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Read the registry to set the wallpaper mode in in WinSta.

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svn path=/trunk/; revision=19541
This commit is contained in:
Brandon Turner
2005-11-25 04:14:59 +00:00
parent c605cb406b
commit 463a4180eb
1 changed files with 103 additions and 2 deletions
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reactos/subsys/win32k/ntuser/misc.c
+103 -2
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@@ -6,7 +6,7 @@
* FILE: subsys/win32k/ntuser/misc.c
* PROGRAMER: Ge van Geldorp ([email protected])
* REVISION HISTORY:
* 2003/05/22 Created
* 2003/05/22 CreatedStyleNum
*/
#include <w32k.h>
@@ -928,7 +928,18 @@ IntSystemParametersInfo(
the current wallpaper bitmap */
HBITMAP hOldBitmap, hNewBitmap;
ASSERT(pvParam);
UNICODE_STRING Key = RTL_CONSTANT_STRING(L"\\Registry\\User\\.Default\\Control Panel\\Desktop");
UNICODE_STRING Tile = RTL_CONSTANT_STRING(L"TileWallpaper");
UNICODE_STRING Style = RTL_CONSTANT_STRING(L"WallpaperStyle");
OBJECT_ATTRIBUTES KeyAttributes;
NTSTATUS Status;
HANDLE KeyHandle = NULL;
PKEY_VALUE_PARTIAL_INFORMATION KeyValuePartialInfo;
ULONG Length = 0;
ULONG ResLength = 0;
ULONG TileNum = 0;
ULONG StyleNum = 0;
hNewBitmap = *(HBITMAP*)pvParam;
if(hNewBitmap != NULL)
{
@@ -953,6 +964,96 @@ IntSystemParametersInfo(
/* delete the old wallpaper */
NtGdiDeleteObject(hOldBitmap);
}
/* Set the style */
/*default value is center */
WinStaObject->WallpaperMode = wmCenter;
/* find the tile value in the registry */
InitializeObjectAttributes(&KeyAttributes, &Key, OBJ_CASE_INSENSITIVE,
NULL, NULL);
ZwOpenKey(&KeyHandle, KEY_READ, &KeyAttributes);
Status = ZwQueryValueKey(KeyHandle, &Tile, KeyValuePartialInformation,
0, 0, &ResLength);
ResLength += sizeof(KEY_VALUE_PARTIAL_INFORMATION);
KeyValuePartialInfo = ExAllocatePoolWithTag(PagedPool, ResLength, TAG_STRING);
Length = ResLength;
if(!KeyValuePartialInfo)
{
NtClose(KeyHandle);
return 0;
}
Status = ZwQueryValueKey(KeyHandle, &Tile, KeyValuePartialInformation,
(PVOID)KeyValuePartialInfo, Length, &ResLength);
if(!NT_SUCCESS(Status) || (KeyValuePartialInfo->Type != REG_SZ))
{
NtClose(KeyHandle);
ExFreePool(KeyValuePartialInfo);
return 0;
}
Tile.Length = KeyValuePartialInfo->DataLength;
Tile.MaximumLength = KeyValuePartialInfo->DataLength;
Tile.Buffer = (PWSTR)KeyValuePartialInfo->Data;
Status = RtlUnicodeStringToInteger(&Tile, 0, &TileNum);
if(!NT_SUCCESS(Status))
{
TileNum = 0;
}
ExFreePool(KeyValuePartialInfo);
/* start over again and look for the style*/
ResLength = 0;
Status = ZwQueryValueKey(KeyHandle, &Style, KeyValuePartialInformation,
0, 0, &ResLength);
ResLength += sizeof(KEY_VALUE_PARTIAL_INFORMATION);
KeyValuePartialInfo = ExAllocatePoolWithTag(PagedPool, ResLength, TAG_STRING);
Length = ResLength;
if(!KeyValuePartialInfo)
{
NtClose(KeyHandle);
return 0;
}
Status = ZwQueryValueKey(KeyHandle, &Style, KeyValuePartialInformation,
(PVOID)KeyValuePartialInfo, Length, &ResLength);
if(!NT_SUCCESS(Status) || (KeyValuePartialInfo->Type != REG_SZ))
{
NtClose(KeyHandle);
ExFreePool(KeyValuePartialInfo);
return 0;
}
Style.Length = KeyValuePartialInfo->DataLength;
Style.MaximumLength = KeyValuePartialInfo->DataLength;
Style.Buffer = (PWSTR)KeyValuePartialInfo->Data;
Status = RtlUnicodeStringToInteger(&Style, 0, &StyleNum);
if(!NT_SUCCESS(Status))
{
StyleNum = 0;
}
ExFreePool(KeyValuePartialInfo);
/* Check the values we found in the registry */
if(TileNum && !StyleNum)
{
WinStaObject->WallpaperMode = wmTile;
}
else if(!TileNum && StyleNum == 2)
{
WinStaObject->WallpaperMode = wmStretch;
}
NtClose(KeyHandle);
break;
}
case SPI_GETDESKWALLPAPER: