[fireball] 29436: - Inspired by 22169: * Update GetRegistryPath * Get SetupDevMode from trunk's 29435 dc.c * Copy GetVideoDeviceName and IntChangeDisplaySettings from trunk's 29435 dc.c - This solves the weird font + video mode issues (vmware video driver, for example) in this branch.
7 Oct
2007
7 Oct
'07
1:11 p.m.
Author: fireball
Date: Sun Oct 7 17:11:34 2007
New Revision: 29436
URL: http://svn.reactos.org/svn/reactos?rev=29436&view=rev
Log:
- Inspired by 22169:
* Update GetRegistryPath
* Get SetupDevMode from trunk's 29435 dc.c
* Copy GetVideoDeviceName and IntChangeDisplaySettings from trunk's 29435 dc.c
- This solves the weird font + video mode issues (vmware video driver, for example) in
this branch.
Modified:
branches/win32k-stable/reactos/subsystems/win32/win32k/objects/dc.c
Modified: branches/win32k-stable/reactos/subsystems/win32/win32k/objects/dc.c
URL:
http://svn.reactos.org/svn/reactos/branches/win32k-stable/reactos/subsystem…
==============================================================================
--- branches/win32k-stable/reactos/subsystems/win32/win32k/objects/dc.c (original)
+++ branches/win32k-stable/reactos/subsystems/win32/win32k/objects/dc.c Sun Oct 7
17:11:34 2007
@@ -264,14 +264,14 @@
return hNewDC;
}
-static BOOL FASTCALL
+static BOOLEAN FASTCALL
GetRegistryPath(PUNICODE_STRING RegistryPath, ULONG DisplayNumber)
{
RTL_QUERY_REGISTRY_TABLE QueryTable[2];
WCHAR DeviceNameBuffer[20];
NTSTATUS Status;
- swprintf(DeviceNameBuffer, L"\\Device\\Video%d", DisplayNumber);
+ swprintf(DeviceNameBuffer, L"\\Device\\Video%lu", DisplayNumber);
RtlInitUnicodeString(RegistryPath, NULL);
RtlZeroMemory(QueryTable, sizeof(QueryTable));
QueryTable[0].Flags = RTL_QUERY_REGISTRY_REQUIRED | RTL_QUERY_REGISTRY_DIRECT;
@@ -285,11 +285,11 @@
NULL);
if (! NT_SUCCESS(Status))
{
- DPRINT1("No \\Device\\Video%d value in DEVICEMAP\\VIDEO found\n",
DisplayNumber);
+ DPRINT1("No \\Device\\Video%lu value in DEVICEMAP\\VIDEO found\n",
DisplayNumber);
return FALSE;
}
- DPRINT("RegistryPath %S\n", RegistryPath->Buffer);
+ DPRINT("RegistryPath %wZ\n", RegistryPath);
return TRUE;
}
@@ -380,103 +380,48 @@
static BOOL FASTCALL
SetupDevMode(PDEVMODEW DevMode, ULONG DisplayNumber)
{
- static WCHAR RegistryMachineSystem[] = L"\\REGISTRY\\MACHINE\\SYSTEM\\";
- static WCHAR CurrentControlSet[] = L"CURRENTCONTROLSET\\";
- static WCHAR ControlSet[] = L"CONTROLSET";
- static WCHAR Insert[] = L"Hardware
Profiles\\Current\\System\\CurrentControlSet\\";
UNICODE_STRING RegistryPath;
- BOOL Valid;
- PWCHAR AfterControlSet;
- PWCHAR ProfilePath;
RTL_QUERY_REGISTRY_TABLE QueryTable[2];
NTSTATUS Status;
-
- if (! GetRegistryPath(&RegistryPath, DisplayNumber))
+ BOOLEAN Valid = TRUE;
+
+ if (!GetRegistryPath(&RegistryPath, DisplayNumber))
{
DPRINT("GetRegistryPath failed\n");
return FALSE;
}
- Valid = (0 == _wcsnicmp(RegistryPath.Buffer, RegistryMachineSystem,
- wcslen(RegistryMachineSystem)));
- if (Valid)
- {
- AfterControlSet = RegistryPath.Buffer + wcslen(RegistryMachineSystem);
- if (0 == _wcsnicmp(AfterControlSet, CurrentControlSet, wcslen(CurrentControlSet)))
+ RtlZeroMemory(QueryTable, sizeof(QueryTable));
+ QueryTable[0].QueryRoutine = DevModeCallback;
+ QueryTable[0].Flags = 0;
+ QueryTable[0].Name = NULL;
+ QueryTable[0].EntryContext = NULL;
+ QueryTable[0].DefaultType = REG_NONE;
+ QueryTable[0].DefaultData = NULL;
+ QueryTable[0].DefaultLength = 0;
+
+ Status = RtlQueryRegistryValues(RTL_REGISTRY_ABSOLUTE,
+ RegistryPath.Buffer,
+ QueryTable,
+ DevMode,
+ NULL);
+ if (! NT_SUCCESS(Status))
+ {
+ DPRINT("RtlQueryRegistryValues for %wZ failed with status 0x%08x\n",
+ &RegistryPath, Status);
+ Valid = FALSE;
+ }
+ else
+ {
+ DPRINT("dmBitsPerPel %d dmDisplayFrequency %d dmPelsWidth %d dmPelsHeight
%d\n",
+ DevMode->dmBitsPerPel, DevMode->dmDisplayFrequency,
+ DevMode->dmPelsWidth, DevMode->dmPelsHeight);
+ if (0 == DevMode->dmBitsPerPel || 0 == DevMode->dmDisplayFrequency
+ || 0 == DevMode->dmPelsWidth || 0 == DevMode->dmPelsHeight)
{
- AfterControlSet += wcslen(CurrentControlSet);
- }
- else if (0 == _wcsnicmp(AfterControlSet, ControlSet, wcslen(ControlSet)))
- {
- AfterControlSet += wcslen(ControlSet);
- while (L'0' <= *AfterControlSet && L'9' <=
*AfterControlSet)
- {
- AfterControlSet++;
- }
- Valid = (L'\\' == *AfterControlSet);
- AfterControlSet++;
- }
- else
- {
+ DPRINT("Not all required devmode members are set\n");
Valid = FALSE;
}
- }
-
- if (Valid)
- {
- ProfilePath = ExAllocatePoolWithTag(PagedPool,
- (wcslen(RegistryPath.Buffer) +
- wcslen(Insert) + 1) * sizeof(WCHAR),
- TAG_DC);
- if (NULL != ProfilePath)
- {
- wcsncpy(ProfilePath, RegistryPath.Buffer, AfterControlSet -
RegistryPath.Buffer);
- wcscpy(ProfilePath + (AfterControlSet - RegistryPath.Buffer), Insert);
- wcscat(ProfilePath, AfterControlSet);
-
- RtlZeroMemory(QueryTable, sizeof(QueryTable));
- QueryTable[0].QueryRoutine = DevModeCallback;
- QueryTable[0].Flags = 0;
- QueryTable[0].Name = NULL;
- QueryTable[0].EntryContext = NULL;
- QueryTable[0].DefaultType = REG_NONE;
- QueryTable[0].DefaultData = NULL;
- QueryTable[0].DefaultLength = 0;
-
- Status = RtlQueryRegistryValues(RTL_REGISTRY_ABSOLUTE,
- ProfilePath,
- QueryTable,
- DevMode,
- NULL);
- if (! NT_SUCCESS(Status))
- {
- DPRINT("RtlQueryRegistryValues for %S failed with status
0x%08x\n",
- ProfilePath, Status);
- Valid = FALSE;
- }
- else
- {
- DPRINT("dmBitsPerPel %d dmDisplayFrequency %d dmPelsWidth %d
dmPelsHeight %d\n",
- DevMode->dmBitsPerPel, DevMode->dmDisplayFrequency,
- DevMode->dmPelsWidth, DevMode->dmPelsHeight);
- if (0 == DevMode->dmBitsPerPel || 0 == DevMode->dmDisplayFrequency
- || 0 == DevMode->dmPelsWidth || 0 == DevMode->dmPelsHeight)
- {
- DPRINT("Not all required devmode members are set\n");
- Valid = FALSE;
- }
- }
-
- ExFreePool(ProfilePath);
- }
- else
- {
- Valid = FALSE;
- }
- }
- else
- {
- DPRINT1("Unparsable registry path %S in DEVICEMAP\\VIDEO0",
RegistryPath.Buffer);
}
RtlFreeUnicodeString(&RegistryPath);
@@ -2721,6 +2666,137 @@
return TRUE;
}
+
+static NTSTATUS FASTCALL
+GetVideoDeviceName(
+ OUT PUNICODE_STRING VideoDeviceName,
+ IN PCUNICODE_STRING DisplayDevice) /* ex: "\.\DISPLAY1" or
"\??\DISPLAY1" */
+{
+ UNICODE_STRING Prefix = RTL_CONSTANT_STRING(L"\\??\\");
+ UNICODE_STRING ObjectName;
+ UNICODE_STRING KernelModeName = { 0, };
+ OBJECT_ATTRIBUTES ObjectAttributes;
+ USHORT LastSlash;
+ ULONG Length;
+ HANDLE LinkHandle = NULL;
+ NTSTATUS Status;
+
+ RtlInitUnicodeString(VideoDeviceName, NULL);
+
+ /* Get device name (DisplayDevice is "\.\xxx") */
+ for (LastSlash = DisplayDevice->Length / sizeof(WCHAR); LastSlash > 0;
LastSlash--)
+ {
+ if (DisplayDevice->Buffer[LastSlash - 1] == L'\\')
+ break;
+ }
+
+ if (LastSlash == 0)
+ {
+ DPRINT1("Invalid device name '%wZ'\n", DisplayDevice);
+ Status = STATUS_OBJECT_NAME_INVALID;
+ goto cleanup;
+ }
+ ObjectName = *DisplayDevice;
+ ObjectName.Length -= LastSlash * sizeof(WCHAR);
+ ObjectName.MaximumLength -= LastSlash * sizeof(WCHAR);
+ ObjectName.Buffer += LastSlash;
+
+ /* Create "\??\xxx" (ex: "\??\DISPLAY1") */
+ KernelModeName.MaximumLength = Prefix.Length + ObjectName.Length +
sizeof(UNICODE_NULL);
+ KernelModeName.Buffer = ExAllocatePoolWithTag(PagedPool,
+ KernelModeName.MaximumLength,
+ TAG_DC);
+ if (!KernelModeName.Buffer)
+ {
+ Status = STATUS_NO_MEMORY;
+ goto cleanup;
+ }
+ RtlCopyUnicodeString(&KernelModeName, &Prefix);
+ Status = RtlAppendUnicodeStringToString(&KernelModeName, &ObjectName);
+ if (!NT_SUCCESS(Status))
+ goto cleanup;
+
+ /* Open \??\xxx (ex: "\??\DISPLAY1") */
+ InitializeObjectAttributes(&ObjectAttributes,
+ &KernelModeName,
+ OBJ_KERNEL_HANDLE,
+ NULL,
+ NULL);
+ Status = ZwOpenSymbolicLinkObject(&LinkHandle,
+ GENERIC_READ,
+ &ObjectAttributes);
+ if (!NT_SUCCESS(Status))
+ {
+ DPRINT1("Unable to open symbolic link %wZ (Status 0x%08lx)\n",
&KernelModeName, Status);
+ Status = STATUS_NO_SUCH_DEVICE;
+ goto cleanup;
+ }
+
+ Status = ZwQuerySymbolicLinkObject(LinkHandle, VideoDeviceName, &Length);
+ if (!NT_SUCCESS(Status) && Status != STATUS_BUFFER_TOO_SMALL)
+ {
+ DPRINT1("Unable to query symbolic link %wZ (Status 0x%08lx)\n",
&KernelModeName, Status);
+ Status = STATUS_NO_SUCH_DEVICE;
+ goto cleanup;
+ }
+ VideoDeviceName->MaximumLength = Length;
+ VideoDeviceName->Buffer = ExAllocatePoolWithTag(PagedPool,
+ VideoDeviceName->MaximumLength +
sizeof(UNICODE_NULL),
+ TAG_DC);
+ if (!VideoDeviceName->Buffer)
+ {
+ Status = STATUS_NO_MEMORY;
+ goto cleanup;
+ }
+ Status = ZwQuerySymbolicLinkObject(LinkHandle, VideoDeviceName, NULL);
+ VideoDeviceName->Buffer[VideoDeviceName->MaximumLength / sizeof(WCHAR) - 1] =
UNICODE_NULL;
+ if (!NT_SUCCESS(Status))
+ {
+ DPRINT1("Unable to query symbolic link %wZ (Status 0x%08lx)\n",
&KernelModeName, Status);
+ Status = STATUS_NO_SUCH_DEVICE;
+ goto cleanup;
+ }
+ Status = STATUS_SUCCESS;
+
+cleanup:
+ if (!NT_SUCCESS(Status) && VideoDeviceName->Buffer)
+ ExFreePoolWithTag(VideoDeviceName->Buffer, TAG_DC);
+ if (KernelModeName.Buffer)
+ ExFreePoolWithTag(KernelModeName.Buffer, TAG_DC);
+ if (LinkHandle)
+ ZwClose(LinkHandle);
+ return Status;
+}
+
+static NTSTATUS FASTCALL
+GetVideoRegistryKey(
+ OUT PUNICODE_STRING RegistryPath,
+ IN PCUNICODE_STRING DeviceName) /* ex: "\Device\Video0" */
+{
+ RTL_QUERY_REGISTRY_TABLE QueryTable[2];
+ NTSTATUS Status;
+
+ RtlInitUnicodeString(RegistryPath, NULL);
+ RtlZeroMemory(QueryTable, sizeof(QueryTable));
+ QueryTable[0].Flags = RTL_QUERY_REGISTRY_REQUIRED | RTL_QUERY_REGISTRY_DIRECT;
+ QueryTable[0].Name = DeviceName->Buffer;
+ QueryTable[0].EntryContext = RegistryPath;
+
+ Status = RtlQueryRegistryValues(RTL_REGISTRY_DEVICEMAP,
+ L"VIDEO",
+ QueryTable,
+ NULL,
+ NULL);
+ if (!NT_SUCCESS(Status))
+ {
+ DPRINT1("No %wZ value in DEVICEMAP\\VIDEO found (Status 0x%08lx)\n",
DeviceName, Status);
+ return STATUS_NO_SUCH_DEVICE;
+ }
+
+ DPRINT("RegistryPath %wZ\n", RegistryPath);
+ return STATUS_SUCCESS;
+}
+
LONG
FASTCALL
IntChangeDisplaySettings(
@@ -2736,7 +2812,7 @@
LONG Ret=0;
NTSTATUS Status ;
- DPRINT1("display flag : %x\n",dwflags);
+ DPRINT1("display flags : %x\n",dwflags);
if ((dwflags & CDS_UPDATEREGISTRY) == CDS_UPDATEREGISTRY)
{
@@ -2759,7 +2835,7 @@
if (dwflags == 0)
{
/* Dynamically change graphics mode */
- DPRINT1("flag 0 UNIMPLEMENT \n");
+ DPRINT1("flag 0 UNIMPLEMENTED\n");
return DISP_CHANGE_FAILED;
}
@@ -2767,26 +2843,23 @@
{
/* Test reslution */
dwflags &= ~CDS_TEST;
- DPRINT1("flag CDS_TEST UNIMPLEMENT");
+ DPRINT1("flag CDS_TEST UNIMPLEMENTED\n");
Ret = DISP_CHANGE_FAILED;
}
-
+
if ((dwflags & CDS_FULLSCREEN) == CDS_FULLSCREEN)
{
- DEVMODE lpDevMode;
+ DEVMODEW lpDevMode;
/* Full Screen */
dwflags &= ~CDS_FULLSCREEN;
- DPRINT1("flag CDS_FULLSCREEN partially implemented");
+ DPRINT1("flag CDS_FULLSCREEN partially implemented\n");
Ret = DISP_CHANGE_FAILED;
- lpDevMode.dmBitsPerPel =0;
- lpDevMode.dmPelsWidth =0;
- lpDevMode.dmPelsHeight =0;
- lpDevMode.dmDriverExtra =0;
-
- lpDevMode.dmSize = sizeof(DEVMODE);
- Status = IntEnumDisplaySettings(pDeviceName, ENUM_CURRENT_SETTINGS, &lpDevMode,
0);
- if (!NT_SUCCESS(Status)) return DISP_CHANGE_FAILED;
+ RtlZeroMemory(&lpDevMode, sizeof(DEVMODEW));
+ lpDevMode.dmSize = sizeof(DEVMODEW);
+
+ if (!IntEnumDisplaySettings(pDeviceName, ENUM_CURRENT_SETTINGS, &lpDevMode, 0))
+ return DISP_CHANGE_FAILED;
DPRINT1("Req Mode : %d x %d x %d\n",
DevMode->dmPelsWidth,DevMode->dmPelsHeight,DevMode->dmBitsPerPel);
DPRINT1("Current Mode : %d x %d x %d\n",
lpDevMode.dmPelsWidth,lpDevMode.dmPelsHeight, lpDevMode.dmBitsPerPel);
@@ -2795,148 +2868,126 @@
if ((lpDevMode.dmBitsPerPel == DevMode->dmBitsPerPel) &&
(lpDevMode.dmPelsWidth == DevMode->dmPelsWidth) &&
(lpDevMode.dmPelsHeight == DevMode->dmPelsHeight))
- Ret = DISP_CHANGE_SUCCESSFUL;
+ Ret = DISP_CHANGE_SUCCESSFUL;
}
if ((dwflags & CDS_VIDEOPARAMETERS) == CDS_VIDEOPARAMETERS)
- {
+ {
dwflags &= ~CDS_VIDEOPARAMETERS;
- if (lParam == NULL) Ret=DISP_CHANGE_BADPARAM;
- else
- {
- DPRINT1("flag CDS_VIDEOPARAMETERS UNIMPLEMENT");
- Ret = DISP_CHANGE_FAILED;
- }
-
- }
+ if (lParam == NULL)
+ Ret=DISP_CHANGE_BADPARAM;
+ else
+ {
+ DPRINT1("flag CDS_VIDEOPARAMETERS UNIMPLEMENTED\n");
+ Ret = DISP_CHANGE_FAILED;
+ }
+
+ }
if ((dwflags & CDS_UPDATEREGISTRY) == CDS_UPDATEREGISTRY)
- {
-
- UNICODE_STRING ObjectName;
- UNICODE_STRING KernelModeName;
- WCHAR KernelModeNameBuffer[256];
- UNICODE_STRING RegistryKey;
- WCHAR RegistryKeyBuffer[512];
- PDEVICE_OBJECT DeviceObject;
- ULONG LastSlash;
- OBJECT_ATTRIBUTES ObjectAttributes;
- HANDLE DevInstRegKey;
- ULONG NewValue;
-
-
- DPRINT1("set CDS_UPDATEREGISTRY \n");
-
- dwflags &= ~CDS_UPDATEREGISTRY;
-
- /* Get device name (pDeviceName is "\.\xxx") */
- for (LastSlash = pDeviceName->Length / sizeof(WCHAR); LastSlash > 0;
LastSlash--)
- {
- if (pDeviceName->Buffer[LastSlash - 1] == L'\\')
- break;
- }
-
- if (LastSlash == 0) return DISP_CHANGE_RESTART;
- ObjectName = *pDeviceName;
- ObjectName.Length -= LastSlash * sizeof(WCHAR);
- ObjectName.MaximumLength -= LastSlash * sizeof(WCHAR);
- ObjectName.Buffer += LastSlash;
-
- KernelModeName.Length = 0;
- KernelModeName.MaximumLength = sizeof(KernelModeNameBuffer);
- KernelModeName.Buffer = KernelModeNameBuffer;
-
- /* Open \??\xxx (ex: "\??\DISPLAY1") */
- Status = RtlAppendUnicodeToString(&KernelModeName, L"\\??\\");
-
- if (!NT_SUCCESS(Status)) return DISP_CHANGE_FAILED;
- Status = RtlAppendUnicodeStringToString(&KernelModeName, &ObjectName);
-
- if (!NT_SUCCESS(Status)) return DISP_CHANGE_FAILED;
- Status = ObReferenceObjectByName(
- &KernelModeName,
- OBJ_CASE_INSENSITIVE,
- NULL,
- 0,
- IoDeviceObjectType,
- KernelMode,
- NULL,
- (PVOID*)&DeviceObject);
-
- if (!NT_SUCCESS(Status)) return DISP_CHANGE_FAILED;
- /* Get associated driver name (ex: "VBE") */
- for (LastSlash = DeviceObject->DriverObject->DriverName.Length / sizeof(WCHAR);
LastSlash > 0; LastSlash--)
- {
- if (DeviceObject->DriverObject->DriverName.Buffer[LastSlash - 1] ==
L'\\')
- break;
- }
-
- if (LastSlash == 0) { ObDereferenceObject(DeviceObject); return DISP_CHANGE_FAILED; }
- ObjectName = DeviceObject->DriverObject->DriverName;
- ObjectName.Length -= LastSlash * sizeof(WCHAR);
- ObjectName.MaximumLength -= LastSlash * sizeof(WCHAR);
- ObjectName.Buffer += LastSlash;
-
- RegistryKey.Length = 0;
- RegistryKey.MaximumLength = sizeof(RegistryKeyBuffer);
- RegistryKey.Buffer = RegistryKeyBuffer;
-
- /* Open registry key */
- Status = RtlAppendUnicodeToString(&RegistryKey,
- L"\\Registry\\Machine\\SYSTEM\\CurrentControlSet\\Hardware
Profiles\\Current\\System\\CurrentControlSet\\Services\\");
-
- if (!NT_SUCCESS(Status)) { ObDereferenceObject(DeviceObject); return
DISP_CHANGE_FAILED; }
- Status = RtlAppendUnicodeStringToString(&RegistryKey, &ObjectName);
-
- if (!NT_SUCCESS(Status)) { ObDereferenceObject(DeviceObject); return
DISP_CHANGE_FAILED; }
- Status = RtlAppendUnicodeToString(&RegistryKey,
- L"\\Device0");
-
- if (!NT_SUCCESS(Status)) { ObDereferenceObject(DeviceObject); return
DISP_CHANGE_FAILED; }
-
- InitializeObjectAttributes(&ObjectAttributes, &RegistryKey,
- OBJ_CASE_INSENSITIVE, NULL, NULL);
- Status = ZwOpenKey(&DevInstRegKey, GENERIC_READ | GENERIC_WRITE,
&ObjectAttributes);
- ObDereferenceObject(DeviceObject);
- if (!NT_SUCCESS(Status)) return DISP_CHANGE_FAILED;
-
- /* Update needed fields */
- if (NT_SUCCESS(Status) && DevMode->dmFields & DM_BITSPERPEL)
- {
- RtlInitUnicodeString(&RegistryKey, L"DefaultSettings.BitsPerPel");
- NewValue = DevMode->dmBitsPerPel;
- Status = ZwSetValueKey(DevInstRegKey, &RegistryKey, 0, REG_DWORD, &NewValue,
sizeof(NewValue));
- }
-
- if (NT_SUCCESS(Status) && DevMode->dmFields & DM_PELSWIDTH)
- {
- RtlInitUnicodeString(&RegistryKey, L"DefaultSettings.XResolution");
- NewValue = DevMode->dmPelsWidth;
- Status = ZwSetValueKey(DevInstRegKey, &RegistryKey, 0, REG_DWORD, &NewValue,
sizeof(NewValue));
- }
-
- if (NT_SUCCESS(Status) && DevMode->dmFields & DM_PELSHEIGHT)
- {
- RtlInitUnicodeString(&RegistryKey, L"DefaultSettings.YResolution");
- NewValue = DevMode->dmPelsHeight;
- Status = ZwSetValueKey(DevInstRegKey, &RegistryKey, 0, REG_DWORD, &NewValue,
sizeof(NewValue));
- }
-
- ZwClose(DevInstRegKey);
- if (NT_SUCCESS(Status))
- Ret = DISP_CHANGE_RESTART;
- else
- /* return DISP_CHANGE_NOTUPDATED when we can save to reg only vaild for NT */
- Ret = DISP_CHANGE_NOTUPDATED;
-
- }
-
- if (dwflags != 0)
+ {
+
+ UNICODE_STRING DeviceName;
+ UNICODE_STRING RegistryKey;
+ UNICODE_STRING InDeviceName;
+ OBJECT_ATTRIBUTES ObjectAttributes;
+ HANDLE DevInstRegKey;
+ ULONG NewValue;
+
+ DPRINT1("set CDS_UPDATEREGISTRY\n");
+
+ dwflags &= ~CDS_UPDATEREGISTRY;
+
+ /* Check if pDeviceName is NULL, we need to retrieve it */
+ if (pDeviceName == NULL)
+ {
+ WCHAR szBuffer[MAX_DRIVER_NAME];
+ PDC DC;
+ PWINDOW_OBJECT Wnd=NULL;
+ HWND hWnd;
+ HDC hDC;
+
+ hWnd = IntGetDesktopWindow();
+ if (!(Wnd = UserGetWindowObject(hWnd)))
+ {
+ return FALSE;
+ }
+
+ hDC = (HDC)UserGetWindowDC(Wnd);
+
+ DC = DC_LockDc(hDC);
+ if (NULL == DC)
+ {
+ return FALSE;
+ }
+ swprintf (szBuffer, L"\\\\.\\DISPLAY%lu", ((GDIDEVICE
*)DC->GDIDevice)->DisplayNumber);
+ DC_UnlockDc(DC);
+
+ RtlInitUnicodeString(&InDeviceName, szBuffer);
+ pDeviceName = &InDeviceName;
+ }
+
+ Status = GetVideoDeviceName(&DeviceName, pDeviceName);
+ if (!NT_SUCCESS(Status))
+ {
+ DPRINT1("Unable to get destination of '%wZ' (Status 0x%08lx)\n",
pDeviceName, Status);
+ return DISP_CHANGE_FAILED;
+ }
+ Status = GetVideoRegistryKey(&RegistryKey, &DeviceName);
+ if (!NT_SUCCESS(Status))
+ {
+ DPRINT1("Unable to get registry key for '%wZ' (Status
0x%08lx)\n", &DeviceName, Status);
+ ExFreePoolWithTag(DeviceName.Buffer, TAG_DC);
+ return DISP_CHANGE_FAILED;
+ }
+ ExFreePoolWithTag(DeviceName.Buffer, TAG_DC);
+
+ InitializeObjectAttributes(&ObjectAttributes, &RegistryKey,
+ OBJ_CASE_INSENSITIVE, NULL, NULL);
+ Status = ZwOpenKey(&DevInstRegKey, GENERIC_READ | GENERIC_WRITE,
&ObjectAttributes);
+ if (!NT_SUCCESS(Status))
+ {
+ DPRINT1("Unable to open registry key %wZ (Status 0x%08lx)\n",
&RegistryKey, Status);
+ ExFreePoolWithTag(RegistryKey.Buffer, TAG_DC);
+ return DISP_CHANGE_FAILED;
+ }
+ ExFreePoolWithTag(RegistryKey.Buffer, TAG_DC);
+
+ /* Update needed fields */
+ if (NT_SUCCESS(Status) && DevMode->dmFields & DM_BITSPERPEL)
+ {
+ RtlInitUnicodeString(&RegistryKey, L"DefaultSettings.BitsPerPel");
+ NewValue = DevMode->dmBitsPerPel;
+ Status = ZwSetValueKey(DevInstRegKey, &RegistryKey, 0, REG_DWORD,
&NewValue, sizeof(NewValue));
+ }
+
+ if (NT_SUCCESS(Status) && DevMode->dmFields & DM_PELSWIDTH)
+ {
+ RtlInitUnicodeString(&RegistryKey, L"DefaultSettings.XResolution");
+ NewValue = DevMode->dmPelsWidth;
+ Status = ZwSetValueKey(DevInstRegKey, &RegistryKey, 0, REG_DWORD,
&NewValue, sizeof(NewValue));
+ }
+
+ if (NT_SUCCESS(Status) && DevMode->dmFields & DM_PELSHEIGHT)
+ {
+ RtlInitUnicodeString(&RegistryKey, L"DefaultSettings.YResolution");
+ NewValue = DevMode->dmPelsHeight;
+ Status = ZwSetValueKey(DevInstRegKey, &RegistryKey, 0, REG_DWORD,
&NewValue, sizeof(NewValue));
+ }
+
+ ZwClose(DevInstRegKey);
+ if (NT_SUCCESS(Status))
+ Ret = DISP_CHANGE_RESTART;
+ else
+ /* return DISP_CHANGE_NOTUPDATED when we can save to reg only valid for NT */
+ Ret = DISP_CHANGE_NOTUPDATED;
+ }
+
+ if (dwflags != 0)
Ret = DISP_CHANGE_BADFLAGS;
return Ret;
}
-
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