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source: trunk/src/user32/dc.cpp@ 1965

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Last change on this file since 1965 was 1965, checked in by sandervl, 26 years ago
Experimental WM_ERASEBACKGND change
File size: 37.9 KB

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1	/* $Id: dc.cpp,v 1.24 1999-12-04 00:04:19 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	void TestWideLine (pDCData pHps)
72	{
73	const LOGPEN_W *pLogPen;
74
75	pHps->isWideLine = FALSE;
76	pLogPen = pHps->penIsExtPen ?
77	&(pHps->lastPenObject->ExtPen.logpen) :
78	&(pHps->lastPenObject->Pen.logpen);
79
80	if (((pLogPen->lopnStyle & PS_STYLE_MASK_W) != PS_NULL_W) &&
81	(pLogPen->lopnWidth.x > 0))
82	{
83	POINTL aptl[2] = { 0, 0, pLogPen->lopnWidth.x, pLogPen->lopnWidth.x };
84
85	GpiConvert(pHps->hps, CVTC_WORLD, CVTC_DEVICE, 2, aptl);
86
87	ULONG dx = abs(aptl[0].x - aptl[1].x);
88	ULONG dy = abs(aptl[0].y - aptl[1].y);
89
90	pHps->isWideLine = (dx > 1) \|\| (dy > 1);
91	}
92	}
93
94	void Calculate1PixelDelta(pDCData pHps)
95	{
96	POINTL aptl[2] = {0, 0, 1, 1};
97
98	GpiConvert(pHps->hps, CVTC_DEVICE, CVTC_WORLD, 2, aptl);
99	pHps->worldYDeltaFor1Pixel = (int)(aptl[1].y - aptl[0].y);
100	pHps->worldXDeltaFor1Pixel = (int)(aptl[1].x - aptl[0].x); // 171182
101	}
102
103	//******************************************************************************
104
105	int setMapMode(Win32BaseWindow *wnd, pDCData pHps, int mode)
106	{
107	int prevMode = 0;
108	ULONG flOptions;
109
110	switch (mode)
111	{
112	case MM_HIENGLISH_W : flOptions = PU_HIENGLISH; break;
113	case MM_LOENGLISH_W : flOptions = PU_LOENGLISH; break;
114	case MM_HIMETRIC_W : flOptions = PU_HIMETRIC ; break;
115	case MM_LOMETRIC_W : flOptions = PU_LOMETRIC ; break;
116	case MM_TEXT_W : flOptions = PU_PELS ; break;
117	case MM_TWIPS_W : flOptions = PU_TWIPS ; break;
118	case MM_ANISOTROPIC_W: flOptions = PU_PELS ; break;
119	case MM_ISOTROPIC_W : flOptions = PU_LOMETRIC ; break;
120	default:
121	O32_SetLastError (ERROR_INVALID_PARAMETER);
122	return FALSE;
123	}
124
125	prevMode = pHps->MapMode; /* store previous mode */
126	pHps->MapMode = mode;
127
128	if (mode == MM_TEXT_W)
129	{
130	pHps->viewportXExt =
131	pHps->viewportYExt = 1.0;
132	pHps->windowExt.cx =
133	pHps->windowExt.cy = 1;
134	}
135	else if (mode != MM_ANISOTROPIC_W)
136	{
137	RECTL rectl;
138	SIZEL sizel;
139	ULONG data[3];
140
141	data[0] = flOptions;
142	data[1] = data[2] = 0;
143
144	if (DevEscape(pHps->hdc ? pHps->hdc : pHps->hps, DEVESC_SETPS, 12, (PBYTE)data, 0, 0) == DEVESC_ERROR)
145	{
146	O32_SetLastError (ERROR_INVALID_PARAMETER);
147	return 0;
148	}
149
150	GpiQueryPageViewport(pHps->hps, &rectl);
151	pHps->viewportXExt = (double)rectl.xRight;
152	pHps->viewportYExt = -(double)rectl.yTop;
153
154	GreGetPageUnits(pHps->hdc? pHps->hdc : pHps->hps, &sizel);
155	pHps->windowExt.cx = sizel.cx;
156	pHps->windowExt.cy = sizel.cy;
157
158	data[0] = PU_PELS;
159	DevEscape(pHps->hdc ? pHps->hdc : pHps->hps, DEVESC_SETPS, 12, (PBYTE)data, 0, 0);
160	}
161
162	if (((prevMode != MM_ISOTROPIC_W) && (prevMode != MM_ANISOTROPIC_W)) &&
163	((mode == MM_ISOTROPIC_W) \|\| (mode == MM_ANISOTROPIC_W)))
164	{
165	if (pHps->lWndXExtSave && pHps->lWndYExtSave)
166	{
167	changePageXForm (wnd, pHps, (PPOINTL)&pHps->windowExt,
168	pHps->lWndXExtSave, pHps->lWndYExtSave, NULL );
169	pHps->lWndXExtSave = pHps->lWndYExtSave = 0;
170	}
171	if (pHps->lVwpXExtSave && pHps->lVwpYExtSave)
172	{
173	changePageXForm (wnd, pHps, NULL,
174	pHps->lVwpXExtSave, pHps->lVwpYExtSave, NULL );
175	pHps->lVwpXExtSave = pHps->lVwpYExtSave = 0;
176	}
177	}
178
179	setPageXForm(wnd, pHps);
180
181	return prevMode;
182	}
183
184	BOOL setPageXForm(Win32BaseWindow *wnd, pDCData pHps)
185	{
186	MATRIXLF mlf;
187	BOOL rc = TRUE;
188
189	pHps->height = clientHeight(wnd, 0, pHps) - 1;
190
191	double xScale = pHps->viewportXExt / (double)pHps->windowExt.cx;
192	double yScale = pHps->viewportYExt / (double)pHps->windowExt.cy;
193
194	mlf.fxM11 = FLOAT_TO_FIXED(xScale);
195	mlf.fxM12 = 0;
196	mlf.lM13 = 0;
197	mlf.fxM21 = 0;
198	mlf.fxM22 = FLOAT_TO_FIXED(yScale);
199	mlf.lM23 = 0;
200	mlf.lM31 = pHps->viewportOrg.x - (LONG)(pHps->windowOrg.x * xScale);
201	mlf.lM32 = pHps->viewportOrg.y - (LONG)(pHps->windowOrg.y * yScale);
202
203	pHps->isLeftLeft = mlf.fxM11 >= 0;
204	pHps->isTopTop = mlf.fxM22 >= 0;
205
206	BOOL bEnableYInversion = FALSE;
207	if ((mlf.fxM22 > 0) \|\|
208	((pHps->graphicsMode == GM_ADVANCED_W) &&
209	((pHps->MapMode == MM_ANISOTROPIC_W) \|\|
210	(pHps->MapMode == MM_ISOTROPIC_W))))
211	{
212	bEnableYInversion = TRUE;
213	}
214	else
215	{
216	bEnableYInversion = FALSE;
217	mlf.lM32 = pHps->HPStoHDCInversionHeight + pHps->height - mlf.lM32;
218	mlf.fxM22 = -mlf.fxM22;
219	}
220
221	if (!pHps->isMetaPS)
222	// if ((!pHps->isMetaPS) \|\|
223	// (pHps->pMetaFileObject && pHps->pMetaFileObject->isEnhanced()))
224	rc = GpiSetDefaultViewMatrix(pHps->hps, 8, &mlf, TRANSFORM_REPLACE);
225
226	if (bEnableYInversion)
227	GpiEnableYInversion(pHps->hps, pHps->height + pHps->HPStoHDCInversionHeight);
228	else
229	GpiEnableYInversion(pHps->hps, 0);
230
231	TestWideLine(pHps);
232	Calculate1PixelDelta(pHps);
233	return rc;
234	}
235
236	BOOL changePageXForm(Win32BaseWindow *wnd, pDCData pHps, PPOINTL pValue, int x, int y, PPOINTL pPrev)
237	{
238	BOOL result = FALSE;
239
240	if (pValue)
241	{
242	if (pPrev)
243	pPrev = pValue;
244
245	if ((pValue->x == x) && (pValue->y == y)) {
246	return TRUE;
247	}
248	pValue->x = x;
249	pValue->y = y;
250	}
251	else
252	{
253	if (pPrev)
254	{
255	pPrev->x = (int)pHps->viewportXExt;
256	pPrev->y = (int)pHps->viewportYExt;
257	}
258	pHps->viewportXExt = (double)x;
259	pHps->viewportYExt = (double)y;
260	}
261
262	if (pHps->MapMode == MM_ISOTROPIC_W)
263	{
264	double xExt = fabs(pHps->viewportXExt);
265	double yExt = fabs(pHps->viewportYExt);
266	double sf = fabs((double)pHps->windowExt.cx / pHps->windowExt.cy);
267
268	if (xExt > (yExt * sf))
269	{
270	xExt = yExt * sf;
271
272	if ((double)LONG_MAX <= xExt) return (result);
273
274	if (pHps->viewportXExt < 0.0)
275	pHps->viewportXExt = -xExt;
276	else
277	pHps->viewportXExt = xExt;
278	}
279	else
280	{
281	yExt = xExt / sf;
282
283	if ((double)LONG_MAX <= yExt) return (result);
284
285	if (pHps->viewportYExt < 0.0)
286	pHps->viewportYExt = -yExt;
287	else
288	pHps->viewportYExt = yExt;
289	}
290	}
291	result = setPageXForm(wnd, pHps);
292
293	return (result);
294	}
295
296	LONG clientHeight(Win32BaseWindow *wnd, HWND hwnd, pDCData pHps)
297	{
298	if ((hwnd == 0) && (pHps != 0))
299	hwnd = pHps->hwnd;
300
301	if ((hwnd != 0) \|\| (pHps == 0))
302	{
303	if (wnd)
304	return (wnd->getWindowHeight());
305	else
306	return OSLibQueryScreenHeight();
307	}
308	else if (pHps->bitmapHandle)
309	{
310	return pHps->bitmapHeight;
311	}
312	else if (pHps->isMetaPS)
313	{
314	return 0;
315	}
316	else if (pHps->isPrinter)
317	{
318	return pHps->printPageHeight;
319	}
320	else
321	{
322	return MEM_HPS_MAX;
323	}
324	}
325
326	BOOL isYup (pDCData pHps)
327	{
328	if (((pHps->windowExt.cy < 0) && (pHps->viewportYExt > 0.0)) \|\|
329	((pHps->windowExt.cy > 0) && (pHps->viewportYExt < 0.0)))
330	{
331	if ((pHps->graphicsMode == GM_COMPATIBLE_W) \|\|
332	((pHps->graphicsMode == GM_ADVANCED_W) && (pHps->xform.eM22 >= 0.0)))
333	return TRUE;
334	}
335	else
336	{
337	if ((pHps->graphicsMode == GM_ADVANCED_W) && (pHps->xform.eM22 < 0.0))
338	return TRUE;
339	}
340	return FALSE;
341	}
342
343	INT revertDy (Win32BaseWindow *wnd, INT dy)
344	{
345	if (wnd->isOwnDC())
346	{
347	pDCData pHps = (pDCData)GpiQueryDCData (wnd->getOwnDC());
348
349	if (pHps != NULLHANDLE)
350	if (!isYup (pHps))
351	dy = -dy;
352	}
353	else
354	{
355	dy = -dy;
356	}
357	return (dy);
358	}
359
360	VOID removeClientArea(pDCData pHps)
361	{
362	pHps->isClient = FALSE;
363
364	if (pHps->isClientArea)
365	{
366	pHps->isClientArea = FALSE;
367	GreSetupDC(pHps->hps,
368	pHps->hrgnVis,
369	pHps->ptlOrigin.x,
370	pHps->ptlOrigin.y,
371	0,
372	SETUPDC_ORIGIN \| SETUPDC_VISRGN \| SETUPDC_RECALCCLIP);
373	}
374	}
375
376	BOOL selectClientArea(Win32BaseWindow *wnd, pDCData pHps, PRECTL prclPaint)
377	{
378	RECTL rcl;
379	HRGN hrgnRect;
380	HWND hwnd;
381
382	if (!wnd) return (FALSE);
383
384	pHps->isClient = TRUE;
385	hwnd = pHps->hwnd;
386
387	rcl.xLeft = rcl.yBottom = 0;
388	rcl.xRight = wnd->getWindowWidth();
389	rcl.yTop = wnd->getWindowHeight();
390
391	WinMapWindowPoints(hwnd, HWND_DESKTOP, (PPOINTL) &rcl, 2);
392	pHps->ptlOrigin = *((PPOINTL) &rcl);
393
394	if (pHps->hrgnVis == 0)
395	pHps->hrgnVis = GreCreateRectRegion(pHps->hps, &rcl, 1);
396
397	hrgnRect = GreCreateRectRegion(pHps->hps, &rcl, 1);
398
399	if (!pHps->isClientArea)
400	GreCopyClipRegion(pHps->hps, pHps->hrgnVis, 0, COPYCRGN_VISRGN);
401
402	GreCombineRegion(pHps->hps, hrgnRect, pHps->hrgnVis, hrgnRect, CRGN_AND);
403	GreSetupDC(pHps->hps,
404	hrgnRect,
405	rcl.xLeft,
406	rcl.yBottom,
407	prclPaint,
408	SETUPDC_ORIGIN \| SETUPDC_VISRGN \| SETUPDC_RECALCCLIP);
409
410	pHps->isClientArea = TRUE;
411	GreDestroyRegion(pHps->hps, hrgnRect);
412
413	return (TRUE);
414	}
415
416	HDC sendEraseBkgnd (Win32BaseWindow *wnd)
417	{
418	BOOL erased;
419	HWND hwnd;
420	HDC hdc;
421	HPS hps;
422	HRGN hrgnUpdate, hrgnOld, hrgnClip, hrgnCombined;
423	RECTL rectl = { 1, 1, 2, 2 };
424
425	hwnd = wnd->getOS2WindowHandle();
426	hps = WinGetPS(hwnd);
427
428	hrgnUpdate = GpiCreateRegion (hps, 1, &rectl);
429	WinQueryUpdateRegion (hwnd, hrgnUpdate);
430	hrgnClip = GpiQueryClipRegion (hps);
431
432	if (hrgnClip == NULLHANDLE)
433	{
434	GpiSetClipRegion (hps, hrgnUpdate, &hrgnOld);
435	}
436	else
437	{
438	hrgnCombined = GpiCreateRegion (hps, 1, &rectl);
439	GpiCombineRegion (hps, hrgnCombined, hrgnClip, hrgnUpdate, CRGN_AND);
440	GpiSetClipRegion (hps, hrgnCombined, &hrgnOld);
441	GpiDestroyRegion (hps, hrgnUpdate);
442	GpiDestroyRegion (hps, hrgnClip);
443	}
444	if (hrgnOld != NULLHANDLE)
445	GpiDestroyRegion (hps, hrgnOld);
446
447	hdc = HPSToHDC (hwnd, hps, NULL, NULL);
448
449	erased = wnd->MsgEraseBackGround (hdc);
450
451	DeleteHDC (hdc);
452	WinReleasePS (hps);
453
454	return erased;
455	}
456
457	void releaseOwnDC (HDC hps)
458	{
459	pDCData pHps = (pDCData)GpiQueryDCData ((HPS)hps);
460
461	if (pHps) {
462	if (pHps->hrgnHDC)
463	GpiDestroyRegion (pHps->hps, pHps->hrgnHDC);
464
465	GpiSetBitmap (pHps->hps, NULL);
466	O32_DeleteObject (pHps->nullBitmapHandle);
467	GpiDestroyPS(pHps->hps);
468
469	if (pHps->hdc)
470	DevCloseDC(pHps->hdc);
471
472	// how can a memory chunk allocated by GpiAllocateDCData freed by delete?
473	// delete pHps;
474	}
475	}
476
477	HDC WIN32API BeginPaint (HWND hWnd, PPAINTSTRUCT_W lpps)
478	{
479	HWND hwnd = hWnd ? hWnd : HWND_DESKTOP;
480	pDCData pHps = NULLHANDLE;
481	RECTL rect;
482	HPS hPS_ownDC = NULLHANDLE;
483
484	dprintf (("USER32: BeginPaint(%x)", hWnd));
485
486	if ( !lpps )
487	{
488	O32_SetLastError (ERROR_INVALID_PARAMETER);
489	return (HDC)NULLHANDLE;
490	}
491
492	Win32BaseWindow *wnd = Win32BaseWindow::GetWindowFromHandle(hwnd);
493
494	if ((hwnd != HWND_DESKTOP) && wnd->isOwnDC())
495	{
496	hPS_ownDC = wnd->getOwnDC();
497	pHps = (pDCData)GpiQueryDCData(hPS_ownDC);
498	if (!pHps)
499	{
500	O32_SetLastError (ERROR_INVALID_PARAMETER);
501	return (HDC)NULLHANDLE;
502	}
503	}
504
505	HWND hwndClient = wnd->getOS2WindowHandle();
506	HPS hps = WinBeginPaint(hwndClient, hPS_ownDC, &rect);
507
508	if (!pHps)
509	{
510	HDC hdc = HPSToHDC (hwndClient, hps, NULL, NULL);
511	pHps = (pDCData)GpiQueryDCData(hps);
512	}
513
514	// if (wnd->isFrameWindow())
515	// {
516	// WinSendMsg( hwnd, /* WM_DRAW */ 0x20D, (MPARAM)hps, MPVOID );
517	//CB: subclassed window haven't got a frame
518	if (!wnd->isSubclassedOS2Wnd()) selectClientArea(wnd, pHps, &rect);
519	// }
520
521	if (hPS_ownDC == 0)
522	setMapMode (wnd, pHps, MM_TEXT_W);
523	else
524	setPageXForm (wnd, pHps);
525
526	pHps->hdcType = TYPE_3;
527	lpps->hdc = (HDC)hps;
528
529	// if (wnd->isEraseBkgnd())
530	wnd->setEraseBkgnd (FALSE, !wnd->MsgEraseBackGround(lpps->hdc));
531	wnd->setSupressErase (FALSE);
532	lpps->fErase = wnd->isPSErase();
533
534	if (!hPS_ownDC)
535	{
536	long height = wnd->getWindowHeight();
537	rect.yTop = height - rect.yTop;
538	rect.yBottom = height - rect.yBottom;
539	}
540	else
541	{
542	rect.yTop--;
543	rect.yBottom--;
544	GpiConvert(pHps->hps, CVTC_DEVICE, CVTC_WORLD, 2, (PPOINTL)&rect);
545	}
546
547	WINRECT_FROM_PMRECT(lpps->rcPaint, rect);
548
549	O32_SetLastError(0);
550	return (HDC)pHps->hps;
551	}
552
553	BOOL WIN32API EndPaint (HWND hwnd, const PAINTSTRUCT_W *pPaint)
554	{
555	dprintf (("USER32: EndPaint(%x)", hwnd));
556
557	if (!pPaint \|\| !pPaint->hdc )
558	return TRUE;
559
560	Win32BaseWindow *wnd = Win32BaseWindow::GetWindowFromHandle(hwnd);
561
562	if (!wnd) goto exit;
563
564	if (wnd->isOwnDC())
565	{
566	pDCData pHps = (pDCData)GpiQueryDCData((HPS)pPaint->hdc);
567	if (pHps && (pHps->hdcType == TYPE_3))
568	{
569	removeClientArea (pHps);
570	WinEndPaint (pHps->hps);
571	}
572	}
573	else
574	{
575	O32_EndPaint (HWND_DESKTOP, pPaint);
576	}
577
578	exit:
579	O32_SetLastError(0);
580	return TRUE;
581	}
582
583	BOOL WIN32API GetUpdateRect (HWND hwnd, LPRECT pRect, BOOL erase)
584	{
585	if (hwnd)
586	{
587	O32_SetLastError (ERROR_INVALID_HANDLE);
588	return FALSE;
589	}
590
591	RECTL rectl;
592	Win32BaseWindow *wnd = Win32BaseWindow::GetWindowFromHandle(hwnd);
593
594	BOOL updateRegionExists = WinQueryUpdateRect (hwnd, pRect ? &rectl : NULL);
595	if (!pRect) {
596	return (updateRegionExists);
597	}
598
599	if (updateRegionExists)
600	{
601	if (wnd->isOwnDC())
602	{
603	pDCData pHps = NULL;
604	pHps = (pDCData)GpiQueryDCData(wnd->getOwnDC());
605	if (!pHps)
606	{
607	O32_SetLastError (ERROR_INVALID_HANDLE);
608	return FALSE;
609	}
610	GpiConvert (pHps->hps, CVTC_DEVICE, CVTC_WORLD, 2, (PPOINTL)&rectl);
611	}
612	else
613	{
614	long height = wnd->getWindowHeight();
615	rectl.yTop = height - rectl.yTop;
616	rectl.yBottom = height - rectl.yBottom;
617	}
618
619	if (pRect)
620	WINRECT_FROM_PMRECT (*pRect, rectl);
621
622	if (erase)
623	sendEraseBkgnd (wnd);
624	}
625	else
626	{
627	if (pRect)
628	pRect->left = pRect->top = pRect->right = pRect->bottom = 0;
629	}
630
631	return updateRegionExists;
632	}
633
634	int WIN32API GetUpdateRgn (HWND hwnd, HRGN hrgn, BOOL erase)
635	{
636	LONG Complexity;
637
638	Complexity = O32_GetUpdateRgn (hwnd, hrgn, FALSE);
639	if (erase && (Complexity > NULLREGION_W)) {
640	Win32BaseWindow *wnd = Win32BaseWindow::GetWindowFromHandle(hwnd);
641	sendEraseBkgnd (wnd);
642	}
643
644	return Complexity;
645	}
646
647	// This implementation of GetDCEx supports
648	// DCX_WINDOW
649	// DCX_CACHE
650	// DCX_EXCLUDERGN (complex regions allowed)
651	// DCX_INTERSECTRGN (complex regions allowed)
652
653	HDC WIN32API GetDCEx (HWND hwnd, HRGN hrgn, ULONG flags)
654	{
655	Win32BaseWindow *wnd = NULL;
656	HWND hWindow;
657	BOOL success;
658	pDCData pHps = NULL;
659	HPS hps = NULLHANDLE;
660	BOOL drawingAllowed = TRUE;
661	BOOL isWindowOwnDC;
662	BOOL creatingOwnDC = FALSE;
663	PS_Type psType;
664
665	if (hwnd)
666	{
667	wnd = Win32BaseWindow::GetWindowFromHandle(hwnd);
668	if (flags & DCX_WINDOW_W)
669	hWindow = wnd->getOS2FrameWindowHandle();
670	else
671	hWindow = wnd->getOS2WindowHandle();
672	}
673	else
674	hWindow = HWND_DESKTOP;
675
676	dprintf (("User32: GetDCEx hwnd %x (%x %x) -> wnd %x", hwnd, hrgn, flags, wnd));
677
678	isWindowOwnDC = (((hWindow == HWND_DESKTOP) ? FALSE : wnd->isOwnDC())
679	&& !(flags & DCX_CACHE_W));
680
681	if (isWindowOwnDC)
682	{
683	hps = wnd->getOwnDC();
684	if (hps)
685	{
686	pDCData pHps = (pDCData)GpiQueryDCData (hps);
687	if (!pHps)
688	goto error;
689
690	if (flags & DCX_WINDOW_W)
691	removeClientArea (pHps);
692	else
693	selectClientArea (wnd, pHps, 0);
694
695	setPageXForm (wnd, pHps);
696
697	pHps->hdcType = TYPE_1;
698	return (HDC)hps;
699	}
700	else
701	creatingOwnDC = TRUE;
702	}
703
704	if (isWindowOwnDC)
705	{
706	SIZEL sizel = {0,0};
707	hps = GpiCreatePS (WinQueryAnchorBlock (hWindow),
708	WinOpenWindowDC (hWindow),
709	&sizel, PU_PELS \| GPIT_MICRO \| GPIA_ASSOC );
710	psType = MICRO;
711	}
712	else
713	{
714	if (hWindow == HWND_DESKTOP)
715	hps = WinGetScreenPS (hWindow);
716	else
717	hps = WinGetPS (hWindow);
718
719	psType = MICRO_CACHED;
720	}
721
722	if (!hps)
723	goto error;
724
725	HPSToHDC (hWindow, hps, NULL, NULL);
726	pHps = (pDCData)GpiQueryDCData (hps);
727
728	if (!(flags & DCX_WINDOW_W)) {
729	if (selectClientArea (wnd, pHps, 0))
730	setMapMode (wnd, pHps, MM_TEXT_W);
731	}
732
733	if ((flags & DCX_EXCLUDERGN_W) \|\| (flags & DCX_INTERSECTRGN_W))
734	{
735	ULONG BytesNeeded;
736	PRGNDATA_W RgnData;
737	PRECTL pr;
738	int i;
739	LONG height = OSLibQueryScreenHeight();
740
741	if (!hrgn)
742	goto error;
743
744	BytesNeeded = O32_GetRegionData (hrgn, 0, NULL);
745	RgnData = (PRGNDATA_W)_alloca (BytesNeeded);
746	if (RgnData == NULL)
747	goto error;
748	O32_GetRegionData (hrgn, BytesNeeded, RgnData);
749
750	i = RgnData->rdh.nCount;
751	pr = (PRECTL)(RgnData->Buffer);
752
753	success = TRUE;
754	if (flags & DCX_EXCLUDERGN_W)
755	for (; (i > 0) && success; i--, pr++) {
756	LONG y = pr->yBottom;
757
758	pr->yBottom = height - pr->yTop;
759	pr->yTop = height - y;
760	success &= GpiExcludeClipRectangle (pHps->hps, pr);
761	}
762	else
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 &= GpiIntersectClipRectangle (pHps->hps, pr);
769	}
770	if (!success)
771	goto error;
772	}
773
774	if (creatingOwnDC)
775	wnd->setOwnDC ((HDC)hps);
776
777	pHps->psType = psType;
778	pHps->hdcType = TYPE_1;
779	GpiSetDrawControl (hps, DCTL_DISPLAY, drawingAllowed ? DCTL_ON : DCTL_OFF);
780
781	return (HDC)pHps->hps;
782
783	error:
784	/* Something went wrong; clean up
785	*/
786	if (pHps)
787	{
788	if (pHps->hps)
789	{
790	if(pHps->psType == MICRO_CACHED)
791	WinReleasePS(pHps->hps);
792	else
793	GpiDestroyPS(pHps->hps);
794	}
795
796	if (pHps->hdc) DevCloseDC(pHps->hdc);
797	if (pHps->hrgnHDC) GpiDestroyRegion(pHps->hps, pHps->hrgnHDC);
798
799	O32_DeleteObject (pHps->nullBitmapHandle);
800	}
801	O32_SetLastError (ERROR_INVALID_PARAMETER);
802	return NULL;
803	}
804
805	HDC WIN32API GetDC (HWND hwnd)
806	{
807	return GetDCEx (hwnd, NULL, 0);
808	}
809
810	HDC WIN32API GetWindowDC (HWND hwnd)
811	{
812	return GetDCEx (hwnd, NULL, DCX_WINDOW_W);
813	}
814
815	int WIN32API ReleaseDC (HWND hwnd, HDC hdc)
816	{
817	BOOL isOwnDC = FALSE;
818	int rc;
819
820	if (hwnd)
821	{
822	Win32BaseWindow *wnd = Win32BaseWindow::GetWindowFromHandle (hwnd);
823	isOwnDC = wnd->isOwnDC();
824	}
825	if (isOwnDC)
826	rc = TRUE;
827	else
828	rc = O32_ReleaseDC (0, hdc);
829
830	dprintf(("ReleaseDC %x %x", hwnd, hdc));
831	return (rc);
832	}
833
834	BOOL WIN32API UpdateWindow (HWND hwnd)
835	{
836	if (!hwnd)
837	return FALSE;
838
839	Win32BaseWindow *wnd = Win32BaseWindow::GetWindowFromHandle (hwnd);
840
841	dprintf (("User32: UpdateWindow hwnd %x -> wnd %x", hwnd, wnd));
842
843	#if 0
844	if (WinQueryUpdateRect (wnd->getOS2WindowHandle(), NULL))
845	sendEraseBkgnd (wnd);
846	#endif
847
848	#if 1
849	WinUpdateWindow(wnd->getOS2FrameWindowHandle());
850	#else
851	wnd->MsgPaint(0);
852	#endif
853
854	return (TRUE);
855	}
856
857	// This implementation of RedrawWindow supports
858	// RDW_ERASE
859	// RDW_NOERASE
860	// RDW_INTERNALPAINT
861	// RDW_NOINTERNALPAINT
862	// RDW_INVALIDATE
863	// RDW_VALIDATE
864	// RDW_ERASENOW
865	// RDW_UPDATENOW
866
867	BOOL WIN32API RedrawWindow(HWND hwnd, const RECT* pRect, HRGN hrgn, DWORD redraw)
868	{
869	Win32BaseWindow *wnd;
870
871	if (redraw & (RDW_FRAME_W \| RDW_NOFRAME_W))
872	{
873	O32_SetLastError (ERROR_NOT_SUPPORTED);
874	return FALSE;
875	}
876
877	if (hwnd == NULLHANDLE)
878	{
879	#if 1
880	// Don't do this for now (causes lots of desktop repaints in WordPad)
881	O32_SetLastError (ERROR_INVALID_PARAMETER);
882	return FALSE;
883	#else
884	hwnd = HWND_DESKTOP;
885	wnd = Win32BaseWindow::GetWindowFromOS2Handle(OSLIB_HWND_DESKTOP);
886
887	if (!wnd)
888	{
889	dprintf(("USER32:dc: RedrawWindow can't find desktop window %08xh\n",
890	hwnd));
891	O32_SetLastError (ERROR_INVALID_PARAMETER);
892	return FALSE;
893	}
894	#endif
895	}
896	else
897	{
898	wnd = Win32BaseWindow::GetWindowFromHandle (hwnd);
899
900	if (!wnd)
901	{
902	dprintf(("USER32:dc: RedrawWindow can't find window %08xh\n",
903	hwnd));
904	O32_SetLastError (ERROR_INVALID_PARAMETER);
905	return FALSE;
906	}
907	hwnd = wnd->getOS2WindowHandle();
908	}
909
910	BOOL IncludeChildren = redraw & RDW_ALLCHILDREN_W ? TRUE : FALSE;
911	BOOL success = TRUE;
912	HPS hpsTemp = NULLHANDLE;
913	HRGN hrgnTemp = NULLHANDLE;
914	RECTL rectl;
915
916	if (redraw & RDW_UPDATENOW_W) redraw &= ~RDW_ERASENOW_W;
917
918	if (redraw & RDW_NOERASE_W)
919	wnd->setEraseBkgnd (FALSE);
920
921	if (redraw & RDW_UPDATENOW_W)
922	wnd->setSupressErase (FALSE);
923	else if (redraw & RDW_ERASENOW_W)
924	wnd->setSupressErase (FALSE);
925	#if 0
926	else
927	{
928	QMSG qmsg;
929	BOOL erase;
930
931	erase = (WinPeekMsg (HABX, &qmsg, hwnd, WM_PAINT, WM_PAINT, PM_REMOVE)
932	&& (redraw & RDW_NOERASE_W) == 0);
933
934	wnd->setSupressErase (!erase);
935	}
936
937	if (redraw & (RDW_NOINTERNALPAINT_W \| RDW_INTERNALPAINT_W))
938	{
939	QMSG qmsg;
940
941	WinPeekMsg( (HAB)0, &qmsg, hwnd, WM_VIRTUAL_INTERNALPAINT,
942	WM_VIRTUAL_INTERNALPAINT, PM_REMOVE );
943	}
944	#endif
945
946	if (hrgn)
947	{
948	ULONG BytesNeeded;
949	PRGNDATA_W RgnData;
950	PRECTL pr;
951	int i;
952	LONG height = wnd ? wnd->getWindowHeight() : OSLibQueryScreenHeight();
953
954	if (!hrgn)
955	goto error;
956
957	BytesNeeded = O32_GetRegionData (hrgn, 0, NULL);
958	RgnData = (PRGNDATA_W)_alloca (BytesNeeded);
959	if (RgnData == NULL)
960	goto error;
961	O32_GetRegionData (hrgn, BytesNeeded, RgnData);
962
963	pr = (PRECTL)(RgnData->Buffer);
964	for (i = RgnData->rdh.nCount; i > 0; i--, pr++) {
965	LONG temp = pr->yTop;
966	pr->yTop = height - pr->yBottom;
967	pr->yBottom = height - temp;
968	}
969
970	hpsTemp = WinGetScreenPS (HWND_DESKTOP);
971	hrgnTemp = GpiCreateRegion (hpsTemp, RgnData->rdh.nCount, (PRECTL)(RgnData->Buffer));
972	if (!hrgnTemp) goto error;
973	}
974	else if (pRect)
975	{
976	LONG height = wnd ? wnd->getWindowHeight() : OSLibQueryScreenHeight();
977
978	PMRECT_FROM_WINRECT (rectl, *pRect);
979	rectl.yTop = height - rectl.yTop;
980	rectl.yBottom = height - rectl.yBottom;
981	}
982
983	if (redraw & RDW_INVALIDATE_W)
984	{
985	if (redraw & RDW_ERASE_W)
986	wnd->setEraseBkgnd (TRUE, TRUE);
987
988	if (!pRect && !hrgn)
989	success = WinInvalidateRect (hwnd, NULL, IncludeChildren);
990	else if (hrgn)
991	success = WinInvalidateRegion (hwnd, hrgnTemp, IncludeChildren);
992	else
993	success = WinInvalidateRect (hwnd, &rectl, IncludeChildren);
994	if (!success) goto error;
995	}
996	else if (redraw & RDW_VALIDATE_W)
997	{
998	if (WinQueryUpdateRect (hwnd, NULL))
999	{
1000	if (!pRect && !hrgn)
1001	success = WinValidateRect (hwnd, NULL, IncludeChildren);
1002	else if (hrgn)
1003	success = WinValidateRegion (hwnd, hrgnTemp, IncludeChildren);
1004	else
1005	success = WinValidateRect (hwnd, &rectl, IncludeChildren);
1006	if (!success) goto error;
1007	}
1008	}
1009
1010	if (WinQueryUpdateRect (hwnd, NULL))
1011	{
1012	if (redraw & RDW_UPDATENOW_W)
1013	wnd->MsgPaint (0, FALSE);
1014
1015	else if ((redraw & RDW_ERASE_W) && (redraw & RDW_ERASENOW_W))
1016	wnd->setEraseBkgnd (FALSE, !sendEraseBkgnd (wnd));
1017	}
1018	else if ((redraw & RDW_INTERNALPAINT_W) && !(redraw & RDW_INVALIDATE_W))
1019	{
1020	if (redraw & RDW_UPDATENOW_W)
1021	wnd->MsgPaint (0, FALSE);
1022	// else
1023	// WinPostMsg( hwnd, WM_VIRTUAL_INTERNALPAINT, MPVOID, MPVOID );
1024	}
1025
1026	error:
1027	/* clean up */
1028	if (hrgnTemp)
1029	GpiDestroyRegion (hpsTemp, hrgnTemp);
1030
1031	if (hpsTemp)
1032	WinReleasePS (hpsTemp);
1033
1034	if ((redraw & RDW_INVALIDATE_W) == 0)
1035	wnd->setSupressErase (FALSE);
1036	else if ((redraw & RDW_ERASENOW_W) == RDW_ERASENOW_W)
1037	wnd->setSupressErase (TRUE);
1038
1039	if (!success)
1040	O32_SetLastError (ERROR_INVALID_PARAMETER);
1041
1042	return (success);
1043	}
1044
1045	BOOL WIN32API InvalidateRect (HWND hwnd, const RECT *pRect, BOOL erase)
1046	{
1047	// Win32BaseWindow *wnd = Win32BaseWindow::GetWindowFromHandle (hwnd);
1048	BOOL result;
1049
1050	// todo !!
1051	// if ( isFrame without client )
1052	// erase = TRUE;
1053
1054	result = RedrawWindow (hwnd, pRect, NULLHANDLE,
1055	RDW_ALLCHILDREN_W \| RDW_INVALIDATE_W \|
1056	(erase ? RDW_ERASE_W : 0) \|
1057	(hwnd == NULLHANDLE ? RDW_UPDATENOW_W : 0));
1058	return (result);
1059	}
1060
1061	BOOL WIN32API InvalidateRgn (HWND hwnd, HRGN hrgn, BOOL erase)
1062	{
1063	// Win32BaseWindow *wnd = Win32BaseWindow::GetWindowFromHandle (hwnd);
1064	BOOL result;
1065
1066	// todo !!
1067	// if ( isFrame without client )
1068	// erase = TRUE;
1069
1070	result = RedrawWindow (hwnd, NULL, hrgn,
1071	RDW_ALLCHILDREN_W \| RDW_INVALIDATE_W \|
1072	(erase ? RDW_ERASE_W : 0) \|
1073	(hwnd == NULLHANDLE ? RDW_UPDATENOW_W : 0));
1074	return (result);
1075	}
1076
1077	BOOL setPMRgnIntoWinRgn (HRGN hrgnPM, HRGN hrgnWin, LONG height)
1078	{
1079	BOOL rc;
1080	HPS hps = WinGetScreenPS (HWND_DESKTOP);
1081	RGNRECT rgnRect;
1082	rgnRect.ircStart = 1;
1083	rgnRect.crc = 0;
1084	rgnRect.ulDirection = RECTDIR_LFRT_TOPBOT; // doesn't make a difference because we're getting them all
1085
1086	rc = GpiQueryRegionRects (hps, hrgnPM, NULL, &rgnRect, NULL);
1087
1088	if (rc && (rgnRect.crcReturned > 0))
1089	{
1090	PRECTL Rcls = new RECTL[rgnRect.crcReturned];
1091	PRECTL pRcl = Rcls;
1092
1093	if (Rcls != NULL)
1094	{
1095	rgnRect.crc = rgnRect.crcReturned;
1096	rc = GpiQueryRegionRects (hps, hrgnPM, NULL, &rgnRect, Rcls);
1097
1098	rc = O32_SetRectRgn (hrgnWin, pRcl->xLeft,
1099	pRcl->xRight,
1100	height - pRcl->yTop,
1101	height - pRcl->yBottom);
1102
1103	if (rgnRect.crcReturned > 1)
1104	{
1105	int i;
1106	HRGN temp;
1107	temp = O32_CreateRectRgn (0, 0, 1, 1);
1108
1109	for (i = 1, pRcl++; rc && (i < rgnRect.crcReturned); i++, pRcl++)
1110	{
1111	rc = O32_SetRectRgn (temp, pRcl->xLeft,
1112	pRcl->xRight,
1113	height - pRcl->yTop,
1114	height - pRcl->yBottom);
1115	rc &= O32_CombineRgn (hrgnWin, hrgnWin, temp, RGN_OR_W);
1116	}
1117	O32_DeleteObject (temp);
1118	}
1119	delete[] Rcls;
1120	}
1121	else
1122	{
1123	rc = FALSE;
1124	}
1125	}
1126	else
1127	{
1128	rc = O32_SetRectRgn (hrgnWin, 0, 0, 0, 0);
1129	}
1130
1131	WinReleasePS (hps);
1132	return (rc);
1133	}
1134
1135	BOOL WIN32API ScrollDC (HDC hDC, int dx, int dy, const RECT *pScroll,
1136	const RECT *pClip, HRGN hrgnUpdate, LPRECT pRectUpdate)
1137	{
1138	BOOL rc = TRUE;
1139
1140	dprintf (("USER32: ScrollDC"));
1141
1142	if (!hDC)
1143	{
1144	return (FALSE);
1145	}
1146
1147	pDCData pHps = (pDCData)GpiQueryDCData ((HPS)hDC);
1148	HWND hwnd = pHps->hwnd;
1149	Win32BaseWindow *wnd = Win32BaseWindow::GetWindowFromHandle (hwnd);
1150
1151	if ((hwnd == NULLHANDLE) \|\| !wnd)
1152	{
1153	return (FALSE);
1154	}
1155
1156	POINTL ptl[2] = { 0, 0, dx, dy };
1157
1158	GpiConvert (pHps->hps, CVTC_WORLD, CVTC_DEVICE, 2, ptl);
1159	dx = (int)(ptl[1].x - ptl[0].x);
1160	dy = (int)(ptl[1].y - ptl[0].y);
1161
1162	RECTL scrollRect;
1163	RECTL clipRect;
1164
1165	if (pClip)
1166	{
1167	clipRect.xLeft = min (pClip->left, pClip->right);
1168	clipRect.xRight = max (pClip->left, pClip->right);
1169	clipRect.yTop = max (pClip->top, pClip->bottom);
1170	clipRect.yBottom = min (pClip->top, pClip->bottom);
1171
1172	if ((pHps->graphicsMode == GM_COMPATIBLE_W) &&
1173	(clipRect.xLeft != clipRect.xRight) &&
1174	(clipRect.yBottom != clipRect.yTop))
1175	{
1176	if (abs((int)pHps->viewportXExt) <= abs((int)pHps->windowExt.cx))
1177	clipRect.xRight -= abs(pHps->worldXDeltaFor1Pixel);
1178	else
1179	clipRect.xLeft += abs(pHps->worldXDeltaFor1Pixel);
1180
1181	if (abs((int)pHps->viewportYExt) <= abs((int)pHps->windowExt.cy))
1182	clipRect.yTop -= abs(pHps->worldYDeltaFor1Pixel);
1183	else
1184	clipRect.yBottom += abs(pHps->worldYDeltaFor1Pixel);
1185	}
1186	GpiConvert (pHps->hps, CVTC_WORLD, CVTC_DEVICE, 2, (PPOINTL)&clipRect);
1187	if (clipRect.xRight < clipRect.xLeft) {
1188	ULONG temp = clipRect.xLeft;
1189	clipRect.xLeft = clipRect.xRight;
1190	clipRect.xRight = temp;
1191	}
1192	if (clipRect.yTop < clipRect.yBottom) {
1193	ULONG temp = clipRect.yBottom;
1194	clipRect.yBottom = clipRect.yTop;
1195	clipRect.yTop = temp;
1196	}
1197	}
1198
1199	if (pScroll)
1200	{
1201	scrollRect.xLeft = min (pScroll->left, pScroll->right);
1202	scrollRect.xRight = max (pScroll->left, pScroll->right);
1203	scrollRect.yTop = max (pScroll->top, pScroll->bottom);
1204	scrollRect.yBottom = min (pScroll->top, pScroll->bottom);
1205
1206	if ((pHps->graphicsMode == GM_COMPATIBLE_W) &&
1207	(scrollRect.xLeft != scrollRect.xRight) &&
1208	(scrollRect.yBottom != scrollRect.yTop))
1209	{
1210	if (abs((int)pHps->viewportXExt) <= abs((int)pHps->windowExt.cx))
1211	scrollRect.xRight -= abs(pHps->worldXDeltaFor1Pixel);
1212	else
1213	scrollRect.xLeft += abs(pHps->worldXDeltaFor1Pixel);
1214
1215	if (abs((int)pHps->viewportYExt) <= abs((int)pHps->windowExt.cy))
1216	scrollRect.yTop -= abs(pHps->worldYDeltaFor1Pixel);
1217	else
1218	scrollRect.yBottom += abs(pHps->worldYDeltaFor1Pixel);
1219	}
1220	GpiConvert (pHps->hps, CVTC_WORLD, CVTC_DEVICE, 2, (PPOINTL)&scrollRect);
1221	if (scrollRect.xRight < scrollRect.xLeft) {
1222	ULONG temp = scrollRect.xLeft;
1223	scrollRect.xLeft = scrollRect.xRight;
1224	scrollRect.xRight = temp;
1225	}
1226	if (scrollRect.yTop < scrollRect.yBottom) {
1227	ULONG temp = scrollRect.yBottom;
1228	scrollRect.yBottom = scrollRect.yTop;
1229	scrollRect.yTop = temp;
1230	}
1231	}
1232	RECTL rectlUpdate;
1233	HRGN hrgn;
1234
1235	LONG lComplexity = WinScrollWindow (hwnd, dx, dy, (pScroll) ? &scrollRect : NULL, (pClip) ? &clipRect : NULL, hrgn, &rectlUpdate, 0);
1236	if (lComplexity == RGN_ERROR)
1237	{
1238	return (FALSE);
1239	}
1240
1241	RECT winRectUpdate;
1242	LONG height = wnd->getWindowHeight();
1243
1244	winRectUpdate.left = rectlUpdate.xLeft;
1245	winRectUpdate.right = rectlUpdate.xRight;
1246	winRectUpdate.top = height - rectlUpdate.yTop;
1247	winRectUpdate.bottom = height - rectlUpdate.yBottom;
1248
1249	if (pRectUpdate)
1250	*pRectUpdate = winRectUpdate;
1251
1252	if (hrgnUpdate)
1253	rc = setPMRgnIntoWinRgn (hrgn, hrgnUpdate, height);
1254
1255	return (rc);
1256	}
1257
1258	//******************************************************************************
1259	//******************************************************************************
1260	BOOL WIN32API ScrollWindow(HWND hwnd, int dx, int dy, const RECT pScroll, const RECT pClip)
1261	{
1262	Win32BaseWindow *window;
1263	APIRET rc;
1264	RECTL clientRect;
1265	RECTL scrollRect;
1266	RECTL clipRect;
1267	PRECTL pScrollRect = NULL;
1268	PRECTL pClipRect = NULL;
1269	ULONG scrollFlags = SW_INVALIDATERGN;
1270
1271	window = Win32BaseWindow::GetWindowFromHandle(hwnd);
1272	if(!window) {
1273	dprintf(("ScrollWindow, window %x not found", hwnd));
1274	return 0;
1275	}
1276	dprintf(("ScrollWindow %x %d %d %x %x", hwnd, dx, dy, pScroll, pClip));
1277	MapWin32ToOS2Rectl(window->getOS2WindowHandle(),window->getClientRect(), (PRECTLOS2)&clientRect);
1278	//Rectangle could be relative to parent window, so fix this
1279	if(clientRect.yBottom != 0) {
1280	clientRect.yTop -= clientRect.yBottom;
1281	clientRect.yBottom = 0;
1282	}
1283	if(clientRect.xLeft != 0) {
1284	clientRect.xRight -= clientRect.xLeft;
1285	clientRect.xLeft = 0;
1286	}
1287	if(pScroll) {
1288	MapWin32ToOS2Rectl(window->getOS2WindowHandle(),(RECT *)pScroll, (PRECTLOS2)&scrollRect);
1289	pScrollRect = &scrollRect;
1290
1291	//Scroll rectangle relative to client area
1292	pScrollRect->xLeft += clientRect.xLeft;
1293	pScrollRect->xRight += clientRect.xLeft;
1294	pScrollRect->yTop += clientRect.yBottom;
1295	pScrollRect->yBottom += clientRect.yBottom;
1296	WinIntersectRect ((HAB) 0, pScrollRect, pScrollRect, &clientRect);
1297	}
1298	else scrollFlags \|= SW_SCROLLCHILDREN;
1299
1300	if(pClip) {
1301	MapWin32ToOS2Rectl(window->getOS2WindowHandle(),(RECT *)pClip, (PRECTLOS2)&clipRect);
1302	pClipRect = &clipRect;
1303
1304	//Clip rectangle relative to client area
1305	pClipRect->xLeft += clientRect.xLeft;
1306	pClipRect->xRight += clientRect.xLeft;
1307	pClipRect->yTop += clientRect.yBottom;
1308	pClipRect->yBottom += clientRect.yBottom;
1309	WinIntersectRect ((HAB) 0, pClipRect, pClipRect, &clientRect);
1310	}
1311
1312	dy = revertDy (window, dy);
1313
1314	rc = WinScrollWindow(window->getOS2WindowHandle(), dx, dy,
1315	pScrollRect, pClipRect, NULLHANDLE,
1316	NULL, scrollFlags);
1317
1318	return (rc != RGN_ERROR);
1319	}
1320	//******************************************************************************
1321	//******************************************************************************
1322	INT WIN32API ScrollWindowEx(HWND hwnd, int dx, int dy, const RECT pScroll, const RECT pClip,
1323	HRGN hrgnUpdate, PRECT pRectUpdate, UINT scrollFlag)
1324	{
1325	Win32BaseWindow *window;
1326	APIRET rc;
1327	RECTL scrollRect;
1328	RECTL clipRect;
1329	ULONG scrollFlags = 0;
1330	int regionType = ERROR_W;
1331
1332	window = Win32BaseWindow::GetWindowFromHandle(hwnd);
1333	if(!window) {
1334	dprintf(("ScrollWindowEx, window %x not found", hwnd));
1335	return 0;
1336	}
1337
1338	dprintf(("ScrollWindowEx %x %d %d %x %x", hwnd, dx, dy, pScroll, pClip));
1339
1340	dy = revertDy (window, dy);
1341
1342	if (scrollFlag & SW_INVALIDATE_W) scrollFlags \|= SW_INVALIDATERGN;
1343	if (scrollFlag & SW_SCROLLCHILDREN_W) scrollFlags \|= SW_SCROLLCHILDREN;
1344
1345	if(pScroll) MapWin32ToOS2Rectl(window->getOS2WindowHandle(),(RECT *)pScroll, (PRECTLOS2)&scrollRect);
1346	if(pClip) MapWin32ToOS2Rectl(window->getOS2WindowHandle(),(RECT *)pClip, (PRECTLOS2)&clipRect);
1347
1348	RECTL rectlUpdate;
1349	HRGN hrgn;
1350
1351	if (scrollFlag & SW_SMOOTHSCROLL_W)
1352	{
1353	INT time = (scrollFlag >> 16) & 0xFFFF;
1354
1355	//CB: todo, scroll in several steps
1356	// is time in ms? time <-> iteration count?
1357	}
1358
1359	LONG lComplexity = WinScrollWindow (window->getOS2WindowHandle(), dx, dy,
1360	(pScroll) ? &scrollRect : NULL,
1361	(pClip) ? &clipRect : NULL,
1362	hrgn, &rectlUpdate, scrollFlags);
1363	if (lComplexity == RGN_ERROR)
1364	{
1365	return (0);
1366	}
1367
1368	RECT winRectUpdate;
1369	LONG height = window->getWindowHeight();
1370
1371	winRectUpdate.left = rectlUpdate.xLeft;
1372	winRectUpdate.right = rectlUpdate.xRight;
1373	winRectUpdate.top = height - rectlUpdate.yTop;
1374	winRectUpdate.bottom = height - rectlUpdate.yBottom;
1375
1376	if (pRectUpdate)
1377	*pRectUpdate = winRectUpdate;
1378
1379	if (hrgnUpdate)
1380	rc = setPMRgnIntoWinRgn (hrgn, hrgnUpdate, height);
1381
1382	if ((scrollFlag & SW_INVALIDATE_W) &&
1383	((lComplexity == RGN_RECT) \|\| (lComplexity == RGN_COMPLEX)))
1384	{
1385	rc = InvalidateRect (hwnd, &winRectUpdate, scrollFlag & SW_ERASE_W);
1386	if (rc == FALSE)
1387	{
1388	return (0);
1389	}
1390	}
1391
1392	switch (lComplexity)
1393	{
1394	case RGN_NULL:
1395	regionType = NULLREGION_W;
1396	break;
1397	case RGN_RECT:
1398	regionType = SIMPLEREGION_W;
1399	break;
1400	case RGN_COMPLEX:
1401	regionType = COMPLEXREGION_W;
1402	break;
1403	default:
1404	regionType = ERROR_W;
1405	break;
1406	}
1407
1408	return (regionType);
1409	}
1410	//******************************************************************************
1411	//******************************************************************************
1412	HWND WIN32API WindowFromDC(HDC hdc)
1413	{
1414	pDCData pHps = (pDCData)GpiQueryDCData( (HPS)hdc );
1415
1416	dprintf2(("USER32: WindowFromDC %x", hdc));
1417	if ( pHps )
1418	return Win32BaseWindow::OS2ToWin32Handle(pHps->hwnd);
1419	else
1420	return 0;
1421	}
1422	//******************************************************************************
1423	//******************************************************************************
1424	INT WIN32API ExcludeUpdateRgn( HDC hDC, HWND hWnd)
1425	{
1426	dprintf(("USER32: ExcludeUpdateRgn\n"));
1427	hWnd = Win32BaseWindow::Win32ToOS2Handle(hWnd);
1428
1429	return O32_ExcludeUpdateRgn(hDC,hWnd);
1430	}
1431	//******************************************************************************
1432	//******************************************************************************

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