VBoxDisplay.cpp@ 58049

Last change on this file since 58049 was 57741, checked in by vboxsync, 9 years ago

Additions/VBoxTray:

Refactored internal services to use the RTThread API.
First take on cleaning up VBoxTray, separating the services more and more. See @todos.
Updated some code areas where deprecated APIs were used.
A lot of log formatting fixes and renaming.

Property svn:eol-style set to native
Property svn:keywords set to Id Revision

File size: 44.5 KB

Line
1	/* $Id: VBoxDisplay.cpp 57741 2015-09-14 15:24:42Z vboxsync $ */
2	/** @file
3	* VBoxSeamless - Display notifications.
4	*/
5
6	/*
7	* Copyright (C) 2006-2015 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*/
17	#include "VBoxTray.h"
18	#include "VBoxHelpers.h"
19	#include "VBoxSeamless.h"
20
21	#include <malloc.h>
22
23	#include <iprt/assert.h>
24	#ifdef VBOX_WITH_WDDM
25	# include <iprt/asm.h>
26	#endif
27
28	#ifdef DEBUG
29	# define LOG_ENABLED
30	# define LOG_GROUP LOG_GROUP_DEFAULT
31	#endif
32	#include <VBox/log.h>
33	#include <VBox/VMMDev.h>
34
35	#include <VBoxDisplay.h>
36	#include <VBoxGuestInternal.h>
37	#include <VBoxHook.h>
38
39
40
41	typedef struct _VBOXDISPLAYCONTEXT
42	{
43	const VBOXSERVICEENV *pEnv;
44	BOOL fAnyX;
45	/** ChangeDisplaySettingsEx does not exist in NT. ResizeDisplayDevice uses the function. */
46	LONG (WINAPI * pfnChangeDisplaySettingsEx)(LPCTSTR lpszDeviceName, LPDEVMODE lpDevMode, HWND hwnd, DWORD dwflags, LPVOID lParam);
47	/** EnumDisplayDevices does not exist in NT. isVBoxDisplayDriverActive et al. are using these functions. */
48	BOOL (WINAPI * pfnEnumDisplayDevices)(IN LPCSTR lpDevice, IN DWORD iDevNum, OUT PDISPLAY_DEVICEA lpDisplayDevice, IN DWORD dwFlags);
49	/ Display driver interface, XPDM - WDDM abstraction see VBOXDISPIF definitions above */
50	VBOXDISPIF dispIf;
51	} VBOXDISPLAYCONTEXT, *PVBOXDISPLAYCONTEXT;
52
53	static VBOXDISPLAYCONTEXT g_Ctx = { 0 };
54
55	#ifdef VBOX_WITH_WDDM
56	typedef enum
57	{
58	VBOXDISPLAY_DRIVER_TYPE_UNKNOWN = 0,
59	VBOXDISPLAY_DRIVER_TYPE_XPDM = 1,
60	VBOXDISPLAY_DRIVER_TYPE_WDDM = 2
61	} VBOXDISPLAY_DRIVER_TYPE;
62
63	static VBOXDISPLAY_DRIVER_TYPE getVBoxDisplayDriverType (VBOXDISPLAYCONTEXT *pCtx);
64	#endif
65
66	static DECLCALLBACK(int) VBoxDisplayInit(const PVBOXSERVICEENV pEnv, void **ppInstance)
67	{
68	LogFlowFuncEnter();
69
70	PVBOXDISPLAYCONTEXT pCtx = &g_Ctx; /** @todo r=andy Use instance data via service lookup (add void pInstance). /
71	AssertPtr(pCtx);
72
73	OSVERSIONINFO OSinfo; /** @todo r=andy Use VBoxTray's g_dwMajorVersion? */
74	OSinfo.dwOSVersionInfoSize = sizeof(OSinfo);
75	GetVersionEx (&OSinfo);
76
77	int rc;
78	HMODULE hUser = GetModuleHandle("user32.dll"); /** @todo r=andy Use RTLdrXXX and friends. */
79
80	pCtx->pEnv = pEnv;
81
82	if (NULL == hUser)
83	{
84	LogFlowFunc(("Could not get module handle of USER32.DLL!\n"));
85	rc = VERR_NOT_IMPLEMENTED;
86	}
87	else if (OSinfo.dwMajorVersion >= 5) /* APIs available only on W2K and up. */
88	{
89	/** @todo r=andy Use RTLdrXXX and friends. */
90	/** @todo r=andy No unicode version available? */
91	(uintptr_t )&pCtx->pfnChangeDisplaySettingsEx = (uintptr_t)GetProcAddress(hUser, "ChangeDisplaySettingsExA");
92	LogFlowFunc(("pfnChangeDisplaySettingsEx = %p\n", pCtx->pfnChangeDisplaySettingsEx));
93
94	(uintptr_t )&pCtx->pfnEnumDisplayDevices = (uintptr_t)GetProcAddress(hUser, "EnumDisplayDevicesA");
95	LogFlowFunc(("pfnEnumDisplayDevices = %p\n", pCtx->pfnEnumDisplayDevices));
96
97	#ifdef VBOX_WITH_WDDM
98	if (OSinfo.dwMajorVersion >= 6)
99	{
100	/* This is Vista and up, check if we need to switch the display driver if to WDDM mode. */
101	LogFlowFunc(("this is Windows Vista and up\n"));
102	VBOXDISPLAY_DRIVER_TYPE enmType = getVBoxDisplayDriverType(pCtx);
103	if (enmType == VBOXDISPLAY_DRIVER_TYPE_WDDM)
104	{
105	LogFlowFunc(("WDDM driver is installed, switching display driver if to WDDM mode\n"));
106	/* This is hacky, but the most easiest way. */
107	VBOXDISPIF_MODE enmMode = (OSinfo.dwMajorVersion > 6 \|\| OSinfo.dwMinorVersion > 0) ? VBOXDISPIF_MODE_WDDM_W7 : VBOXDISPIF_MODE_WDDM;
108	DWORD dwErr = VBoxDispIfSwitchMode(const_cast<PVBOXDISPIF>(&pEnv->dispIf), enmMode, NULL /* old mode, we don't care about it */);
109	if (dwErr == NO_ERROR)
110	{
111	LogFlowFunc(("DispIf successfully switched to WDDM mode\n"));
112	rc = VINF_SUCCESS;
113	}
114	else
115	{
116	LogFlowFunc(("Failed to switch DispIf to WDDM mode, error (%d)\n", dwErr));
117	rc = RTErrConvertFromWin32(dwErr);
118	}
119	}
120	else
121	rc = VINF_SUCCESS;
122	}
123	else
124	rc = VINF_SUCCESS;
125	#endif
126	}
127	else if (OSinfo.dwMajorVersion <= 4) /* Windows NT 4.0. */
128	{
129	/* Nothing to do here yet. */
130	/** @todo r=andy Has this been tested? */
131	rc = VINF_SUCCESS;
132	}
133	else /* Unsupported platform. */
134	{
135	LogFlowFunc(("Warning: Display for platform not handled yet!\n"));
136	rc = VERR_NOT_IMPLEMENTED;
137	}
138
139	if (RT_SUCCESS(rc))
140	{
141	VBOXDISPIFESCAPE_ISANYX IsAnyX = { 0 };
142	IsAnyX.EscapeHdr.escapeCode = VBOXESC_ISANYX;
143	DWORD err = VBoxDispIfEscapeInOut(&pEnv->dispIf, &IsAnyX.EscapeHdr, sizeof(uint32_t));
144	if (err == NO_ERROR)
145	pCtx->fAnyX = !!IsAnyX.u32IsAnyX;
146	else
147	pCtx->fAnyX = TRUE;
148
149	*ppInstance = pCtx;
150	}
151
152	LogFlowFuncLeaveRC(rc);
153	return rc;
154	}
155
156	static DECLCALLBACK(void) VBoxDisplayDestroy(void *pInstance)
157	{
158	return;
159	}
160
161	#ifdef VBOX_WITH_WDDM
162	static VBOXDISPLAY_DRIVER_TYPE getVBoxDisplayDriverType(PVBOXDISPLAYCONTEXT pCtx)
163	#else
164	static bool isVBoxDisplayDriverActive(PVBOXDISPLAYCONTEXT pCtx)
165	#endif
166	{
167	#ifdef VBOX_WITH_WDDM
168	VBOXDISPLAY_DRIVER_TYPE enmType = VBOXDISPLAY_DRIVER_TYPE_UNKNOWN;
169	#else
170	bool result = false;
171	#endif
172
173	if( pCtx->pfnEnumDisplayDevices )
174	{
175	INT devNum = 0;
176	DISPLAY_DEVICE dispDevice;
177	FillMemory(&dispDevice, sizeof(DISPLAY_DEVICE), 0);
178	dispDevice.cb = sizeof(DISPLAY_DEVICE);
179
180	LogFlowFunc(("isVBoxDisplayDriverActive: Checking for active VBox display driver (W2K+) ...\n"));
181
182	while (EnumDisplayDevices(NULL,
183	devNum,
184	&dispDevice,
185	0))
186	{
187	LogFlowFunc(("isVBoxDisplayDriverActive: DevNum:%d\nName:%s\nString:%s\nID:%s\nKey:%s\nFlags=%08X\n\n",
188	devNum,
189	&dispDevice.DeviceName[0],
190	&dispDevice.DeviceString[0],
191	&dispDevice.DeviceID[0],
192	&dispDevice.DeviceKey[0],
193	dispDevice.StateFlags));
194
195	if (dispDevice.StateFlags & DISPLAY_DEVICE_PRIMARY_DEVICE)
196	{
197	LogFlowFunc(("isVBoxDisplayDriverActive: Primary device\n"));
198
199	if (strcmp(&dispDevice.DeviceString[0], "VirtualBox Graphics Adapter") == 0)
200	#ifndef VBOX_WITH_WDDM
201	result = true;
202	#else
203	enmType = VBOXDISPLAY_DRIVER_TYPE_XPDM;
204	/* WDDM driver can now have multiple incarnations,
205	* if the driver name contains VirtualBox, and does NOT match the XPDM name,
206	* assume it to be WDDM */
207	else if (strstr(&dispDevice.DeviceString[0], "VirtualBox"))
208	enmType = VBOXDISPLAY_DRIVER_TYPE_WDDM;
209	#endif
210	break;
211	}
212
213	FillMemory(&dispDevice, sizeof(DISPLAY_DEVICE), 0);
214
215	dispDevice.cb = sizeof(DISPLAY_DEVICE);
216
217	devNum++;
218	}
219	}
220	else /* This must be NT 4 or something really old, so don't use EnumDisplayDevices() here ... */
221	{
222	LogFlowFunc(("isVBoxDisplayDriverActive: Checking for active VBox display driver (NT or older) ...\n"));
223
224	DEVMODE tempDevMode;
225	ZeroMemory (&tempDevMode, sizeof (tempDevMode));
226	tempDevMode.dmSize = sizeof(DEVMODE);
227	EnumDisplaySettings(NULL, ENUM_CURRENT_SETTINGS, &tempDevMode); /* Get current display device settings */
228
229	/* Check for the short name, because all long stuff would be truncated */
230	if (strcmp((char*)&tempDevMode.dmDeviceName[0], "VBoxDisp") == 0)
231	#ifndef VBOX_WITH_WDDM
232	result = true;
233	#else
234	enmType = VBOXDISPLAY_DRIVER_TYPE_XPDM;
235	#endif
236	}
237
238	#ifndef VBOX_WITH_WDDM
239	return result;
240	#else
241	return enmType;
242	#endif
243	}
244
245	/** @todo r=andy The "display", "seamless" (and VBoxCaps facility in VBoxTray.cpp indirectly) is using this.
246	* Add a PVBOXDISPLAYCONTEXT here for properly getting the display (XPDM/WDDM) abstraction interfaces. */
247	DWORD EnableAndResizeDispDev(DEVMODE paDeviceModes, DISPLAY_DEVICE paDisplayDevices,
248	DWORD totalDispNum, UINT Id, DWORD aWidth, DWORD aHeight,
249	DWORD aBitsPerPixel, LONG aPosX, LONG aPosY, BOOL fEnabled, BOOL fExtDispSup)
250	{
251	DISPLAY_DEVICE displayDeviceTmp;
252	DISPLAY_DEVICE displayDevice;
253	DEVMODE deviceMode;
254	DWORD dwStatus = DISP_CHANGE_SUCCESSFUL;
255	DWORD iter ;
256
257	PVBOXDISPLAYCONTEXT pCtx = &g_Ctx; /* See todo above. */
258
259	deviceMode = paDeviceModes[Id];
260	displayDevice = paDisplayDevices[Id];
261
262	for (iter = 0; iter < totalDispNum; iter++)
263	{
264	if (iter != 0 && iter != Id && !(paDisplayDevices[iter].StateFlags & DISPLAY_DEVICE_ACTIVE))
265	{
266	LogRel(("Display: Initially disabling monitor with ID=%ld; total monitor count is %ld\n", iter, totalDispNum));
267	DEVMODE deviceModeTmp;
268	ZeroMemory(&deviceModeTmp, sizeof(DEVMODE));
269	deviceModeTmp.dmSize = sizeof(DEVMODE);
270	deviceModeTmp.dmFields = DM_PELSWIDTH \| DM_PELSHEIGHT \| DM_BITSPERPEL \| DM_POSITION
271	\| DM_DISPLAYFREQUENCY \| DM_DISPLAYFLAGS ;
272	displayDeviceTmp = paDisplayDevices[iter];
273	pCtx->pfnChangeDisplaySettingsEx(displayDeviceTmp.DeviceName, &deviceModeTmp, NULL,
274	(CDS_UPDATEREGISTRY \| CDS_NORESET), NULL);
275	}
276	}
277
278	if (fExtDispSup) /* Extended Display Support possible*/
279	{
280	if (fEnabled)
281	{
282	/* Special case for enabling the secondary monitor. */
283	if(!(displayDevice.StateFlags & DISPLAY_DEVICE_ACTIVE))
284	{
285	LogRel(("Display [ID=%ld, name='%s']: Is a secondary monitor and disabled -- enabling it\n", Id, displayDevice.DeviceName));
286	deviceMode.dmPosition.x = paDeviceModes[0].dmPelsWidth;
287	deviceMode.dmPosition.y = 0;
288	deviceMode.dmBitsPerPel = 32;
289	OSVERSIONINFO OSinfo;
290	OSinfo.dwOSVersionInfoSize = sizeof (OSinfo);
291	GetVersionEx (&OSinfo);
292
293	if (OSinfo.dwMajorVersion < 6)
294	/* dont any more flags here as, only DM_POISITON is used to enable the secondary display */
295	deviceMode.dmFields = DM_POSITION;
296	else /* for win 7 and above */
297	/* for vista and above DM_BITSPERPEL is necessary */
298	deviceMode.dmFields = DM_BITSPERPEL \| DM_DISPLAYFLAGS \| DM_DISPLAYFREQUENCY \| DM_POSITION;
299
300	dwStatus = pCtx->pfnChangeDisplaySettingsEx((LPSTR)displayDevice.DeviceName,&deviceMode, NULL, (CDS_UPDATEREGISTRY \| CDS_NORESET), NULL);
301	/* A second call to ChangeDisplaySettings updates the monitor.*/
302	pCtx->pfnChangeDisplaySettingsEx(NULL, NULL, NULL,0, NULL);
303	}
304	else /* secondary monitor already enabled. Request to change the resolution or position. */
305	{
306	if (aWidth !=0 && aHeight != 0)
307	{
308	LogRel(("Display [ID=%ld, name='%s']: Changing resolution to %ldx%ld\n", Id, displayDevice.DeviceName, aWidth, aHeight));
309	deviceMode.dmFields = DM_PELSWIDTH \| DM_PELSHEIGHT \| DM_BITSPERPEL
310	\| DM_DISPLAYFREQUENCY \| DM_DISPLAYFLAGS;
311	deviceMode.dmPelsWidth = aWidth;
312	deviceMode.dmPelsHeight = aHeight;
313	deviceMode.dmBitsPerPel = aBitsPerPixel;
314	}
315	if (aPosX != 0 \|\| aPosY != 0)
316	{
317	LogRel(("Display [ID=%ld, name='%s']: Changing position to %ld,%ld\n", Id, displayDevice.DeviceName, aPosX, aPosY));
318	deviceMode.dmFields \|= DM_POSITION;
319	deviceMode.dmPosition.x = aPosX;
320	deviceMode.dmPosition.y = aPosY;
321	}
322	dwStatus = pCtx->pfnChangeDisplaySettingsEx((LPSTR)displayDevice.DeviceName,
323	&deviceMode, NULL, CDS_NORESET\|CDS_UPDATEREGISTRY, NULL);
324	/* A second call to ChangeDisplaySettings updates the monitor. */
325	pCtx->pfnChangeDisplaySettingsEx(NULL, NULL, NULL,0, NULL);
326	}
327	}
328	else /* Request is there to disable the monitor with ID = Id*/
329	{
330	LogRel(("Display [ID=%ld, name='%s']: Disalbing\n", Id, displayDevice.DeviceName));
331
332	DEVMODE deviceModeTmp;
333	ZeroMemory(&deviceModeTmp, sizeof(DEVMODE));
334	deviceModeTmp.dmSize = sizeof(DEVMODE);
335	deviceModeTmp.dmFields = DM_PELSWIDTH \| DM_PELSHEIGHT \| DM_BITSPERPEL \| DM_POSITION
336	\| DM_DISPLAYFREQUENCY \| DM_DISPLAYFLAGS ;
337	displayDeviceTmp = paDisplayDevices[Id];
338	dwStatus = pCtx->pfnChangeDisplaySettingsEx(displayDeviceTmp.DeviceName, &deviceModeTmp, NULL,
339	(CDS_UPDATEREGISTRY \| CDS_NORESET), NULL);
340	pCtx->pfnChangeDisplaySettingsEx(NULL, NULL, NULL,0, NULL);
341	}
342	}
343	return dwStatus;
344	}
345
346	DWORD VBoxDisplayGetCount(void)
347	{
348	DISPLAY_DEVICE DisplayDevice;
349
350	ZeroMemory(&DisplayDevice, sizeof(DISPLAY_DEVICE));
351	DisplayDevice.cb = sizeof(DISPLAY_DEVICE);
352
353	/* Find out how many display devices the system has */
354	DWORD NumDevices = 0;
355	DWORD i = 0;
356	while (EnumDisplayDevices (NULL, i, &DisplayDevice, 0))
357	{
358	LogFlowFunc(("ResizeDisplayDevice: [%d] %s\n", i, DisplayDevice.DeviceName));
359
360	if (DisplayDevice.StateFlags & DISPLAY_DEVICE_PRIMARY_DEVICE)
361	{
362	LogFlowFunc(("ResizeDisplayDevice: Found primary device. err %d\n", GetLastError ()));
363	NumDevices++;
364	}
365	else if (!(DisplayDevice.StateFlags & DISPLAY_DEVICE_MIRRORING_DRIVER))
366	{
367
368	LogFlowFunc(("ResizeDisplayDevice: Found secondary device. err %d\n", GetLastError ()));
369	NumDevices++;
370	}
371
372	ZeroMemory(&DisplayDevice, sizeof(DisplayDevice));
373	DisplayDevice.cb = sizeof(DisplayDevice);
374	i++;
375	}
376
377	return NumDevices;
378	}
379
380	DWORD VBoxDisplayGetConfig(const DWORD NumDevices, DWORD pDevPrimaryNum, DWORD pNumDevices,
381	DISPLAY_DEVICE paDisplayDevices, DEVMODE paDeviceModes)
382	{
383	/* Fetch information about current devices and modes. */
384	DWORD DevNum = 0;
385	DWORD DevPrimaryNum = 0;
386
387	DISPLAY_DEVICE DisplayDevice;
388
389	ZeroMemory(&DisplayDevice, sizeof(DISPLAY_DEVICE));
390	DisplayDevice.cb = sizeof(DISPLAY_DEVICE);
391
392	DWORD i = 0;
393	while (EnumDisplayDevices (NULL, i, &DisplayDevice, 0))
394	{
395	LogFlowFunc(("ResizeDisplayDevice: [%d(%d)] %s\n", i, DevNum, DisplayDevice.DeviceName));
396
397	BOOL bFetchDevice = FALSE;
398
399	if (DisplayDevice.StateFlags & DISPLAY_DEVICE_PRIMARY_DEVICE)
400	{
401	LogFlowFunc(("ResizeDisplayDevice: Found primary device. err %d\n", GetLastError ()));
402	DevPrimaryNum = DevNum;
403	bFetchDevice = TRUE;
404	}
405	else if (!(DisplayDevice.StateFlags & DISPLAY_DEVICE_MIRRORING_DRIVER))
406	{
407
408	LogFlowFunc(("ResizeDisplayDevice: Found secondary device. err %d\n", GetLastError ()));
409	bFetchDevice = TRUE;
410	}
411
412	if (bFetchDevice)
413	{
414	if (DevNum >= NumDevices)
415	{
416	LogFlowFunc(("ResizeDisplayDevice: %d >= %d\n", NumDevices, DevNum));
417	return ERROR_BUFFER_OVERFLOW;
418	}
419
420	paDisplayDevices[DevNum] = DisplayDevice;
421
422	/* First try to get the video mode stored in registry (ENUM_REGISTRY_SETTINGS).
423	* A secondary display could be not active at the moment and would not have
424	* a current video mode (ENUM_CURRENT_SETTINGS).
425	*/
426	ZeroMemory(&paDeviceModes[DevNum], sizeof(DEVMODE));
427	paDeviceModes[DevNum].dmSize = sizeof(DEVMODE);
428	if (!EnumDisplaySettings((LPSTR)DisplayDevice.DeviceName,
429	ENUM_REGISTRY_SETTINGS, &paDeviceModes[DevNum]))
430	{
431	LogFlowFunc(("ResizeDisplayDevice: EnumDisplaySettings error %d\n", GetLastError ()));
432	}
433
434	if ( paDeviceModes[DevNum].dmPelsWidth == 0
435	\|\| paDeviceModes[DevNum].dmPelsHeight == 0)
436	{
437	/* No ENUM_REGISTRY_SETTINGS yet. Seen on Vista after installation.
438	* Get the current video mode then.
439	*/
440	ZeroMemory(&paDeviceModes[DevNum], sizeof(DEVMODE));
441	paDeviceModes[DevNum].dmSize = sizeof(DEVMODE);
442	if (!EnumDisplaySettings((LPSTR)DisplayDevice.DeviceName,
443	ENUM_CURRENT_SETTINGS, &paDeviceModes[DevNum]))
444	{
445	/* ENUM_CURRENT_SETTINGS returns FALSE when the display is not active:
446	* for example a disabled secondary display.
447	* Do not return here, ignore the error and set the display info to 0x0x0.
448	*/
449	LogFlowFunc(("ResizeDisplayDevice: EnumDisplaySettings(ENUM_CURRENT_SETTINGS) error %d\n", GetLastError ()));
450	}
451	}
452
453
454	DevNum++;
455	}
456
457	ZeroMemory(&DisplayDevice, sizeof(DISPLAY_DEVICE));
458	DisplayDevice.cb = sizeof(DISPLAY_DEVICE);
459	i++;
460	}
461
462	*pNumDevices = DevNum;
463
464	return NO_ERROR;
465	}
466
467	/* Returns TRUE to try again. */
468	/** @todo r=andy Why not using the VMMDevDisplayChangeRequestEx structure for all those parameters here? */
469	static BOOL ResizeDisplayDevice(PVBOXDISPLAYCONTEXT pCtx,
470	UINT Id, DWORD Width, DWORD Height, DWORD BitsPerPixel,
471	BOOL fEnabled, LONG dwNewPosX, LONG dwNewPosY, bool fChangeOrigin,
472	BOOL fExtDispSup)
473	{
474	BOOL fDispAlreadyEnabled = false; /* check whether the monitor with ID is already enabled. */
475	BOOL fModeReset = (Width == 0 && Height == 0 && BitsPerPixel == 0 &&
476	dwNewPosX == 0 && dwNewPosY == 0 && !fChangeOrigin);
477	DWORD dmFields = 0;
478
479	LogFlowFunc(("[%d] %dx%d at %d,%d fChangeOrigin %d fEnabled %d fExtDisSup %d\n",
480	Id, Width, Height, dwNewPosX, dwNewPosY, fChangeOrigin, fEnabled, fExtDispSup));
481
482	if (!pCtx->fAnyX)
483	Width &= 0xFFF8;
484
485	VBoxDispIfCancelPendingResize(&pCtx->pEnv->dispIf);
486
487	DWORD NumDevices = VBoxDisplayGetCount();
488
489	if (NumDevices == 0 \|\| Id >= NumDevices)
490	{
491	LogFlowFunc(("ResizeDisplayDevice: Requested identifier %d is invalid. err %d\n", Id, GetLastError ()));
492	return FALSE;
493	}
494
495	LogFlowFunc(("ResizeDisplayDevice: Found total %d devices. err %d\n", NumDevices, GetLastError ()));
496
497	DISPLAY_DEVICE paDisplayDevices = (DISPLAY_DEVICE )alloca (sizeof (DISPLAY_DEVICE) * NumDevices);
498	DEVMODE paDeviceModes = (DEVMODE )alloca (sizeof (DEVMODE) * NumDevices);
499	RECTL paRects = (RECTL )alloca (sizeof (RECTL) * NumDevices);
500	DWORD DevNum = 0;
501	DWORD DevPrimaryNum = 0;
502	DWORD dwStatus = VBoxDisplayGetConfig(NumDevices, &DevPrimaryNum, &DevNum, paDisplayDevices, paDeviceModes);
503	if (dwStatus != NO_ERROR)
504	{
505	LogFlowFunc(("ResizeDisplayDevice: VBoxGetDisplayConfig failed, %d\n", dwStatus));
506	return dwStatus;
507	}
508
509	if (NumDevices != DevNum)
510	LogFlowFunc(("ResizeDisplayDevice: NumDevices(%d) != DevNum(%d)\n", NumDevices, DevNum));
511
512	DWORD i = 0;
513
514	for (i = 0; i < DevNum; ++i)
515	{
516	if (fExtDispSup)
517	{
518	LogRel(("Extended Display Support.\n"));
519	LogFlowFunc(("[%d] %dx%dx%d at %d,%d, dmFields 0x%x\n",
520	i,
521	paDeviceModes[i].dmPelsWidth,
522	paDeviceModes[i].dmPelsHeight,
523	paDeviceModes[i].dmBitsPerPel,
524	paDeviceModes[i].dmPosition.x,
525	paDeviceModes[i].dmPosition.y,
526	paDeviceModes[i].dmFields));
527	}
528	else
529	{
530	LogRel(("NO Ext Display Support \n"));
531	}
532
533	paRects[i].left = paDeviceModes[i].dmPosition.x;
534	paRects[i].top = paDeviceModes[i].dmPosition.y;
535	paRects[i].right = paDeviceModes[i].dmPosition.x + paDeviceModes[i].dmPelsWidth;
536	paRects[i].bottom = paDeviceModes[i].dmPosition.y + paDeviceModes[i].dmPelsHeight;
537	}
538
539	/* Keep a record if the display with ID is already active or not. */
540	if (paDisplayDevices[Id].StateFlags & DISPLAY_DEVICE_ACTIVE)
541	{
542	LogRel(("Display with ID=%d already enabled\n", Id));
543	fDispAlreadyEnabled = TRUE;
544	}
545
546	/* Width, height equal to 0 means that this value must be not changed.
547	* Update input parameters if necessary.
548	* Note: BitsPerPixel is taken into account later, when new rectangles
549	* are assigned to displays.
550	*/
551	if (Width == 0)
552	Width = paRects[Id].right - paRects[Id].left;
553	else
554	dmFields \|= DM_PELSWIDTH;
555
556	if (Height == 0)
557	Height = paRects[Id].bottom - paRects[Id].top;
558	else
559	dmFields \|= DM_PELSHEIGHT;
560
561	if (BitsPerPixel == 0)
562	BitsPerPixel = paDeviceModes[Id].dmBitsPerPel;
563	else
564	dmFields \|= DM_BITSPERPEL;
565
566	if (!fChangeOrigin)
567	{
568	/* Use existing position. */
569	dwNewPosX = paRects[Id].left;
570	dwNewPosY = paRects[Id].top;
571	LogFlowFunc(("existing dwNewPosX %d, dwNewPosY %d\n", dwNewPosX, dwNewPosY));
572	}
573
574	/* Always update the position.
575	* It is either explicitly requested or must be set to the existing position.
576	*/
577	dmFields \|= DM_POSITION;
578
579	/* Check whether a mode reset or a change is requested.
580	* Rectangle position is recalculated only if fEnabled is 1.
581	* For non extended supported modes (old Host VMs), fEnabled
582	* is always 1.
583	*/
584	/* Handled the case where previouseresolution of secondary monitor
585	* was for eg. 102476832 and monitor was in disabled state.
586	* User gives the command
587	* setvideomode 1024 768 32 1 yes.
588	* Now in this case the resolution request is same as previous one but
589	* monitor is going from disabled to enabled state so the below condition
590	* shour return false
591	* The below condition will only return true , if no mode reset has
592	* been requested AND fEnabled is 1 and fDispAlreadyEnabled is also 1 AND
593	* all rect conditions are true. Thus in this case nothing has to be done.
594	*/
595	if ( !fModeReset && (!fEnabled == !fDispAlreadyEnabled)
596	&& paRects[Id].left == dwNewPosX
597	&& paRects[Id].top == dwNewPosY
598	&& paRects[Id].right - paRects[Id].left == Width
599	&& paRects[Id].bottom - paRects[Id].top == Height
600	&& paDeviceModes[Id].dmBitsPerPel == BitsPerPixel)
601	{
602	LogRel(("Already at desired resolution. No Change.\n"));
603	return FALSE;
604	}
605
606	hlpResizeRect(paRects, NumDevices, DevPrimaryNum, Id,
607	fEnabled ? Width : 0, fEnabled ? Height : 0, dwNewPosX, dwNewPosY);
608	#ifdef Log
609	for (i = 0; i < NumDevices; i++)
610	{
611	LogFlowFunc(("ResizeDisplayDevice: [%d]: %d,%d %dx%d\n",
612	i, paRects[i].left, paRects[i].top,
613	paRects[i].right - paRects[i].left,
614	paRects[i].bottom - paRects[i].top));
615	}
616	#endif /* Log */
617
618	#ifdef VBOX_WITH_WDDM
619	VBOXDISPLAY_DRIVER_TYPE enmDriverType = getVBoxDisplayDriverType (pCtx);
620	if (enmDriverType == VBOXDISPLAY_DRIVER_TYPE_WDDM)
621	{
622	/* Assign the new rectangles to displays. */
623	for (i = 0; i < NumDevices; i++)
624	{
625	paDeviceModes[i].dmPosition.x = paRects[i].left;
626	paDeviceModes[i].dmPosition.y = paRects[i].top;
627	paDeviceModes[i].dmPelsWidth = paRects[i].right - paRects[i].left;
628	paDeviceModes[i].dmPelsHeight = paRects[i].bottom - paRects[i].top;
629
630	if (i == Id)
631	paDeviceModes[i].dmBitsPerPel = BitsPerPixel;
632
633	paDeviceModes[i].dmFields \|= dmFields;
634
635	/* On Vista one must specify DM_BITSPERPEL.
636	* Note that the current mode dmBitsPerPel is already in the DEVMODE structure.
637	*/
638	if (!(paDeviceModes[i].dmFields & DM_BITSPERPEL))
639	{
640	LogFlowFunc(("no DM_BITSPERPEL\n"));
641	paDeviceModes[i].dmFields \|= DM_BITSPERPEL;
642	paDeviceModes[i].dmBitsPerPel = 32;
643	}
644
645	LogFlowFunc(("ResizeDisplayDevice: pfnChangeDisplaySettingsEx %x: %dx%dx%d at %d,%d fields 0x%X\n",
646	pCtx->pfnChangeDisplaySettingsEx,
647	paDeviceModes[i].dmPelsWidth,
648	paDeviceModes[i].dmPelsHeight,
649	paDeviceModes[i].dmBitsPerPel,
650	paDeviceModes[i].dmPosition.x,
651	paDeviceModes[i].dmPosition.y,
652	paDeviceModes[i].dmFields));
653	}
654
655	LogFlowFunc(("Request to resize the displa\n"));
656	DWORD err = VBoxDispIfResizeModes(&pCtx->pEnv->dispIf, Id, fEnabled, fExtDispSup, paDisplayDevices, paDeviceModes, DevNum);
657	if (err == NO_ERROR \|\| err != ERROR_RETRY)
658	{
659	if (err == NO_ERROR)
660	LogFlowFunc(("VBoxDispIfResizeModes succeeded\n"));
661	else
662	LogFlowFunc(("Failure VBoxDispIfResizeModes (%d)\n", err));
663	return FALSE;
664	}
665
666	LogFlowFunc(("ResizeDisplayDevice: RETRY requested\n"));
667	return TRUE;
668	}
669	#endif
670	/* Without this, Windows will not ask the miniport for its
671	* mode table but uses an internal cache instead.
672	*/
673	for (i = 0; i < NumDevices; i++)
674	{
675	DEVMODE tempDevMode;
676	ZeroMemory (&tempDevMode, sizeof (tempDevMode));
677	tempDevMode.dmSize = sizeof(DEVMODE);
678	EnumDisplaySettings((LPSTR)paDisplayDevices[i].DeviceName, 0xffffff, &tempDevMode);
679	LogFlowFunc(("ResizeDisplayDevice: EnumDisplaySettings last error %d\n", GetLastError ()));
680	}
681
682	/* Assign the new rectangles to displays. */
683	for (i = 0; i < NumDevices; i++)
684	{
685	paDeviceModes[i].dmPosition.x = paRects[i].left;
686	paDeviceModes[i].dmPosition.y = paRects[i].top;
687	paDeviceModes[i].dmPelsWidth = paRects[i].right - paRects[i].left;
688	paDeviceModes[i].dmPelsHeight = paRects[i].bottom - paRects[i].top;
689
690	/* On Vista one must specify DM_BITSPERPEL.
691	* Note that the current mode dmBitsPerPel is already in the DEVMODE structure.
692	*/
693	paDeviceModes[i].dmFields = DM_POSITION \| DM_PELSHEIGHT \| DM_PELSWIDTH \| DM_BITSPERPEL;
694
695	if ( i == Id
696	&& BitsPerPixel != 0)
697	{
698	/* Change dmBitsPerPel if requested. */
699	paDeviceModes[i].dmBitsPerPel = BitsPerPixel;
700	}
701
702	LogFlowFunc(("ResizeDisplayDevice: pfnChangeDisplaySettingsEx Current MonitorId=%d: %dx%dx%d at %d,%d\n",
703	i,
704	paDeviceModes[i].dmPelsWidth,
705	paDeviceModes[i].dmPelsHeight,
706	paDeviceModes[i].dmBitsPerPel,
707	paDeviceModes[i].dmPosition.x,
708	paDeviceModes[i].dmPosition.y));
709
710	LONG status = pCtx->pfnChangeDisplaySettingsEx((LPSTR)paDisplayDevices[i].DeviceName,
711	&paDeviceModes[i], NULL, CDS_NORESET \| CDS_UPDATEREGISTRY, NULL);
712	LogFlowFunc(("ResizeDisplayDevice: ChangeDisplaySettingsEx position status %d, err %d\n", status, GetLastError ()));
713	}
714
715	LogFlowFunc(("Enable And Resize Device. Id = %d, Width=%d Height=%d, \
716	dwNewPosX = %d, dwNewPosY = %d fEnabled=%d & fExtDispSupport = %d \n",
717	Id, Width, Height, dwNewPosX, dwNewPosY, fEnabled, fExtDispSup));
718	dwStatus = EnableAndResizeDispDev(paDeviceModes, paDisplayDevices, DevNum, Id, Width, Height, BitsPerPixel,
719	dwNewPosX, dwNewPosY, fEnabled, fExtDispSup);
720	if (dwStatus == DISP_CHANGE_SUCCESSFUL \|\| dwStatus == DISP_CHANGE_BADMODE)
721	{
722	/* Successfully set new video mode or our driver can not set
723	* the requested mode. Stop trying.
724	*/
725	return FALSE;
726	}
727	/* Retry the request. */
728	return TRUE;
729	}
730
731	/**
732	* Thread function to wait for and process display change
733	* requests
734	*/
735	DECLCALLBACK(int) VBoxDisplayWorker(void pInstance, bool volatile pfShutdown)
736	{
737	AssertPtr(pInstance);
738	LogFlowFunc(("pInstance=%p\n", pInstance));
739
740	/*
741	* Tell the control thread that it can continue
742	* spawning services.
743	*/
744	RTThreadUserSignal(RTThreadSelf());
745
746	PVBOXDISPLAYCONTEXT pCtx = (PVBOXDISPLAYCONTEXT)pInstance;
747
748	HANDLE gVBoxDriver = pCtx->pEnv->hDriver;
749	VBoxGuestFilterMaskInfo maskInfo;
750	DWORD cbReturned;
751
752	maskInfo.u32OrMask = VMMDEV_EVENT_DISPLAY_CHANGE_REQUEST \| VMMDEV_EVENT_MOUSE_CAPABILITIES_CHANGED;
753	maskInfo.u32NotMask = 0;
754	if (!DeviceIoControl(gVBoxDriver, VBOXGUEST_IOCTL_CTL_FILTER_MASK, &maskInfo, sizeof (maskInfo), NULL, 0, &cbReturned, NULL))
755	{
756	DWORD dwErr = GetLastError();
757	LogFlowFunc(("DeviceIOControl(CtlMask - or) failed with %ld, exiting\n", dwErr));
758	return RTErrConvertFromWin32(dwErr);
759	}
760
761	PostMessage(g_hwndToolWindow, WM_VBOX_GRAPHICS_SUPPORTED, 0, 0);
762
763	VBoxDispIfResizeStarted(&pCtx->pEnv->dispIf);
764
765	int rc = VINF_SUCCESS;
766
767	for (;;)
768	{
769	BOOL fExtDispSup = TRUE;
770	/* Wait for a display change event. */
771	VBoxGuestWaitEventInfo waitEvent;
772	waitEvent.u32TimeoutIn = 1000;
773	waitEvent.u32EventMaskIn = VMMDEV_EVENT_DISPLAY_CHANGE_REQUEST \| VMMDEV_EVENT_MOUSE_CAPABILITIES_CHANGED;
774	if (DeviceIoControl(gVBoxDriver, VBOXGUEST_IOCTL_WAITEVENT, &waitEvent, sizeof(waitEvent), &waitEvent, sizeof(waitEvent), &cbReturned, NULL))
775	{
776	/LogFlowFunc(("DeviceIOControl succeeded\n"));/
777
778	if (NULL == pCtx) {
779	LogFlowFunc(("Invalid context detected!\n"));
780	break;
781	}
782
783	if (NULL == pCtx->pEnv) {
784	LogFlowFunc(("Invalid context environment detected!\n"));
785	break;
786	}
787
788	/* are we supposed to stop? */
789	if (*pfShutdown)
790	break;
791
792	/LogFlowFunc(("checking event\n"));/
793
794	/* did we get the right event? */
795	if (waitEvent.u32EventFlagsOut & VMMDEV_EVENT_DISPLAY_CHANGE_REQUEST)
796	{
797	LogFlowFunc(("going to get display change information\n"));
798	BOOL fDisplayChangeQueried;
799
800
801	/* We got at least one event. Read the requested resolution
802	* and try to set it until success. New events will not be seen
803	* but a new resolution will be read in this poll loop.
804	*/
805	/* Try if extended mode display information is available from the host. */
806	VMMDevDisplayChangeRequestEx displayChangeRequest = {0};
807	fExtDispSup = TRUE;
808	displayChangeRequest.header.size = sizeof(VMMDevDisplayChangeRequestEx);
809	displayChangeRequest.header.version = VMMDEV_REQUEST_HEADER_VERSION;
810	displayChangeRequest.header.requestType = VMMDevReq_GetDisplayChangeRequestEx;
811	displayChangeRequest.eventAck = VMMDEV_EVENT_DISPLAY_CHANGE_REQUEST;
812	fDisplayChangeQueried = DeviceIoControl(gVBoxDriver, VBOXGUEST_IOCTL_VMMREQUEST(sizeof(VMMDevDisplayChangeRequestEx)), &displayChangeRequest, sizeof(VMMDevDisplayChangeRequestEx),
813	&displayChangeRequest, sizeof(VMMDevDisplayChangeRequestEx), &cbReturned, NULL);
814
815	if (!fDisplayChangeQueried)
816	{
817	LogFlowFunc(("Extended Display Not Supported. Trying VMMDevDisplayChangeRequest2\n"));
818	fExtDispSup = FALSE; /* Extended display Change request is not supported */
819
820	displayChangeRequest.header.size = sizeof(VMMDevDisplayChangeRequest2);
821	displayChangeRequest.header.version = VMMDEV_REQUEST_HEADER_VERSION;
822	displayChangeRequest.header.requestType = VMMDevReq_GetDisplayChangeRequest2;
823	displayChangeRequest.eventAck = VMMDEV_EVENT_DISPLAY_CHANGE_REQUEST;
824	fDisplayChangeQueried = DeviceIoControl(gVBoxDriver, VBOXGUEST_IOCTL_VMMREQUEST(sizeof(VMMDevDisplayChangeRequest2)), &displayChangeRequest, sizeof(VMMDevDisplayChangeRequest2),
825	&displayChangeRequest, sizeof(VMMDevDisplayChangeRequest2), &cbReturned, NULL);
826	displayChangeRequest.cxOrigin = 0;
827	displayChangeRequest.cyOrigin = 0;
828	displayChangeRequest.fChangeOrigin = 0;
829	displayChangeRequest.fEnabled = 1; /* Always Enabled for old VMs on Host.*/
830	}
831
832	if (!fDisplayChangeQueried)
833	{
834	LogFlowFunc(("Extended Display Not Supported. Trying VMMDevDisplayChangeRequest\n"));
835	fExtDispSup = FALSE; /Extended display Change request is not supported /
836	/* Try the old version of the request for old VBox hosts. */
837	displayChangeRequest.header.size = sizeof(VMMDevDisplayChangeRequest);
838	displayChangeRequest.header.version = VMMDEV_REQUEST_HEADER_VERSION;
839	displayChangeRequest.header.requestType = VMMDevReq_GetDisplayChangeRequest;
840	displayChangeRequest.eventAck = VMMDEV_EVENT_DISPLAY_CHANGE_REQUEST;
841	fDisplayChangeQueried = DeviceIoControl(gVBoxDriver, VBOXGUEST_IOCTL_VMMREQUEST(sizeof(VMMDevDisplayChangeRequest)), &displayChangeRequest, sizeof(VMMDevDisplayChangeRequest),
842	&displayChangeRequest, sizeof(VMMDevDisplayChangeRequest), &cbReturned, NULL);
843	displayChangeRequest.display = 0;
844	displayChangeRequest.cxOrigin = 0;
845	displayChangeRequest.cyOrigin = 0;
846	displayChangeRequest.fChangeOrigin = 0;
847	displayChangeRequest.fEnabled = 1; /* Always Enabled for old VMs on Host.*/
848	}
849
850	if (fDisplayChangeQueried)
851	{
852	/* Try to set the requested video mode. Repeat until it is successful or is rejected by the driver. */
853	for (;;)
854	{
855	LogFlowFunc(("VMMDevReq_GetDisplayChangeRequest2: %dx%dx%d at %d\n", displayChangeRequest.xres, displayChangeRequest.yres, displayChangeRequest.bpp, displayChangeRequest.display));
856
857	/*
858	* Only try to change video mode if the active display driver is VBox additions.
859	*/
860	#ifdef VBOX_WITH_WDDM
861	VBOXDISPLAY_DRIVER_TYPE enmDriverType = getVBoxDisplayDriverType (pCtx);
862
863	if (enmDriverType == VBOXDISPLAY_DRIVER_TYPE_WDDM)
864	LogFlowFunc(("Detected WDDM Driver\n"));
865
866	if (enmDriverType != VBOXDISPLAY_DRIVER_TYPE_UNKNOWN)
867	#else
868	if (isVBoxDisplayDriverActive (pCtx))
869	#endif
870	{
871	LogFlowFunc(("Display driver is active!\n"));
872
873	if (pCtx->pfnChangeDisplaySettingsEx != 0)
874	{
875	LogFlowFunc(("Detected W2K or later\n"));
876	/* W2K or later. */
877	LogFlowFunc(("DisplayChangeReqEx parameters aDisplay=%d x xRes=%d x yRes=%d x bpp=%d x SecondayMonEnb=%d x NewOriginX=%d x NewOriginY=%d x ChangeOrigin=%d\n",
878	displayChangeRequest.display,
879	displayChangeRequest.xres,
880	displayChangeRequest.yres,
881	displayChangeRequest.bpp,
882	displayChangeRequest.fEnabled,
883	displayChangeRequest.cxOrigin,
884	displayChangeRequest.cyOrigin,
885	displayChangeRequest.fChangeOrigin));
886	if (!ResizeDisplayDevice(pCtx,
887	displayChangeRequest.display,
888	displayChangeRequest.xres,
889	displayChangeRequest.yres,
890	displayChangeRequest.bpp,
891	displayChangeRequest.fEnabled,
892	displayChangeRequest.cxOrigin,
893	displayChangeRequest.cyOrigin,
894	displayChangeRequest.fChangeOrigin,
895	fExtDispSup
896	))
897	{
898	LogFlowFunc(("ResizeDipspalyDevice return 0\n"));
899	break;
900	}
901
902	}
903	else
904	{
905	LogFlowFunc(("Detected NT\n"));
906
907	/* Single monitor NT. */
908	DEVMODE devMode;
909	RT_ZERO(devMode);
910	devMode.dmSize = sizeof(DEVMODE);
911
912	/* get the current screen setup */
913	if (EnumDisplaySettings(NULL, ENUM_REGISTRY_SETTINGS, &devMode))
914	{
915	LogFlowFunc(("Current mode: %d x %d x %d at %d,%d\n",
916	devMode.dmPelsWidth, devMode.dmPelsHeight, devMode.dmBitsPerPel, devMode.dmPosition.x, devMode.dmPosition.y));
917
918	/* Check whether a mode reset or a change is requested. */
919	if (displayChangeRequest.xres \|\| displayChangeRequest.yres \|\| displayChangeRequest.bpp)
920	{
921	/* A change is requested.
922	* Set values which are not to be changed to the current values.
923	*/
924	if (!displayChangeRequest.xres)
925	displayChangeRequest.xres = devMode.dmPelsWidth;
926	if (!displayChangeRequest.yres)
927	displayChangeRequest.yres = devMode.dmPelsHeight;
928	if (!displayChangeRequest.bpp)
929	displayChangeRequest.bpp = devMode.dmBitsPerPel;
930	}
931	else
932	{
933	/* All zero values means a forced mode reset. Do nothing. */
934	LogFlowFunc(("Forced mode reset\n"));
935	}
936
937	/* Verify that the mode is indeed changed. */
938	if ( devMode.dmPelsWidth == displayChangeRequest.xres
939	&& devMode.dmPelsHeight == displayChangeRequest.yres
940	&& devMode.dmBitsPerPel == displayChangeRequest.bpp)
941	{
942	LogFlowFunc(("already at desired resolution\n"));
943	break;
944	}
945
946	// without this, Windows will not ask the miniport for its
947	// mode table but uses an internal cache instead
948	DEVMODE tempDevMode = {0};
949	tempDevMode.dmSize = sizeof(DEVMODE);
950	EnumDisplaySettings(NULL, 0xffffff, &tempDevMode);
951
952	/* adjust the values that are supposed to change */
953	if (displayChangeRequest.xres)
954	devMode.dmPelsWidth = displayChangeRequest.xres;
955	if (displayChangeRequest.yres)
956	devMode.dmPelsHeight = displayChangeRequest.yres;
957	if (displayChangeRequest.bpp)
958	devMode.dmBitsPerPel = displayChangeRequest.bpp;
959
960	LogFlowFunc(("setting new mode %d x %d, %d BPP\n",
961	devMode.dmPelsWidth, devMode.dmPelsHeight, devMode.dmBitsPerPel));
962
963	/* set the new mode */
964	LONG status = ChangeDisplaySettings(&devMode, CDS_UPDATEREGISTRY);
965	if (status != DISP_CHANGE_SUCCESSFUL)
966	{
967	LogFlowFunc(("error from ChangeDisplaySettings: %d\n", status));
968
969	if (status == DISP_CHANGE_BADMODE)
970	{
971	/* Our driver can not set the requested mode. Stop trying. */
972	break;
973	}
974	}
975	else
976	{
977	/* Successfully set new video mode. */
978	break;
979	}
980	}
981	else
982	{
983	LogFlowFunc(("error from EnumDisplaySettings: %d\n", GetLastError ()));
984	break;
985	}
986	}
987	}
988	else
989	{
990	LogFlowFunc(("vboxDisplayDriver is not active\n"));
991	}
992
993	/* Retry the change a bit later. */
994	RTThreadSleep(1000);
995	}
996	}
997	else
998	{
999	/* sleep a bit to not eat too much CPU while retrying */
1000	RTThreadSleep(50);
1001	}
1002	}
1003
1004	/* are we supposed to stop? */
1005	if (*pfShutdown)
1006	break;
1007
1008	if (waitEvent.u32EventFlagsOut & VMMDEV_EVENT_MOUSE_CAPABILITIES_CHANGED)
1009	hlpReloadCursor();
1010	}
1011	else
1012	{
1013	/* sleep a bit to not eat too much CPU in case the above call always fails */
1014	RTThreadSleep(10);
1015
1016	if (*pfShutdown)
1017	break;
1018	}
1019	}
1020
1021	/*
1022	* Remove event filter and graphics capability report.
1023	*/
1024	maskInfo.u32OrMask = 0;
1025	maskInfo.u32NotMask = VMMDEV_EVENT_DISPLAY_CHANGE_REQUEST \| VMMDEV_EVENT_MOUSE_CAPABILITIES_CHANGED;
1026	if (!DeviceIoControl(gVBoxDriver, VBOXGUEST_IOCTL_CTL_FILTER_MASK, &maskInfo, sizeof (maskInfo), NULL, 0, &cbReturned, NULL))
1027	LogFlowFunc(("DeviceIOControl(CtlMask - not) failed\n"));
1028	PostMessage(g_hwndToolWindow, WM_VBOX_GRAPHICS_UNSUPPORTED, 0, 0);
1029
1030	LogFlowFuncLeaveRC(rc);
1031	return rc;
1032	}
1033
1034	/**
1035	* The service description.
1036	*/
1037	VBOXSERVICEDESC g_SvcDescDisplay =
1038	{
1039	/* pszName. */
1040	"display",
1041	/* pszDescription. */
1042	"Display Notifications",
1043	/* methods */
1044	VBoxDisplayInit,
1045	VBoxDisplayWorker,
1046	NULL /* pfnStop */,
1047	VBoxDisplayDestroy
1048	};
1049

Note: See TracBrowser for help on using the repository browser.

source: vbox/trunk/src/VBox/Additions/WINNT/VBoxTray/VBoxDisplay.cpp@ 58049

Download in other formats: