VBoxDisplay.cpp@ 8155

Last change on this file since 8155 was 8155, checked in by vboxsync, 17 years ago
The Big Sun Rebranding Header Change
File size: 24.4 KB

Line
1	/** @file
2	*
3	* VBoxSeamless - Display notifications
4	*
5	*/
6
7	/*
8	* Copyright (C) 2006-2007 Sun Microsystems, Inc.
9	*
10	* This file is part of VirtualBox Open Source Edition (OSE), as
11	* available from http://www.virtualbox.org. This file is free software;
12	* you can redistribute it and/or modify it under the terms of the GNU
13	* General Public License (GPL) as published by the Free Software
14	* Foundation, in version 2 as it comes in the "COPYING" file of the
15	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
16	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
17	*
18	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
19	* Clara, CA 95054 USA or visit http://www.sun.com if you need
20	* additional information or have any questions.
21	*/
22	#define _WIN32_WINNT 0x0500
23	#include <windows.h>
24	#include "VBoxService.h"
25	#include "VBoxSeamless.h"
26	#include <VBoxHook.h>
27	#include <VBoxDisplay.h>
28	#include <VBox/VBoxDev.h>
29	#include <iprt/assert.h>
30	#include "helpers.h"
31	#include <malloc.h>
32
33	typedef struct _VBOXDISPLAYCONTEXT
34	{
35	const VBOXSERVICEENV *pEnv;
36
37	/* ChangeDisplaySettingsEx does not exist in NT. ResizeDisplayDevice uses the function. */
38	LONG (WINAPI * pfnChangeDisplaySettingsEx)(LPCTSTR lpszDeviceName, LPDEVMODE lpDevMode, HWND hwnd, DWORD dwflags, LPVOID lParam);
39
40	/* EnumDisplayDevices does not exist in NT. isVBoxDisplayDriverActive et al. are using these functions. */
41	BOOL (WINAPI * pfnEnumDisplayDevices)(IN LPCSTR lpDevice, IN DWORD iDevNum, OUT PDISPLAY_DEVICEA lpDisplayDevice, IN DWORD dwFlags);
42
43	} VBOXDISPLAYCONTEXT;
44
45	static VBOXDISPLAYCONTEXT gCtx = {0};
46
47	int VBoxDisplayInit(const VBOXSERVICEENV pEnv, void ppInstance, bool pfStartThread)
48	{
49	OSVERSIONINFO OSinfo;
50	OSinfo.dwOSVersionInfoSize = sizeof (OSinfo);
51	GetVersionEx (&OSinfo);
52
53	HMODULE hUser = GetModuleHandle("USER32");
54
55	gCtx.pEnv = pEnv;
56
57	if (NULL == hUser)
58	{
59	dprintf(("VBoxService: Could not get module handle of USER32.DLL!\n"));
60	return VERR_NOT_IMPLEMENTED;
61	}
62	else if (OSinfo.dwMajorVersion >= 5) /* APIs available only on W2K and up! */
63	{
64	(uintptr_t )&gCtx.pfnChangeDisplaySettingsEx = (uintptr_t)GetProcAddress(hUser, "ChangeDisplaySettingsExA");
65	dprintf(("VBoxService: pfnChangeDisplaySettingsEx = %p\n", gCtx.pfnChangeDisplaySettingsEx));
66
67	(uintptr_t )&gCtx.pfnEnumDisplayDevices = (uintptr_t)GetProcAddress(hUser, "EnumDisplayDevicesA");
68	dprintf(("VBoxService: pfnEnumDisplayDevices = %p\n", gCtx.pfnEnumDisplayDevices));
69	}
70	else if (OSinfo.dwMajorVersion <= 4) /* Windows NT 4.0 */
71	{
72	/* Nothing to do here yet */
73	}
74	else /* Unsupported platform */
75	{
76	dprintf(("VBoxService: Warning, display for platform not handled yet!\n"));
77	return VERR_NOT_IMPLEMENTED;
78	}
79
80	dprintf(("VBoxService: Display init successful.\n"));
81
82	*pfStartThread = true;
83	ppInstance = (void )&gCtx;
84	return VINF_SUCCESS;
85	}
86
87	void VBoxDisplayDestroy (const VBOXSERVICEENV pEnv, void pInstance)
88	{
89	return;
90	}
91
92	static bool isVBoxDisplayDriverActive (VBOXDISPLAYCONTEXT *pCtx)
93	{
94	bool result = false;
95
96	if( pCtx->pfnEnumDisplayDevices )
97	{
98	INT devNum = 0;
99	DISPLAY_DEVICE dispDevice;
100	FillMemory(&dispDevice, sizeof(DISPLAY_DEVICE), 0);
101	dispDevice.cb = sizeof(DISPLAY_DEVICE);
102
103	dprintf(("Checking for active VBox display driver (W2K+)...\n"));
104
105	while (EnumDisplayDevices(NULL,
106	devNum,
107	&dispDevice,
108	0))
109	{
110	dprintf(("DevNum:%d\nName:%s\nString:%s\nID:%s\nKey:%s\nFlags=%08X\n\n",
111	devNum,
112	&dispDevice.DeviceName[0],
113	&dispDevice.DeviceString[0],
114	&dispDevice.DeviceID[0],
115	&dispDevice.DeviceKey[0],
116	dispDevice.StateFlags));
117
118	if (dispDevice.StateFlags & DISPLAY_DEVICE_PRIMARY_DEVICE)
119	{
120	dprintf(("Primary device.\n"));
121
122	if (strcmp(&dispDevice.DeviceString[0], "VirtualBox Graphics Adapter") == 0)
123	result = true;
124
125	break;
126	}
127
128	FillMemory(&dispDevice, sizeof(DISPLAY_DEVICE), 0);
129
130	dispDevice.cb = sizeof(DISPLAY_DEVICE);
131
132	devNum++;
133	}
134	}
135	else /* This must be NT 4 or something really old, so don't use EnumDisplayDevices() here ... */
136	{
137	dprintf(("Checking for active VBox display driver (NT or older)...\n"));
138
139	DEVMODE tempDevMode;
140	ZeroMemory (&tempDevMode, sizeof (tempDevMode));
141	tempDevMode.dmSize = sizeof(DEVMODE);
142	EnumDisplaySettings(NULL, ENUM_CURRENT_SETTINGS, &tempDevMode); /* Get current display device settings */
143
144	/* Check for the short name, because all long stuff would be truncated */
145	if (strcmp((char*)&tempDevMode.dmDeviceName[0], "VBoxDisp") == 0)
146	result = true;
147	}
148
149	return result;
150	}
151
152	/* Returns TRUE to try again. */
153	static BOOL ResizeDisplayDevice(ULONG Id, DWORD Width, DWORD Height, DWORD BitsPerPixel)
154	{
155	BOOL fModeReset = (Width == 0 && Height == 0 && BitsPerPixel == 0);
156
157	DISPLAY_DEVICE DisplayDevice;
158
159	ZeroMemory(&DisplayDevice, sizeof(DisplayDevice));
160	DisplayDevice.cb = sizeof(DisplayDevice);
161
162	/* Find out how many display devices the system has */
163	DWORD NumDevices = 0;
164	DWORD i = 0;
165	while (EnumDisplayDevices (NULL, i, &DisplayDevice, 0))
166	{
167	dprintf(("[%d] %s\n", i, DisplayDevice.DeviceName));
168
169	if (DisplayDevice.StateFlags & DISPLAY_DEVICE_PRIMARY_DEVICE)
170	{
171	dprintf(("Found primary device. err %d\n", GetLastError ()));
172	NumDevices++;
173	}
174	else if (!(DisplayDevice.StateFlags & DISPLAY_DEVICE_MIRRORING_DRIVER))
175	{
176
177	dprintf(("Found secondary device. err %d\n", GetLastError ()));
178	NumDevices++;
179	}
180
181	ZeroMemory(&DisplayDevice, sizeof(DisplayDevice));
182	DisplayDevice.cb = sizeof(DisplayDevice);
183	i++;
184	}
185
186	dprintf(("Found total %d devices. err %d\n", NumDevices, GetLastError ()));
187
188	if (NumDevices == 0 \|\| Id >= NumDevices)
189	{
190	dprintf(("Requested identifier %d is invalid. err %d\n", Id, GetLastError ()));
191	return FALSE;
192	}
193
194	DISPLAY_DEVICE paDisplayDevices = (DISPLAY_DEVICE )alloca (sizeof (DISPLAY_DEVICE) * NumDevices);
195	DEVMODE paDeviceModes = (DEVMODE )alloca (sizeof (DEVMODE) * NumDevices);
196	RECTL paRects = (RECTL )alloca (sizeof (RECTL) * NumDevices);
197
198	/* Fetch information about current devices and modes. */
199	DWORD DevNum = 0;
200	DWORD DevPrimaryNum = 0;
201
202	ZeroMemory(&DisplayDevice, sizeof(DISPLAY_DEVICE));
203	DisplayDevice.cb = sizeof(DISPLAY_DEVICE);
204
205	i = 0;
206	while (EnumDisplayDevices (NULL, i, &DisplayDevice, 0))
207	{
208	dprintf(("[%d(%d)] %s\n", i, DevNum, DisplayDevice.DeviceName));
209
210	BOOL bFetchDevice = FALSE;
211
212	if (DisplayDevice.StateFlags & DISPLAY_DEVICE_PRIMARY_DEVICE)
213	{
214	dprintf(("Found primary device. err %d\n", GetLastError ()));
215	DevPrimaryNum = DevNum;
216	bFetchDevice = TRUE;
217	}
218	else if (!(DisplayDevice.StateFlags & DISPLAY_DEVICE_MIRRORING_DRIVER))
219	{
220
221	dprintf(("Found secondary device. err %d\n", GetLastError ()));
222	bFetchDevice = TRUE;
223	}
224
225	if (bFetchDevice)
226	{
227	if (DevNum >= NumDevices)
228	{
229	dprintf(("%d >= %d\n", NumDevices, DevNum));
230	return FALSE;
231	}
232
233	paDisplayDevices[DevNum] = DisplayDevice;
234
235	ZeroMemory(&paDeviceModes[DevNum], sizeof(DEVMODE));
236	paDeviceModes[DevNum].dmSize = sizeof(DEVMODE);
237	if (!EnumDisplaySettings((LPSTR)DisplayDevice.DeviceName,
238	ENUM_REGISTRY_SETTINGS, &paDeviceModes[DevNum]))
239	{
240	dprintf(("EnumDisplaySettings err %d\n", GetLastError ()));
241	return FALSE;
242	}
243
244	dprintf(("%dx%d at %d,%d\n",
245	paDeviceModes[DevNum].dmPelsWidth,
246	paDeviceModes[DevNum].dmPelsHeight,
247	paDeviceModes[DevNum].dmPosition.x,
248	paDeviceModes[DevNum].dmPosition.y));
249
250	paRects[DevNum].left = paDeviceModes[DevNum].dmPosition.x;
251	paRects[DevNum].top = paDeviceModes[DevNum].dmPosition.y;
252	paRects[DevNum].right = paDeviceModes[DevNum].dmPosition.x + paDeviceModes[DevNum].dmPelsWidth;
253	paRects[DevNum].bottom = paDeviceModes[DevNum].dmPosition.y + paDeviceModes[DevNum].dmPelsHeight;
254	DevNum++;
255	}
256
257	ZeroMemory(&DisplayDevice, sizeof(DISPLAY_DEVICE));
258	DisplayDevice.cb = sizeof(DISPLAY_DEVICE);
259	i++;
260	}
261
262	if (Width == 0)
263	{
264	Width = paRects[Id].right - paRects[Id].left;
265	}
266
267	if (Height == 0)
268	{
269	Height = paRects[Id].bottom - paRects[Id].top;
270	}
271
272	/* Check whether a mode reset or a change is requested. */
273	if ( !fModeReset
274	&& paRects[Id].right - paRects[Id].left == Width
275	&& paRects[Id].bottom - paRects[Id].top == Height
276	&& paDeviceModes[Id].dmBitsPerPel == BitsPerPixel)
277	{
278	dprintf(("VBoxDisplayThread : already at desired resolution.\n"));
279	return FALSE;
280	}
281
282	resizeRect(paRects, NumDevices, DevPrimaryNum, Id, Width, Height);
283	#ifdef dprintf
284	for (i = 0; i < NumDevices; i++)
285	{
286	dprintf(("[%d]: %d,%d %dx%d\n",
287	i, paRects[i].left, paRects[i].top,
288	paRects[i].right - paRects[i].left,
289	paRects[i].bottom - paRects[i].top));
290	}
291	#endif /* dprintf */
292
293	/* Without this, Windows will not ask the miniport for its
294	* mode table but uses an internal cache instead.
295	*/
296	DEVMODE tempDevMode;
297	ZeroMemory (&tempDevMode, sizeof (tempDevMode));
298	tempDevMode.dmSize = sizeof(DEVMODE);
299	EnumDisplaySettings(NULL, 0xffffff, &tempDevMode);
300
301	/* Assign the new rectangles to displays. */
302	for (i = 0; i < NumDevices; i++)
303	{
304	paDeviceModes[i].dmPosition.x = paRects[i].left;
305	paDeviceModes[i].dmPosition.y = paRects[i].top;
306	paDeviceModes[i].dmPelsWidth = paRects[i].right - paRects[i].left;
307	paDeviceModes[i].dmPelsHeight = paRects[i].bottom - paRects[i].top;
308
309	paDeviceModes[i].dmFields = DM_POSITION \| DM_PELSHEIGHT \| DM_PELSWIDTH;
310
311	if ( i == Id
312	&& BitsPerPixel != 0)
313	{
314	paDeviceModes[i].dmFields \|= DM_BITSPERPEL;
315	paDeviceModes[i].dmBitsPerPel = BitsPerPixel;
316	}
317
318	dprintf(("calling pfnChangeDisplaySettingsEx %x\n", gCtx.pfnChangeDisplaySettingsEx));
319
320	gCtx.pfnChangeDisplaySettingsEx((LPSTR)paDisplayDevices[i].DeviceName,
321	&paDeviceModes[i], NULL, CDS_NORESET \| CDS_UPDATEREGISTRY, NULL);
322
323	dprintf(("ChangeDisplaySettings position err %d\n", GetLastError ()));
324	}
325
326	/* A second call to ChangeDisplaySettings updates the monitor. */
327	LONG status = ChangeDisplaySettings(NULL, 0);
328	dprintf(("ChangeDisplaySettings update status %d\n", status));
329	if (status == DISP_CHANGE_SUCCESSFUL \|\| status == DISP_CHANGE_BADMODE)
330	{
331	/* Successfully set new video mode or our driver can not set the requested mode. Stop trying. */
332	return FALSE;
333	}
334
335	/* Retry the request. */
336	return TRUE;
337	}
338
339	/**
340	* Thread function to wait for and process display change
341	* requests
342	*/
343	unsigned __stdcall VBoxDisplayThread (void *pInstance)
344	{
345	VBOXDISPLAYCONTEXT pCtx = (VBOXDISPLAYCONTEXT )pInstance;
346	HANDLE gVBoxDriver = pCtx->pEnv->hDriver;
347	bool fTerminate = false;
348	VBoxGuestFilterMaskInfo maskInfo;
349	DWORD cbReturned;
350
351	maskInfo.u32OrMask = VMMDEV_EVENT_DISPLAY_CHANGE_REQUEST;
352	maskInfo.u32NotMask = 0;
353	if (DeviceIoControl (gVBoxDriver, IOCTL_VBOXGUEST_CTL_FILTER_MASK, &maskInfo, sizeof (maskInfo), NULL, 0, &cbReturned, NULL))
354	{
355	dprintf(("VBoxDisplayThread : DeviceIOControl(CtlMask - or) succeeded\n"));
356	}
357	else
358	{
359	dprintf(("VBoxDisplayThread : DeviceIOControl(CtlMask) failed, DisplayChangeThread exited\n"));
360	return -1;
361	}
362
363	do
364	{
365	/* wait for a display change event */
366	VBoxGuestWaitEventInfo waitEvent;
367	waitEvent.u32TimeoutIn = 1000;
368	waitEvent.u32EventMaskIn = VMMDEV_EVENT_DISPLAY_CHANGE_REQUEST;
369	if (DeviceIoControl(gVBoxDriver, IOCTL_VBOXGUEST_WAITEVENT, &waitEvent, sizeof(waitEvent), &waitEvent, sizeof(waitEvent), &cbReturned, NULL))
370	{
371	dprintf(("VBoxDisplayThread : DeviceIOControl succeded\n"));
372
373	/* are we supposed to stop? */
374	if (WaitForSingleObject(pCtx->pEnv->hStopEvent, 0) == WAIT_OBJECT_0)
375	break;
376
377	dprintf(("VBoxDisplayThread : checking event\n"));
378
379	/* did we get the right event? */
380	if (waitEvent.u32EventFlagsOut & VMMDEV_EVENT_DISPLAY_CHANGE_REQUEST)
381	{
382	dprintf(("VBoxDisplayThread : going to get display change information.\n"));
383
384	/* We got at least one event. Read the requested resolution
385	* and try to set it until success. New events will not be seen
386	* but a new resolution will be read in this poll loop.
387	*/
388	for (;;)
389	{
390	/* get the display change request */
391	VMMDevDisplayChangeRequest2 displayChangeRequest = {0};
392	displayChangeRequest.header.size = sizeof(VMMDevDisplayChangeRequest2);
393	displayChangeRequest.header.version = VMMDEV_REQUEST_HEADER_VERSION;
394	displayChangeRequest.header.requestType = VMMDevReq_GetDisplayChangeRequest2;
395	displayChangeRequest.eventAck = VMMDEV_EVENT_DISPLAY_CHANGE_REQUEST;
396	BOOL fDisplayChangeQueried = DeviceIoControl(gVBoxDriver, IOCTL_VBOXGUEST_VMMREQUEST, &displayChangeRequest, sizeof(VMMDevDisplayChangeRequest2),
397	&displayChangeRequest, sizeof(VMMDevDisplayChangeRequest2), &cbReturned, NULL);
398	if (!fDisplayChangeQueried)
399	{
400	/* Try the old version of the request for old VBox hosts. */
401	displayChangeRequest.header.size = sizeof(VMMDevDisplayChangeRequest);
402	displayChangeRequest.header.version = VMMDEV_REQUEST_HEADER_VERSION;
403	displayChangeRequest.header.requestType = VMMDevReq_GetDisplayChangeRequest;
404	displayChangeRequest.eventAck = VMMDEV_EVENT_DISPLAY_CHANGE_REQUEST;
405	fDisplayChangeQueried = DeviceIoControl(gVBoxDriver, IOCTL_VBOXGUEST_VMMREQUEST, &displayChangeRequest, sizeof(VMMDevDisplayChangeRequest),
406	&displayChangeRequest, sizeof(VMMDevDisplayChangeRequest), &cbReturned, NULL);
407	displayChangeRequest.display = 0;
408	}
409
410	if (fDisplayChangeQueried)
411	{
412	dprintf(("VBoxDisplayThread : VMMDevReq_GetDisplayChangeRequest2: %dx%dx%d at %d\n", displayChangeRequest.xres, displayChangeRequest.yres, displayChangeRequest.bpp, displayChangeRequest.display));
413
414	/* Horizontal resolution must be a multiple of 8, round down. */
415	displayChangeRequest.xres &= 0xfff8;
416
417	/*
418	* Only try to change video mode if the active display driver is VBox additions.
419	*/
420	if (isVBoxDisplayDriverActive (pCtx))
421	{
422	dprintf(("VBoxDisplayThread : Display driver is active!\n"));
423
424	if (pCtx->pfnChangeDisplaySettingsEx != 0)
425	{
426	dprintf(("VBoxDisplayThread : Detected W2K or later."));
427
428	/* W2K or later. */
429	if (!ResizeDisplayDevice(displayChangeRequest.display,
430	displayChangeRequest.xres,
431	displayChangeRequest.yres,
432	displayChangeRequest.bpp))
433	{
434	break;
435	}
436	}
437	else
438	{
439	dprintf(("VBoxDisplayThread : Detected NT.\n"));
440
441	/* Single monitor NT. */
442	DEVMODE devMode;
443	memset (&devMode, 0, sizeof (devMode));
444	devMode.dmSize = sizeof(DEVMODE);
445
446	/* get the current screen setup */
447	if (EnumDisplaySettings(NULL, ENUM_REGISTRY_SETTINGS, &devMode))
448	{
449	dprintf(("VBoxDisplayThread : Current mode: %dx%dx%d at %d,%d\n", devMode.dmPelsWidth, devMode.dmPelsHeight, devMode.dmBitsPerPel, devMode.dmPosition.x, devMode.dmPosition.y));
450
451	/* Check whether a mode reset or a change is requested. */
452	if (displayChangeRequest.xres \|\| displayChangeRequest.yres \|\| displayChangeRequest.bpp)
453	{
454	/* A change is requested.
455	* Set values which are not to be changed to the current values.
456	*/
457	if (!displayChangeRequest.xres)
458	displayChangeRequest.xres = devMode.dmPelsWidth;
459	if (!displayChangeRequest.yres)
460	displayChangeRequest.yres = devMode.dmPelsHeight;
461	if (!displayChangeRequest.bpp)
462	displayChangeRequest.bpp = devMode.dmBitsPerPel;
463	}
464	else
465	{
466	/* All zero values means a forced mode reset. Do nothing. */
467	dprintf(("VBoxDisplayThread : Forced mode reset.\n"));
468	}
469
470	/* Verify that the mode is indeed changed. */
471	if ( devMode.dmPelsWidth == displayChangeRequest.xres
472	&& devMode.dmPelsHeight == displayChangeRequest.yres
473	&& devMode.dmBitsPerPel == displayChangeRequest.bpp)
474	{
475	dprintf(("VBoxDisplayThread : already at desired resolution.\n"));
476	break;
477	}
478
479	// without this, Windows will not ask the miniport for its
480	// mode table but uses an internal cache instead
481	DEVMODE tempDevMode = {0};
482	tempDevMode.dmSize = sizeof(DEVMODE);
483	EnumDisplaySettings(NULL, 0xffffff, &tempDevMode);
484
485	/* adjust the values that are supposed to change */
486	if (displayChangeRequest.xres)
487	devMode.dmPelsWidth = displayChangeRequest.xres;
488	if (displayChangeRequest.yres)
489	devMode.dmPelsHeight = displayChangeRequest.yres;
490	if (displayChangeRequest.bpp)
491	devMode.dmBitsPerPel = displayChangeRequest.bpp;
492
493	dprintf(("VBoxDisplayThread : setting the new mode %dx%dx%d\n", devMode.dmPelsWidth, devMode.dmPelsHeight, devMode.dmBitsPerPel));
494
495	/* set the new mode */
496	LONG status = ChangeDisplaySettings(&devMode, CDS_UPDATEREGISTRY);
497	if (status != DISP_CHANGE_SUCCESSFUL)
498	{
499	dprintf(("VBoxDisplayThread : error from ChangeDisplaySettings: %d\n", status));
500
501	if (status == DISP_CHANGE_BADMODE)
502	{
503	/* Our driver can not set the requested mode. Stop trying. */
504	break;
505	}
506	}
507	else
508	{
509	/* Successfully set new video mode. */
510	break;
511	}
512	}
513	else
514	{
515	dprintf(("VBoxDisplayThread : error from EnumDisplaySettings: %d\n", GetLastError ()));
516	break;
517	}
518	}
519	}
520	else
521	{
522	dprintf(("VBoxDisplayThread : vboxDisplayDriver is not active.\n"));
523	}
524
525	/* Retry the change a bit later. */
526	/* are we supposed to stop? */
527	if (WaitForSingleObject(pCtx->pEnv->hStopEvent, 1000) == WAIT_OBJECT_0)
528	{
529	fTerminate = true;
530	break;
531	}
532	}
533	else
534	{
535	dprintf(("VBoxDisplayThread : error from DeviceIoControl IOCTL_VBOXGUEST_VMMREQUEST\n"));
536	/* sleep a bit to not eat too much CPU while retrying */
537	/* are we supposed to stop? */
538	if (WaitForSingleObject(pCtx->pEnv->hStopEvent, 50) == WAIT_OBJECT_0)
539	{
540	fTerminate = true;
541	break;
542	}
543	}
544	}
545	}
546	} else
547	{
548	dprintf(("VBoxDisplayThread : error 0 from DeviceIoControl IOCTL_VBOXGUEST_WAITEVENT\n"));
549	/* sleep a bit to not eat too much CPU in case the above call always fails */
550	if (WaitForSingleObject(pCtx->pEnv->hStopEvent, 10) == WAIT_OBJECT_0)
551	{
552	fTerminate = true;
553	break;
554	}
555	}
556	} while (!fTerminate);
557
558	maskInfo.u32OrMask = 0;
559	maskInfo.u32NotMask = VMMDEV_EVENT_DISPLAY_CHANGE_REQUEST;
560	if (DeviceIoControl (gVBoxDriver, IOCTL_VBOXGUEST_CTL_FILTER_MASK, &maskInfo, sizeof (maskInfo), NULL, 0, &cbReturned, NULL))
561	{
562	dprintf(("VBoxDisplayThread : DeviceIOControl(CtlMask - not) succeeded\n"));
563	}
564	else
565	{
566	dprintf(("VBoxDisplayThread : DeviceIOControl(CtlMask) failed\n"));
567	}
568
569	dprintf(("VBoxDisplayThread : finished display change request thread\n"));
570	return 0;
571	}

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

source: vbox/trunk/src/VBox/Additions/WINNT/VBoxService/VBoxDisplay.cpp@ 8155

Download in other formats: