExt = 1.0;
134	pHps->windowExt.cx =
135	pHps->windowExt.cy = 1;
136	}
137	else if (mode != MM_ANISOTROPIC_W)
138	{
139	RECTL rectl;
140	SIZEL sizel;
141	ULONG data[3];
142
143	data[0] = flOptions;
144	data[1] = data[2] = 0;
145
146	if (DevEscape(pHps->hdc ? pHps->hdc : pHps->hps, DEVESC_SETPS, 12, (PBYTE)data, 0, 0) == DEVESC_ERROR)
147	{
148	O32_SetLastError (ERROR_INVALID_PARAMETER);
149	return 0;
150	}
151
152	GpiQueryPageViewport(pHps->hps, &rectl);
153	pHps->viewportXExt = (double)rectl.xRight;
154	pHps->viewportYExt = -(double)rectl.yTop;
155
156	GreGetPageUnits(pHps->hdc? pHps->hdc : pHps->hps, &sizel);
157	pHps->windowExt.cx = sizel.cx;
158	pHps->windowExt.cy = sizel.cy;
159
160	data[0] = PU_PELS;
161	DevEscape(pHps->hdc ? pHps->hdc : pHps->hps, DEVESC_SETPS, 12, (PBYTE)data, 0, 0);
162	}
163
164	if (((prevMode != MM_ISOTROPIC_W) && (prevMode != MM_ANISOTROPIC_W)) &&
165	((mode == MM_ISOTROPIC_W) \|\| (mode == MM_ANISOTROPIC_W)))
166	{
167	if (pHps->lWndXExtSave && pHps->lWndYExtSave)
168	{
169	changePageXForm (wnd, pHps, (PPOINTL)&pHps->windowExt,
170	pHps->lWndXExtSave, pHps->lWndYExtSave, NULL );
171	pHps->lWndXExtSave = pHps->lWndYExtSave = 0;
172	}
173	if (pHps->lVwpXExtSave && pHps->lVwpYExtSave)
174	{
175	changePageXForm (wnd, pHps, NULL,
176	pHps->lVwpXExtSave, pHps->lVwpYExtSave, NULL );
177	pHps->lVwpXExtSave = pHps->lVwpYExtSave = 0;
178	}
179	}
180
181	setPageXForm(wnd, pHps);
182
183	return prevMode;
184	}
185	//******************************************************************************
186	//******************************************************************************
187	BOOL setPageXForm(Win32BaseWindow *wnd, pDCData pHps)
188	{
189	MATRIXLF mlf;
190	BOOL rc = TRUE;
191
192	pHps->height = clientHeight(wnd, 0, pHps) - 1;
193
194	double xScale = pHps->viewportXExt / (double)pHps->windowExt.cx;
195	double yScale = pHps->viewportYExt / (double)pHps->windowExt.cy;
196
197	mlf.fxM11 = FLOAT_TO_FIXED(xScale);
198	mlf.fxM12 = 0;
199	mlf.lM13 = 0;
200	mlf.fxM21 = 0;
201	mlf.fxM22 = FLOAT_TO_FIXED(yScale);
202	mlf.lM23 = 0;
203	mlf.lM31 = pHps->viewportOrg.x - (LONG)(pHps->windowOrg.x * xScale);
204	mlf.lM32 = pHps->viewportOrg.y - (LONG)(pHps->windowOrg.y * yScale);
205
206	pHps->isLeftLeft = mlf.fxM11 >= 0;
207	pHps->isTopTop = mlf.fxM22 >= 0;
208
209	BOOL bEnableYInversion = FALSE;
210	if ((mlf.fxM22 > 0) \|\|
211	((pHps->graphicsMode == GM_ADVANCED_W) &&
212	((pHps->MapMode == MM_ANISOTROPIC_W) \|\|
213	(pHps->MapMode == MM_ISOTROPIC_W))))
214	{
215	bEnableYInversion = TRUE;
216	}
217	else
218	{
219	bEnableYInversion = FALSE;
220	mlf.lM32 = pHps->HPStoHDCInversionHeight + pHps->height - mlf.lM32;
221	mlf.fxM22 = -mlf.fxM22;
222	}
223
224	if (!pHps->isMetaPS)
225	// if ((!pHps->isMetaPS) \|\|
226	// (pHps->pMetaFileObject && pHps->pMetaFileObject->isEnhanced()))
227	rc = GpiSetDefaultViewMatrix(pHps->hps, 8, &mlf, TRANSFORM_REPLACE);
228
229	if (bEnableYInversion)
230	GpiEnableYInversion(pHps->hps, pHps->height + pHps->HPStoHDCInversionHeight);
231	else
232	GpiEnableYInversion(pHps->hps, 0);
233
234	TestWideLine(pHps);
235	Calculate1PixelDelta(pHps);
236	return rc;
237	}
238	//******************************************************************************
239	//******************************************************************************
240	BOOL changePageXForm(Win32BaseWindow *wnd, pDCData pHps, PPOINTL pValue, int x, int y, PPOINTL pPrev)
241	{
242	BOOL result = FALSE;
243
244	if (pValue)
245	{
246	if (pPrev)
247	pPrev = pValue;
248
249	if ((pValue->x == x) && (pValue->y == y)) {
250	return TRUE;
251	}
252	pValue->x = x;
253	pValue->y = y;
254	}
255	else
256	{
257	if (pPrev)
258	{
259	pPrev->x = (int)pHps->viewportXExt;
260	pPrev->y = (int)pHps->viewportYExt;
261	}
262	pHps->viewportXExt = (double)x;
263	pHps->viewportYExt = (double)y;
264	}
265
266	if (pHps->MapMode == MM_ISOTROPIC_W)
267	{
268	double xExt = fabs(pHps->viewportXExt);
269	double yExt = fabs(pHps->viewportYExt);
270	double sf = fabs((double)pHps->windowExt.cx / pHps->windowExt.cy);
271
272	if (xExt > (yExt * sf))
273	{
274	xExt = yExt * sf;
275
276	if ((double)LONG_MAX <= xExt) return (result);
277
278	if (pHps->viewportXExt < 0.0)
279	pHps->viewportXExt = -xExt;
280	else
281	pHps->viewportXExt = xExt;
282	}
283	else
284	{
285	yExt = xExt / sf;
286
287	if ((double)LONG_MAX <= yExt) return (result);
288
289	if (pHps->viewportYExt < 0.0)
290	pHps->viewportYExt = -yExt;
291	else
292	pHps->viewportYExt = yExt;
293	}
294	}
295	result = setPageXForm(wnd, pHps);
296
297	return (result);
298	}
299	//******************************************************************************
300	//******************************************************************************
301	LONG clientHeight(Win32BaseWindow *wnd, HWND hwnd, pDCData pHps)
302	{
303	if ((hwnd == 0) && (pHps != 0))
304	hwnd = pHps->hwnd;
305
306	if ((hwnd != 0) \|\| (pHps == 0))
307	{
308	if (wnd)
309	return (wnd->getClientHeight());
310	else
311	return OSLibQueryScreenHeight();
312	}
313	else if (pHps->bitmapHandle)
314	{
315	return pHps->bitmapHeight;
316	}
317	else if (pHps->isMetaPS)
318	{
319	return 0;
320	}
321	else if (pHps->isPrinter)
322	{
323	return pHps->printPageHeight;
324	}
325	else
326	{
327	return MEM_HPS_MAX;
328	}
329	}
330	//******************************************************************************
331	//******************************************************************************
332	BOOL isYup (pDCData pHps)
333	{
334	if (((pHps->windowExt.cy < 0) && (pHps->viewportYExt > 0.0)) \|\|
335	((pHps->windowExt.cy > 0) && (pHps->viewportYExt < 0.0)))
336	{
337	if ((pHps->graphicsMode == GM_COMPATIBLE_W) \|\|
338	((pHps->graphicsMode == GM_ADVANCED_W) && (pHps->xform.eM22 >= 0.0)))
339	return TRUE;
340	}
341	else
342	{
343	if ((pHps->graphicsMode == GM_ADVANCED_W) && (pHps->xform.eM22 < 0.0))
344	return TRUE;
345	}
346	return FALSE;
347	}
348	//******************************************************************************
349	//******************************************************************************
350	INT revertDy (Win32BaseWindow *wnd, INT dy)
351	{
352	//SvL: Hack for memory.exe (doesn't get repainted properly otherwise)
353	// if (wnd->isOwnDC() && wnd->getOwnDC())
354	if (wnd->isOwnDC())
355	{
356	pDCData pHps = (pDCData)GpiQueryDCData (wnd->getOwnDC());
357
358	if (pHps != NULLHANDLE)
359	if (!isYup (pHps))
360	dy = -dy;
361	}
362	else
363	{
364	dy = -dy;
365	}
366	return (dy);
367	}
368	//******************************************************************************
369	//******************************************************************************
370	HDC sendEraseBkgnd (Win32BaseWindow *wnd)
371	{
372	BOOL erased;
373	HWND hwnd;
374	HDC hdc;
375	HPS hps;
376	HRGN hrgnUpdate, hrgnOld, hrgnClip, hrgnCombined;
377	RECTL rectl = { 1, 1, 2, 2 };
378
379	hwnd = wnd->getOS2WindowHandle();
380	hps = WinGetPS(hwnd);
381
382	hrgnUpdate = GpiCreateRegion (hps, 1, &rectl);
383	WinQueryUpdateRegion (hwnd, hrgnUpdate);
384	hrgnClip = GpiQueryClipRegion (hps);
385
386	if (hrgnClip == NULLHANDLE)
387	{
388	GpiSetClipRegion (hps, hrgnUpdate, &hrgnOld);
389	}
390	else
391	{
392	hrgnCombined = GpiCreateRegion (hps, 1, &rectl);
393	GpiCombineRegion (hps, hrgnCombined, hrgnClip, hrgnUpdate, CRGN_AND);
394	GpiSetClipRegion (hps, hrgnCombined, &hrgnOld);
395	GpiDestroyRegion (hps, hrgnUpdate);
396	GpiDestroyRegion (hps, hrgnClip);
397	}
398	if (hrgnOld != NULLHANDLE)
399	GpiDestroyRegion (hps, hrgnOld);
400
401	hdc = HPSToHDC (hwnd, hps, NULL, NULL);
402
403	erased = wnd->MsgEraseBackGround (hdc);
404
405	DeleteHDC (hdc);
406	WinReleasePS (hps);
407
408	return erased;
409	}
410	//******************************************************************************
411	//******************************************************************************
412	void releaseOwnDC (HDC hps)
413	{
414	pDCData pHps = (pDCData)GpiQueryDCData ((HPS)hps);
415
416	if (pHps) {
417	if (pHps->hrgnHDC)
418	GpiDestroyRegion (pHps->hps, pHps->hrgnHDC);
419
420	GpiSetBitmap (pHps->hps, NULL);
421	O32_DeleteObject (pHps->nullBitmapHandle);
422	GpiDestroyPS(pHps->hps);
423
424	if (pHps->hdc)
425	DevCloseDC(pHps->hdc);
426
427	// how can a memory chunk allocated by GpiAllocateDCData freed by delete?
428	// delete pHps;
429	}
430	}
431	//******************************************************************************
432	//******************************************************************************
433	HDC WIN32API BeginPaint (HWND hWnd, PPAINTSTRUCT_W lpps)
434	{
435	HWND hwnd = hWnd ? hWnd : HWND_DESKTOP;
436	pDCData pHps = NULLHANDLE;
437	RECTL rect;
438	HPS hPS_ownDC = NULLHANDLE;
439
440	dprintf (("USER32: BeginPaint(%x)", hWnd));
441
442	if ( !lpps )
443	{
444	O32_SetLastError (ERROR_INVALID_PARAMETER);
445	return (HDC)NULLHANDLE;
446	}
447
448	if(hWnd == 0x6800003a) {
449	hwnd = 0x6800003a;
450	}
451	Win32BaseWindow *wnd = Win32BaseWindow::GetWindowFromHandle(hwnd);
452
453	if ((hwnd != HWND_DESKTOP) && wnd->isOwnDC())
454	{
455	hPS_ownDC = wnd->getOwnDC();
456	//SvL: Hack for memory.exe (doesn't get repainted properly otherwise)
457	if(hPS_ownDC) {
458	pHps = (pDCData)GpiQueryDCData(hPS_ownDC);
459	if (!pHps)
460	{
461	O32_SetLastError (ERROR_INVALID_PARAMETER);
462	return (HDC)NULLHANDLE;
463	}
464	}
465	}
466
467	HWND hwndClient = wnd->getOS2WindowHandle();
468	HPS hps = WinBeginPaint(hwndClient, hPS_ownDC, &rect);
469
470	if (!pHps)
471	{
472	HDC hdc = HPSToHDC (hwndClient, hps, NULL, NULL);
473	pHps = (pDCData)GpiQueryDCData(hps);
474	}
475
476	if (hPS_ownDC == 0)
477	setMapMode (wnd, pHps, MM_TEXT_W);
478	else
479	setPageXForm (wnd, pHps);
480
481	pHps->hdcType = TYPE_3;
482	lpps->hdc = (HDC)hps;
483
484	if(!wnd->isSuppressErase()) {
485	wnd->setSuppressErase(TRUE);
486	wnd->setEraseBkgnd (FALSE, !wnd->MsgEraseBackGround(lpps->hdc));
487	}
488	lpps->fErase = wnd->isPSErase();
489
490	if (!hPS_ownDC)
491	{
492	long height = wnd->getClientHeight();
493	rect.yTop = height - rect.yTop;
494	rect.yBottom = height - rect.yBottom;
495	}
496	else
497	{
498	rect.yTop--;
499	rect.yBottom--;
500	GpiConvert(pHps->hps, CVTC_DEVICE, CVTC_WORLD, 2, (PPOINTL)&rect);
501	}
502
503	WINRECT_FROM_PMRECT(lpps->rcPaint, rect);
504
505	O32_SetLastError(0);
506	return (HDC)pHps->hps;
507	}
508	//******************************************************************************
509	//******************************************************************************
510	BOOL WIN32API EndPaint (HWND hwnd, const PAINTSTRUCT_W *pPaint)
511	{
512	dprintf (("USER32: EndPaint(%x)", hwnd));
513
514	if (!pPaint \|\| !pPaint->hdc )
515	return TRUE;
516
517	Win32BaseWindow *wnd = Win32BaseWindow::GetWindowFromHandle(hwnd);
518
519	if (!wnd) goto exit;
520
521	//SvL: Hack for memory.exe (doesn't get repainted properly otherwise)
522	if(wnd->isOwnDC() && wnd->getOwnDC())
523	// if(wnd->isOwnDC())
524	{
525	pDCData pHps = (pDCData)GpiQueryDCData((HPS)pPaint->hdc);
526	if (pHps && (pHps->hdcType == TYPE_3))
527	{
528	WinEndPaint (pHps->hps);
529	}
530	}
531	else
532	{
533	O32_EndPaint (HWND_DESKTOP, pPaint);
534	}
535	wnd->setSuppressErase(FALSE);
536
537	exit:
538	O32_SetLastError(0);
539	return TRUE;
540	}
541	//******************************************************************************
542	//******************************************************************************
543	BOOL WIN32API GetUpdateRect (HWND hwnd, LPRECT pRect, BOOL erase)
544	{
545	if (!hwnd)
546	{
547	O32_SetLastError (ERROR_INVALID_HANDLE);
548	return FALSE;
549	}
550
551	RECTL rectl;
552	Win32BaseWindow *wnd = Win32BaseWindow::GetWindowFromHandle(hwnd);
553
554	if (!wnd)
555	{
556	O32_SetLastError (ERROR_INVALID_HANDLE);
557	return FALSE;
558	}
559
560	BOOL updateRegionExists = WinQueryUpdateRect (wnd->getOS2WindowHandle(), pRect ? &rectl : NULL);
561	if (!pRect) {
562	return (updateRegionExists);
563	}
564
565	if (updateRegionExists)
566	{
567	//CB: for PM empty rect is valid
568	if ((rectl.xLeft == rectl.xRight) \|\| (rectl.yTop == rectl.yBottom)) return FALSE;
569	//SvL: Hack for memory.exe (doesn't get repainted properly otherwise)
570	// if (wnd->isOwnDC() && wnd->getOwnDC())
571	if (wnd->isOwnDC())
572	{
573	pDCData pHps = NULL;
574	pHps = (pDCData)GpiQueryDCData(wnd->getOwnDC());
575	if (!pHps)
576	{
577	O32_SetLastError (ERROR_INVALID_HANDLE);
578	return FALSE;
579	}
580	GpiConvert (pHps->hps, CVTC_DEVICE, CVTC_WORLD, 2, (PPOINTL)&rectl);
581	}
582	else
583	{
584	long height = wnd->getClientHeight();
585	rectl.yTop = height - rectl.yTop;
586	rectl.yBottom = height - rectl.yBottom;
587	}
588
589	if (pRect)
590	WINRECT_FROM_PMRECT (*pRect, rectl);
591
592	if (erase)
593	sendEraseBkgnd (wnd);
594	}
595	else
596	{
597	if (pRect)
598	pRect->left = pRect->top = pRect->right = pRect->bottom = 0;
599	}
600
601	return updateRegionExists;
602	}
603	//******************************************************************************
604	//functions for WM_NCPAINT
605	//******************************************************************************
606	INT SYSTEM GetOS2UpdateRgn(HWND hwnd,HRGN hrgn)
607	{
608	return O32_GetUpdateRgn(hwnd,hrgn,FALSE);
609	}
610	//******************************************************************************
611	//******************************************************************************
612	BOOL SYSTEM GetOS2UpdateRect(HWND hwnd,LPRECT pRect)
613	{
614	RECTL rectl;
615	BOOL updateRegionExists = WinQueryUpdateRect(hwnd,pRect ? &rectl:NULL);
616
617	if (!pRect)
618	return (updateRegionExists);
619
620	if (updateRegionExists)
621	{
622	//CB: for PM empty rect is valid
623	if ((rectl.xLeft == rectl.xRight) \|\| (rectl.yTop == rectl.yBottom)) return FALSE;
624	mapOS2ToWin32Rect(hwnd,(PRECTLOS2)&rectl,pRect);
625	} else
626	pRect->left = pRect->top = pRect->right = pRect->bottom = 0;
627
628	return updateRegionExists;
629	}
630	//******************************************************************************
631	//******************************************************************************
632	int WIN32API GetUpdateRgn (HWND hwnd, HRGN hrgn, BOOL erase)
633	{
634	LONG Complexity;
635
636	Win32BaseWindow *wnd = Win32BaseWindow::GetWindowFromHandle(hwnd);
637
638	if (!wnd)
639	{
640	O32_SetLastError (ERROR_INVALID_HANDLE);
641	return ERROR_W;
642	}
643
644	Complexity = O32_GetUpdateRgn (wnd->getOS2WindowHandle(), hrgn, FALSE);
645	if (erase && (Complexity > NULLREGION_W)) sendEraseBkgnd (wnd);
646
647	return Complexity;
648	}
649	//******************************************************************************
650	// This implementation of GetDCEx supports
651	// DCX_WINDOW
652	// DCX_CACHE
653	// DCX_EXCLUDERGN (complex regions allowed)
654	// DCX_INTERSECTRGN (complex regions allowed)
655	//******************************************************************************
656	HDC WIN32API GetDCEx (HWND hwnd, HRGN hrgn, ULONG flags)
657	{
658	Win32BaseWindow *wnd = NULL;
659	HWND hWindow;
660	BOOL success;
661	pDCData pHps = NULL;
662	HPS hps = NULLHANDLE;
663	BOOL drawingAllowed = TRUE;
664	BOOL isWindowOwnDC;
665	BOOL creatingOwnDC = FALSE;
666	PS_Type psType;
667
668	if (hwnd)
669	{
670	wnd = Win32BaseWindow::GetWindowFromHandle(hwnd);
671	if(wnd == NULL) {
672	dprintf (("ERROR: User32: GetDCEx bad window handle %X!!!!!", hwnd));
673	O32_SetLastError(ERROR_INVALID_WINDOW_HANDLE_W);
674	return 0;
675	}
676	//SvL: Experimental change (doesn't work right)
677	#if 0
678	if(wnd->fHasParentDC() && wnd->getParent()) {
679	wnd = wnd->getParent();
680	}
681	#endif
682	if (flags & DCX_WINDOW_W)
683	hWindow = wnd->getOS2FrameWindowHandle();
684	else
685	hWindow = wnd->getOS2WindowHandle();
686	}
687	else
688	hWindow = HWND_DESKTOP;
689
690	dprintf (("User32: GetDCEx hwnd %x (%x %x) -> wnd %x", hwnd, hrgn, flags, wnd));
691
692	//SvL: Hack for memory.exe (doesn't get repainted properly otherwise)
693	// isWindowOwnDC = (((hWindow == HWND_DESKTOP) ? FALSE : (wnd->isOwnDC() && wnd->getOwnDC()))
694	isWindowOwnDC = (((hWindow == HWND_DESKTOP) ? FALSE : (wnd->isOwnDC()))
695	&& !(flags & DCX_CACHE_W\|DCX_WINDOW_W));
696
697	if (isWindowOwnDC)
698	{
699	hps = wnd->getOwnDC();
700	if (hps)
701	{
702	pDCData pHps = (pDCData)GpiQueryDCData (hps);
703	if (!pHps)
704	goto error;
705
706	setPageXForm (wnd, pHps);
707
708	pHps->hdcType = TYPE_1;
709	return (HDC)hps;
710	}
711	else
712	creatingOwnDC = TRUE;
713	}
714
715	if (isWindowOwnDC)
716	{
717	SIZEL sizel = {0,0};
718	hps = GpiCreatePS (WinQueryAnchorBlock (hWindow),
719	WinOpenWindowDC (hWindow),
720	&sizel, PU_PELS \| GPIT_MICRO \| GPIA_ASSOC );
721	psType = MICRO;
722	}
723	else
724	{
725	if (hWindow == HWND_DESKTOP)
726	hps = WinGetScreenPS (hWindow);
727	else
728	hps = WinGetPS (hWindow);
729
730	psType = MICRO_CACHED;
731	}
732
733	if (!hps)
734	goto error;
735
736	HPSToHDC (hWindow, hps, NULL, NULL);
737	pHps = (pDCData)GpiQueryDCData (hps);
738
739	if ((flags & DCX_EXCLUDERGN_W) \|\| (flags & DCX_INTERSECTRGN_W))
740	{
741	ULONG BytesNeeded;
742	PRGNDATA_W RgnData;
743	PRECT pr;
744	int i;
745	RECTL rectl;
746
747	if (!hrgn)
748	goto error;
749
750	BytesNeeded = O32_GetRegionData (hrgn, 0, NULL);
751	RgnData = (PRGNDATA_W)_alloca (BytesNeeded);
752	if (RgnData == NULL)
753	goto error;
754	O32_GetRegionData (hrgn, BytesNeeded, RgnData);
755
756	i = RgnData->rdh.nCount;
757	pr = (PRECT)(RgnData->Buffer);
758
759	success = TRUE;
760	if (flags & DCX_EXCLUDERGN_W)
761	{
762	#if 0 //CB: todo
763	for (; (i > 0) && success; i--, pr++) {
764	LONG y = pr->yBottom;
765
766	pr->yBottom = height - pr->yTop;
767	pr->yTop = height - y;
768	success &= GpiExcludeClipRectangle (pHps->hps, pr);
769	}
770	#endif
771	} else //DCX_INTERSECTRGN_W
772	{
773	O32_SelectClipRgn(pHps->hps,hrgn); //CB: works so far
774	}
775	if (!success)
776	goto error;
777	}
778
779	if (creatingOwnDC)
780	wnd->setOwnDC ((HDC)hps);
781
782	pHps->psType = psType;
783	pHps->hdcType = TYPE_1;
784	GpiSetDrawControl (hps, DCTL_DISPLAY, drawingAllowed ? DCTL_ON : DCTL_OFF);
785
786	return (HDC)pHps->hps;
787
788	error:
789	/* Something went wrong; clean up
790	*/
791	if (pHps)
792	{
793	if (pHps->hps)
794	{
795	if(pHps->psType == MICRO_CACHED)
796	WinReleasePS(pHps->hps);
797	else
798	GpiDestroyPS(pHps->hps);
799	}
800
801	if (pHps->hdc) DevCloseDC(pHps->hdc);
802	if (pHps->hrgnHDC) GpiDestroyRegion(pHps->hps, pHps->hrgnHDC);
803
804	O32_DeleteObject (pHps->nullBitmapHandle);
805	}
806	O32_SetLastError (ERROR_INVALID_PARAMETER);
807	return NULL;
808	}
809	//******************************************************************************
810	//******************************************************************************
811	HDC WIN32API GetDC (HWND hwnd)
812	{
813	return GetDCEx (hwnd, NULL, 0);
814	}
815	//******************************************************************************
816	//******************************************************************************
817	HDC WIN32API GetWindowDC (HWND hwnd)
818	{
819	return GetDCEx (hwnd, NULL, DCX_WINDOW_W);
820	}
821	//******************************************************************************
822	//******************************************************************************
823	int WIN32API ReleaseDC (HWND hwnd, HDC hdc)
824	{
825	BOOL isOwnDC = FALSE;
826	int rc;
827
828	if (hwnd)
829	{
830	Win32BaseWindow *wnd = Win32BaseWindow::GetWindowFromHandle (hwnd);
831	//SvL: Hack for memory.exe (doesn't get repainted properly otherwise)
832	// isOwnDC = wnd->isOwnDC() && wnd->getOwnDC();
833	isOwnDC = wnd->isOwnDC() && (wnd->getOwnDC() == hdc);
834	}
835	if (isOwnDC)
836	rc = TRUE;
837	else
838	rc = O32_ReleaseDC (0, hdc);
839
840	dprintf(("ReleaseDC %x %x", hwnd, hdc));
841	return (rc);
842	}
843	//******************************************************************************
844	//******************************************************************************
845	BOOL WIN32API UpdateWindow (HWND hwnd)
846	{
847	if (!hwnd)
848	return FALSE;
849
850	Win32BaseWindow *wnd = Win32BaseWindow::GetWindowFromHandle (hwnd);
851
852	dprintf (("User32: UpdateWindow hwnd %x -> wnd %x", hwnd, wnd));
853
854	#if 0
855	if (WinQueryUpdateRect (wnd->getOS2WindowHandle(), NULL))
856	sendEraseBkgnd (wnd);
857	#endif
858
859	WinUpdateWindow(wnd->getOS2FrameWindowHandle());
860
861	return (TRUE);
862	}
863	//******************************************************************************
864	// This implementation of RedrawWindow supports
865	// RDW_ERASE
866	// RDW_NOERASE
867	// RDW_INTERNALPAINT
868	// RDW_NOINTERNALPAINT
869	// RDW_INVALIDATE
870	// RDW_VALIDATE
871	// RDW_ERASENOW
872	// RDW_UPDATENOW
873	//******************************************************************************
874	BOOL WIN32API RedrawWindow(HWND hwnd, const RECT* pRect, HRGN hrgn, DWORD redraw)
875	{
876	Win32BaseWindow *wnd;
877
878	if (redraw & (RDW_FRAME_W \| RDW_NOFRAME_W))
879	{
880	O32_SetLastError (ERROR_NOT_SUPPORTED);
881	return FALSE;
882	}
883
884	if (hwnd == NULLHANDLE)
885	{
886	#if 1
887	// Don't do this for now (causes lots of desktop repaints in WordPad)
888	O32_SetLastError (ERROR_INVALID_PARAMETER);
889	return FALSE;
890	#else
891	hwnd = HWND_DESKTOP;
892	wnd = Win32BaseWindow::GetWindowFromOS2Handle(OSLIB_HWND_DESKTOP);
893
894	if (!wnd)
895	{
896	dprintf(("USER32:dc: RedrawWindow can't find desktop window %08xh\n",
897	hwnd));
898	O32_SetLastError (ERROR_INVALID_PARAMETER);
899	return FALSE;
900	}
901	#endif
902	}
903	else
904	{
905	wnd = Win32BaseWindow::GetWindowFromHandle (hwnd);
906
907	if (!wnd)
908	{
909	dprintf(("USER32:dc: RedrawWindow can't find window %08xh\n",
910	hwnd));
911	O32_SetLastError (ERROR_INVALID_PARAMETER);
912	return FALSE;
913	}
914	hwnd = wnd->getOS2WindowHandle();
915	}
916
917	BOOL IncludeChildren = redraw & RDW_ALLCHILDREN_W ? TRUE : FALSE;
918	BOOL success = TRUE;
919	HPS hpsTemp = NULLHANDLE;
920	HRGN hrgnTemp = NULLHANDLE;
921	RECTL rectl;
922
923	if (redraw & RDW_UPDATENOW_W) redraw &= ~RDW_ERASENOW_W;
924
925	if (redraw & RDW_NOERASE_W)
926	wnd->setEraseBkgnd (FALSE);
927
928	//SvL: Test
929	// if (redraw & RDW_UPDATENOW_W)
930	// wnd->setSuppressErase (FALSE);
931	// else if (redraw & RDW_ERASENOW_W)
932	// wnd->setSuppressErase (FALSE);
933
934	if (hrgn)
935	{
936	ULONG BytesNeeded;
937	PRGNDATA_W RgnData;
938	PRECTL pr;
939	int i;
940	LONG height = wnd ? wnd->getClientHeight() : OSLibQueryScreenHeight();
941
942	if (!hrgn)
943	goto error;
944
945	BytesNeeded = O32_GetRegionData (hrgn, 0, NULL);
946	RgnData = (PRGNDATA_W)_alloca (BytesNeeded);
947	if (RgnData == NULL)
948	goto error;
949	O32_GetRegionData (hrgn, BytesNeeded, RgnData);
950
951	pr = (PRECTL)(RgnData->Buffer);
952	for (i = RgnData->rdh.nCount; i > 0; i--, pr++) {
953	LONG temp = pr->yTop;
954	pr->yTop = height - pr->yBottom;
955	pr->yBottom = height - temp;
956	}
957
958	hpsTemp = WinGetScreenPS (HWND_DESKTOP);
959	hrgnTemp = GpiCreateRegion (hpsTemp, RgnData->rdh.nCount, (PRECTL)(RgnData->Buffer));
960	if (!hrgnTemp) goto error;
961	}
962	else if (pRect)
963	{
964	LONG height = wnd ? wnd->getClientHeight() : OSLibQueryScreenHeight();
965
966	PMRECT_FROM_WINRECT (rectl, *pRect);
967	rectl.yTop = height - rectl.yTop;
968	rectl.yBottom = height - rectl.yBottom;
969	}
970
971	if (redraw & RDW_INVALIDATE_W)
972	{
973	if (redraw & RDW_ERASE_W)
974	wnd->setEraseBkgnd (TRUE, TRUE);
975
976	if (!pRect && !hrgn)
977	success = WinInvalidateRect (hwnd, NULL, IncludeChildren);
978	else if (hrgn)
979	success = WinInvalidateRegion (hwnd, hrgnTemp, IncludeChildren);
980	else
981	success = WinInvalidateRect (hwnd, &rectl, IncludeChildren);
982	if (!success) goto error;
983	}
984	else if (redraw & RDW_VALIDATE_W)
985	{
986	if (WinQueryUpdateRect (hwnd, NULL))
987	{
988	if (!pRect && !hrgn)
989	success = WinValidateRect (hwnd, NULL, IncludeChildren);
990	else if (hrgn)
991	success = WinValidateRegion (hwnd, hrgnTemp, IncludeChildren);
992	else
993	success = WinValidateRect (hwnd, &rectl, IncludeChildren);
994	if (!success) goto error;
995	}
996	}
997
998	if (WinQueryUpdateRect (hwnd, NULL))
999	{
1000	if (redraw & RDW_UPDATENOW_W)
1001	wnd->MsgPaint (0, FALSE);
1002
1003	else if ((redraw & RDW_ERASE_W) && (redraw & RDW_ERASENOW_W))
1004	wnd->setEraseBkgnd (FALSE, !sendEraseBkgnd (wnd));
1005	}
1006	else if ((redraw & RDW_INTERNALPAINT_W) && !(redraw & RDW_INVALIDATE_W))
1007	{
1008	if (redraw & RDW_UPDATENOW_W)
1009	wnd->MsgPaint (0, FALSE);
1010	// else
1011	// WinPostMsg( hwnd, WM_VIRTUAL_INTERNALPAINT, MPVOID, MPVOID );
1012	}
1013
1014	error:
1015	/* clean up */
1016	if (hrgnTemp)
1017	GpiDestroyRegion (hpsTemp, hrgnTemp);
1018
1019	if (hpsTemp)
1020	WinReleasePS (hpsTemp);
1021
1022	//SvL: Test
1023	// if ((redraw & RDW_INVALIDATE_W) == 0)
1024	// wnd->setSuppressErase (FALSE);
1025	// else if ((redraw & RDW_ERASENOW_W) == RDW_ERASENOW_W)
1026	// wnd->setSuppressErase (TRUE);
1027
1028	if (!success)
1029	O32_SetLastError (ERROR_INVALID_PARAMETER);
1030
1031	return (success);
1032	}
1033	//******************************************************************************
1034	//******************************************************************************
1035	BOOL WIN32API InvalidateRect (HWND hwnd, const RECT *pRect, BOOL erase)
1036	{
1037	BOOL result;
1038
1039	result = RedrawWindow (hwnd, pRect, NULLHANDLE,
1040	RDW_ALLCHILDREN_W \| RDW_INVALIDATE_W \|
1041	(erase ? RDW_ERASE_W : 0) \|
1042	(hwnd == NULLHANDLE ? RDW_UPDATENOW_W : 0));
1043	return (result);
1044	}
1045	//******************************************************************************
1046	//******************************************************************************
1047	BOOL WIN32API InvalidateRgn (HWND hwnd, HRGN hrgn, BOOL erase)
1048	{
1049	BOOL result;
1050
1051	result = RedrawWindow (hwnd, NULL, hrgn,
1052	RDW_ALLCHILDREN_W \| RDW_INVALIDATE_W \|
1053	(erase ? RDW_ERASE_W : 0) \|
1054	(hwnd == NULLHANDLE ? RDW_UPDATENOW_W : 0));
1055	return (result);
1056	}
1057	//******************************************************************************
1058	//******************************************************************************
1059	BOOL setPMRgnIntoWinRgn (HRGN hrgnPM, HRGN hrgnWin, LONG height)
1060	{
1061	BOOL rc;
1062	HPS hps = WinGetScreenPS (HWND_DESKTOP);
1063	RGNRECT rgnRect;
1064	rgnRect.ircStart = 1;
1065	rgnRect.crc = 0;
1066	rgnRect.ulDirection = RECTDIR_LFRT_TOPBOT; // doesn't make a difference because we're getting them all
1067
1068	rc = GpiQueryRegionRects (hps, hrgnPM, NULL, &rgnRect, NULL);
1069
1070	if (rc && (rgnRect.crcReturned > 0))
1071	{
1072	PRECTL Rcls = new RECTL[rgnRect.crcReturned];
1073	PRECTL pRcl = Rcls;
1074
1075	if (Rcls != NULL)
1076	{
1077	rgnRect.crc = rgnRect.crcReturned;
1078	rc = GpiQueryRegionRects (hps, hrgnPM, NULL, &rgnRect, Rcls);
1079
1080	rc = O32_SetRectRgn (hrgnWin, pRcl->xLeft,
1081	pRcl->xRight,
1082	height - pRcl->yTop,
1083	height - pRcl->yBottom);
1084
1085	if (rgnRect.crcReturned > 1)
1086	{
1087	int i;
1088	HRGN temp;
1089	temp = O32_CreateRectRgn (0, 0, 1, 1);
1090
1091	for (i = 1, pRcl++; rc && (i < rgnRect.crcReturned); i++, pRcl++)
1092	{
1093	rc = O32_SetRectRgn (temp, pRcl->xLeft,
1094	pRcl->xRight,
1095	height - pRcl->yTop,
1096	height - pRcl->yBottom);
1097	rc &= O32_CombineRgn (hrgnWin, hrgnWin, temp, RGN_OR_W);
1098	}
1099	O32_DeleteObject (temp);
1100	}
1101	delete[] Rcls;
1102	}
1103	else
1104	{
1105	rc = FALSE;
1106	}
1107	}
1108	else
1109	{
1110	rc = O32_SetRectRgn (hrgnWin, 0, 0, 0, 0);
1111	}
1112
1113	WinReleasePS (hps);
1114	return (rc);
1115	}
1116	//******************************************************************************
1117	//******************************************************************************
1118	BOOL WIN32API ScrollDC (HDC hDC, int dx, int dy, const RECT *pScroll,
1119	const RECT *pClip, HRGN hrgnUpdate, LPRECT pRectUpdate)
1120	{
1121	BOOL rc = TRUE;
1122
1123	dprintf (("USER32: ScrollDC"));
1124
1125	if (!hDC)
1126	{
1127	return (FALSE);
1128	}
1129
1130	pDCData pHps = (pDCData)GpiQueryDCData ((HPS)hDC);
1131	HWND hwnd = pHps->hwnd;
1132	Win32BaseWindow *wnd = Win32BaseWindow::GetWindowFromHandle (hwnd);
1133
1134	if ((hwnd == NULLHANDLE) \|\| !wnd)
1135	{
1136	return (FALSE);
1137	}
1138
1139	POINTL ptl[2] = { 0, 0, dx, dy };
1140
1141	GpiConvert (pHps->hps, CVTC_WORLD, CVTC_DEVICE, 2, ptl);
1142	dx = (int)(ptl[1].x - ptl[0].x);
1143	dy = (int)(ptl[1].y - ptl[0].y);
1144
1145	RECTL scrollRect;
1146	RECTL clipRect;
1147
1148	if (pClip)
1149	{
1150	clipRect.xLeft = min (pClip->left, pClip->right);
1151	clipRect.xRight = max (pClip->left, pClip->right);
1152	clipRect.yTop = max (pClip->top, pClip->bottom);
1153	clipRect.yBottom = min (pClip->top, pClip->bottom);
1154
1155	if ((pHps->graphicsMode == GM_COMPATIBLE_W) &&
1156	(clipRect.xLeft != clipRect.xRight) &&
1157	(clipRect.yBottom != clipRect.yTop))
1158	{
1159	if (abs((int)pHps->viewportXExt) <= abs((int)pHps->windowExt.cx))
1160	clipRect.xRight -= abs(pHps->worldXDeltaFor1Pixel);
1161	else
1162	clipRect.xLeft += abs(pHps->worldXDeltaFor1Pixel);
1163
1164	if (abs((int)pHps->viewportYExt) <= abs((int)pHps->windowExt.cy))
1165	clipRect.yTop -= abs(pHps->worldYDeltaFor1Pixel);
1166	else
1167	clipRect.yBottom += abs(pHps->worldYDeltaFor1Pixel);
1168	}
1169	GpiConvert (pHps->hps, CVTC_WORLD, CVTC_DEVICE, 2, (PPOINTL)&clipRect);
1170	if (clipRect.xRight < clipRect.xLeft) {
1171	ULONG temp = clipRect.xLeft;
1172	clipRect.xLeft = clipRect.xRight;
1173	clipRect.xRight = temp;
1174	}
1175	if (clipRect.yTop < clipRect.yBottom) {
1176	ULONG temp = clipRect.yBottom;
1177	clipRect.yBottom = clipRect.yTop;
1178	clipRect.yTop = temp;
1179	}
1180	}
1181
1182	if (pScroll)
1183	{
1184	scrollRect.xLeft = min (pScroll->left, pScroll->right);
1185	scrollRect.xRight = max (pScroll->left, pScroll->right);
1186	scrollRect.yTop = max (pScroll->top, pScroll->bottom);
1187	scrollRect.yBottom = min (pScroll->top, pScroll->bottom);
1188
1189	if ((pHps->graphicsMode == GM_COMPATIBLE_W) &&
1190	(scrollRect.xLeft != scrollRect.xRight) &&
1191	(scrollRect.yBottom != scrollRect.yTop))
1192	{
1193	if (abs((int)pHps->viewportXExt) <= abs((int)pHps->windowExt.cx))
1194	scrollRect.xRight -= abs(pHps->worldXDeltaFor1Pixel);
1195	else
1196	scrollRect.xLeft += abs(pHps->worldXDeltaFor1Pixel);
1197
1198	if (abs((int)pHps->viewportYExt) <= abs((int)pHps->windowExt.cy))
1199	scrollRect.yTop -= abs(pHps->worldYDeltaFor1Pixel);
1200	else
1201	scrollRect.yBottom += abs(pHps->worldYDeltaFor1Pixel);
1202	}
1203	GpiConvert (pHps->hps, CVTC_WORLD, CVTC_DEVICE, 2, (PPOINTL)&scrollRect);
1204	if (scrollRect.xRight < scrollRect.xLeft) {
1205	ULONG temp = scrollRect.xLeft;
1206	scrollRect.xLeft = scrollRect.xRight;
1207	scrollRect.xRight = temp;
1208	}
1209	if (scrollRect.yTop < scrollRect.yBottom) {
1210	ULONG temp = scrollRect.yBottom;
1211	scrollRect.yBottom = scrollRect.yTop;
1212	scrollRect.yTop = temp;
1213	}
1214	}
1215	RECTL rectlUpdate;
1216	HRGN hrgn;
1217
1218	LONG lComplexity = WinScrollWindow (hwnd, dx, dy, (pScroll) ? &scrollRect : NULL, (pClip) ? &clipRect : NULL, hrgn, &rectlUpdate, 0);
1219	if (lComplexity == RGN_ERROR)
1220	{
1221	return (FALSE);
1222	}
1223
1224	RECT winRectUpdate;
1225	LONG height = wnd->getClientHeight();
1226
1227	winRectUpdate.left = rectlUpdate.xLeft;
1228	winRectUpdate.right = rectlUpdate.xRight;
1229	winRectUpdate.top = height - rectlUpdate.yTop;
1230	winRectUpdate.bottom = height - rectlUpdate.yBottom;
1231
1232	if (pRectUpdate)
1233	*pRectUpdate = winRectUpdate;
1234
1235	if (hrgnUpdate)
1236	rc = setPMRgnIntoWinRgn (hrgn, hrgnUpdate, height);
1237
1238	return (rc);
1239	}
1240	//******************************************************************************
1241	//******************************************************************************
1242	#if 1
1243	BOOL WIN32API ScrollWindow(HWND hwnd, int dx, int dy, const RECT pScroll, const RECT pClip)
1244	{
1245	Win32BaseWindow *window;
1246	APIRET rc;
1247	RECTL clientRect;
1248	RECTL scrollRect;
1249	RECTL clipRect;
1250	PRECT pClientRect;
1251	PRECTL pScrollRect = NULL;
1252	PRECTL pClipRect = NULL;
1253	ULONG scrollFlags = SW_INVALIDATERGN;
1254
1255	window = Win32BaseWindow::GetWindowFromHandle(hwnd);
1256	if(!window) {
1257	dprintf(("ScrollWindow, window %x not found", hwnd));
1258	return 0;
1259	}
1260	dprintf(("ScrollWindow %x %d %d %x %x", hwnd, dx, dy, pScroll, pClip));
1261	pClientRect = window->getClientRectPtr();
1262	clientRect.xLeft = 0;
1263	clientRect.yBottom = 0;
1264	clientRect.xRight = pClientRect->right - pClientRect->left;
1265	clientRect.yTop = pClientRect->bottom - pClientRect->top;
1266	if(pScroll) {
1267	mapWin32ToOS2Rect(window,(RECT *)pScroll, (PRECTLOS2)&scrollRect);
1268	pScrollRect = &scrollRect;
1269
1270	//Scroll rectangle relative to client area
1271	WinIntersectRect ((HAB) 0, pScrollRect, pScrollRect, &clientRect);
1272	}
1273	else scrollFlags \|= SW_SCROLLCHILDREN;
1274
1275	if(pClip) {
1276	mapWin32ToOS2Rect(window,(RECT *)pClip, (PRECTLOS2)&clipRect);
1277	pClipRect = &clipRect;
1278
1279	//Clip rectangle relative to client area
1280	WinIntersectRect ((HAB) 0, pClipRect, pClipRect, &clientRect);
1281	}
1282
1283	dy = revertDy (window, dy);
1284
1285	rc = WinScrollWindow(window->getOS2WindowHandle(), dx, dy,
1286	pScrollRect, pClipRect, NULLHANDLE,
1287	NULL, scrollFlags);
1288
1289	return (rc != RGN_ERROR);
1290	}
1291	#else
1292	BOOL WIN32API ScrollWindow(HWND hwnd, int dx, int dy, const RECT pScroll, const RECT pClip)
1293	{
1294	Win32BaseWindow *window;
1295	APIRET rc;
1296	RECTL clientRect;
1297	RECTL scrollRect;
1298	RECTL clipRect;
1299	PRECTL pScrollRect = NULL;
1300	PRECTL pClipRect = NULL;
1301	ULONG scrollFlags = SW_INVALIDATERGN;
1302
1303	window = Win32BaseWindow::GetWindowFromHandle(hwnd);
1304	if(!window) {
1305	dprintf(("ScrollWindow, window %x not found", hwnd));
1306	return 0;
1307	}
1308	dprintf(("ScrollWindow %x %d %d %x %x", hwnd, dx, dy, pScroll, pClip));
1309	mapWin32ToOS2Rect(window,window->getClientRectPtr(),(PRECTLOS2)&clientRect);
1310	#if 0
1311	//Rectangle could be relative to parent window, so fix this
1312	if(clientRect.yBottom != 0) {
1313	clientRect.yTop -= clientRect.yBottom;
1314	clientRect.yBottom = 0;
1315	}
1316	if(clientRect.xLeft != 0) {
1317	clientRect.xRight -= clientRect.xLeft;
1318	clientRect.xLeft = 0;
1319	}
1320	#endif
1321	if(pScroll) {
1322	mapWin32ToOS2Rect(window,(RECT *)pScroll, (PRECTLOS2)&scrollRect);
1323	pScrollRect = &scrollRect;
1324
1325	//Scroll rectangle relative to client area
1326	pScrollRect->xLeft += clientRect.xLeft;
1327	pScrollRect->xRight += clientRect.xLeft;
1328	pScrollRect->yTop += clientRect.yBottom;
1329	pScrollRect->yBottom += clientRect.yBottom;
1330	WinIntersectRect ((HAB) 0, pScrollRect, pScrollRect, &clientRect);
1331	}
1332	else scrollFlags \|= SW_SCROLLCHILDREN;
1333
1334	if(pClip) {
1335	mapWin32ToOS2Rect(window,(RECT *)pClip, (PRECTLOS2)&clipRect);
1336	pClipRect = &clipRect;
1337
1338	//Clip rectangle relative to client area
1339	pClipRect->xLeft += clientRect.xLeft;
1340	pClipRect->xRight += clientRect.xLeft;
1341	pClipRect->yTop += clientRect.yBottom;
1342	pClipRect->yBottom += clientRect.yBottom;
1343	WinIntersectRect ((HAB) 0, pClipRect, pClipRect, &clientRect);
1344	}
1345
1346	dy = revertDy (window, dy);
1347
1348	rc = WinScrollWindow(window->getOS2WindowHandle(), dx, dy,
1349	pScrollRect, pClipRect, NULLHANDLE,
1350	NULL, scrollFlags);
1351
1352	return (rc != RGN_ERROR);
1353	}
1354	#endif
1355	//******************************************************************************
1356	//******************************************************************************
1357	INT WIN32API ScrollWindowEx(HWND hwnd, int dx, int dy, const RECT pScroll, const RECT pClip,
1358	HRGN hrgnUpdate, PRECT pRectUpdate, UINT scrollFlag)
1359	{
1360	Win32BaseWindow *window;
1361	APIRET rc;
1362	RECTL scrollRect;
1363	RECTL clipRect;
1364	ULONG scrollFlags = 0;
1365	int regionType = ERROR_W;
1366
1367	window = Win32BaseWindow::GetWindowFromHandle(hwnd);
1368	if(!window) {
1369	dprintf(("ScrollWindowEx, window %x not found", hwnd));
1370	return 0;
1371	}
1372
1373	dprintf(("ScrollWindowEx %x %d %d %x %x", hwnd, dx, dy, pScroll, pClip));
1374
1375	dy = revertDy (window, dy);
1376
1377	if (scrollFlag & SW_INVALIDATE_W) scrollFlags \|= SW_INVALIDATERGN;
1378	if (scrollFlag & SW_SCROLLCHILDREN_W) scrollFlags \|= SW_SCROLLCHILDREN;
1379
1380	if(pScroll) mapWin32ToOS2Rect(window,(RECT *)pScroll, (PRECTLOS2)&scrollRect);
1381	if(pClip) mapWin32ToOS2Rect(window,(RECT *)pClip, (PRECTLOS2)&clipRect);
1382
1383	RECTL rectlUpdate;
1384	HRGN hrgn;
1385
1386	if (scrollFlag & SW_SMOOTHSCROLL_W)
1387	{
1388	INT time = (scrollFlag >> 16) & 0xFFFF;
1389
1390	//CB: todo, scroll in several steps
1391	// is time in ms? time <-> iteration count?
1392	}
1393
1394	LONG lComplexity = WinScrollWindow (window->getOS2WindowHandle(), dx, dy,
1395	(pScroll) ? &scrollRect : NULL,
1396	(pClip) ? &clipRect : NULL,
1397	hrgn, &rectlUpdate, scrollFlags);
1398	if (lComplexity == RGN_ERROR)
1399	{
1400	return ERROR_W;
1401	}
1402
1403	RECT winRectUpdate;
1404	LONG height = window->getClientHeight();
1405
1406	winRectUpdate.left = rectlUpdate.xLeft;
1407	winRectUpdate.right = rectlUpdate.xRight;
1408	winRectUpdate.top = height - rectlUpdate.yTop;
1409	winRectUpdate.bottom = height - rectlUpdate.yBottom;
1410
1411	if (pRectUpdate)
1412	*pRectUpdate = winRectUpdate;
1413
1414	if (hrgnUpdate)
1415	rc = setPMRgnIntoWinRgn (hrgn, hrgnUpdate, height);
1416
1417	if ((scrollFlag & SW_INVALIDATE_W) &&
1418	((lComplexity == RGN_RECT) \|\| (lComplexity == RGN_COMPLEX)))
1419	{
1420	rc = InvalidateRect (hwnd, &winRectUpdate, (scrollFlag & SW_ERASE_W) ? 1 : 0);
1421	if (rc == FALSE)
1422	{
1423	return (0);
1424	}
1425	}
1426
1427	switch (lComplexity)
1428	{
1429	case RGN_NULL:
1430	regionType = NULLREGION_W;
1431	break;
1432	case RGN_RECT:
1433	regionType = SIMPLEREGION_W;
1434	break;
1435	case RGN_COMPLEX:
1436	regionType = COMPLEXREGION_W;
1437	break;
1438	default:
1439	regionType = ERROR_W;
1440	break;
1441	}
1442
1443	return (regionType);
1444	}
1445	//******************************************************************************
1446	//******************************************************************************
1447	HWND WIN32API WindowFromDC(HDC hdc)
1448	{
1449	pDCData pHps = (pDCData)GpiQueryDCData( (HPS)hdc );
1450
1451	dprintf2(("USER32: WindowFromDC %x", hdc));
1452	if ( pHps )
1453	return Win32BaseWindow::OS2ToWin32Handle(pHps->hwnd);
1454	else
1455	return 0;
1456	}
1457	//******************************************************************************
1458	//******************************************************************************
1459	INT WIN32API ExcludeUpdateRgn( HDC hDC, HWND hWnd)
1460	{
1461	dprintf(("USER32: ExcludeUpdateRgn\n"));
1462	hWnd = Win32BaseWindow::Win32ToOS2Handle(hWnd);
1463
1464	return O32_ExcludeUpdateRgn(hDC,hWnd);
1465	}
1466	//******************************************************************************
1467	//******************************************************************************
1468	BOOL WIN32API ValidateRect( HWND hwnd, const RECT * lprc)
1469	{
1470	if(lprc) {
1471	dprintf(("USER32: ValidateRect %x (%d,%d)(%d,%d)", hwnd, lprc->left, lprc->top, lprc->right, lprc->bottom));
1472	}
1473	else dprintf(("USER32: ValidateRect %x", hwnd));
1474
1475	return RedrawWindow( hwnd, lprc, 0, RDW_VALIDATE_W \| RDW_NOCHILDREN_W \| (hwnd==0 ? RDW_UPDATENOW_W : 0));
1476	}
1477	//******************************************************************************
1478	//******************************************************************************
1479	BOOL WIN32API ValidateRgn( HWND hwnd, HRGN hrgn)
1480	{
1481	dprintf(("USER32: ValidateRgn %x %x", hwnd, hrgn));
1482	return RedrawWindow( hwnd, NULL, hrgn, RDW_VALIDATE_W \| RDW_NOCHILDREN_W \| (hwnd==0 ? RDW_UPDATENOW_W : 0));
1483	}
1484	/*****************************************************************************
1485	* Name : int WIN32API GetWindowRgn
1486	* Purpose : The GetWindowRgn function obtains a copy of the window region of a window.
1487	* Parameters: HWND hWnd handle to window whose window region is to be obtained
1488	* HRGN hRgn handle to region that receives a copy of the window region
1489	* Variables :
1490	* Result : NULLREGION, SIMPLEREGION, COMPLEXREGION, ERROR
1491	* Remark :
1492	* Status : UNTESTED STUB
1493	*
1494	* Author : Patrick Haller [Thu, 1998/02/26 11:55]
1495	*****************************************************************************/
1496
1497	int WIN32API GetWindowRgn(HWND hwnd, HRGN hRgn)
1498	{
1499	Win32BaseWindow *window;
1500	HRGN hWindowRegion;
1501
1502	window = Win32BaseWindow::GetWindowFromHandle(hwnd);
1503	if(!window) {
1504	dprintf(("SetWindowContextHelpId, window %x not found", hwnd));
1505	O32_SetLastError(ERROR_INVALID_WINDOW_HANDLE);
1506	return 0;
1507	}
1508	dprintf(("USER32:GetWindowRgn (%x,%x)", hwnd, hRgn));
1509	hWindowRegion = window->GetWindowRegion();
1510
1511	return O32_CombineRgn(hRgn, hWindowRegion, 0, RGN_COPY_W);
1512	}
1513	/*****************************************************************************
1514	* Name : int WIN32API SetWindowRgn
1515	* Purpose : The SetWindowRgn function sets the window region of a window. The
1516	* window region determines the area within the window where the
1517	* operating system permits drawing. The operating system does not
1518	* display any portion of a window that lies outside of the window region
1519	* When this function is called, the system sends the WM_WINDOWPOSCHANGING and
1520	* WM_WINDOWPOSCHANGED messages to the window.
1521	*
1522	* Parameters: HWND hWnd handle to window whose window region is to be set
1523	* HRGN hRgn handle to region
1524	* BOOL bRedraw window redraw flag
1525	* Variables :
1526	* Result : If the function succeeds, the return value is non-zero.
1527	* If the function fails, the return value is zero.
1528	* Remark :
1529	* Status : UNTESTED STUB
1530	*
1531	* Author : Patrick Haller [Thu, 1998/02/26 11:55]
1532	*****************************************************************************/
1533
1534	int WIN32API SetWindowRgn(HWND hwnd,
1535	HRGN hRgn,
1536	BOOL bRedraw)
1537	{
1538	Win32BaseWindow *window;
1539	HRGN hWindowRegion;
1540
1541	window = Win32BaseWindow::GetWindowFromHandle(hwnd);
1542	if(!window) {
1543	dprintf(("SetWindowContextHelpId, window %x not found", hwnd));
1544	O32_SetLastError(ERROR_INVALID_WINDOW_HANDLE);
1545	return 0;
1546	}
1547	dprintf(("USER32:SetWindowRgn (%x,%x,%d)", hwnd, hRgn, bRedraw));
1548	if(window->GetWindowRegion()) {
1549	O32_DeleteObject(window->GetWindowRegion());
1550	}
1551	window->SetWindowRegion(hRgn);
1552	if(bRedraw) {
1553	RedrawWindow(hwnd, 0, 0, RDW_UPDATENOW_W);
1554	}
1555	//TODO:
1556	// When this function is called, the system sends the WM_WINDOWPOSCHANGING and
1557	// WM_WINDOWPOSCHANGED messages to the window.
1558	return 1;
1559	}
1560	//******************************************************************************
1561	//******************************************************************************

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