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PaintDesktop(): print system version on desktop background

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svn path=/trunk/; revision=10870
This commit is contained in:
Martin Fuchs 2004-09-15 20:53:43 +00:00
parent e740fd1758
commit 0f892545b8
1 changed files with 102 additions and 7 deletions
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101
reactos/subsys/win32k/ntuser/desktop.c
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@ -16,7 +16,7 @@
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* $Id: desktop.c,v 1.20 2004/08/17 21:52:17 weiden Exp $
* $Id: desktop.c,v 1.21 2004/09/15 20:53:43 mf Exp $
*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel
@ -667,6 +667,44 @@ NtUserCloseDesktop(HDESK hDesktop)
return TRUE;
}
static int GetSystemVersionString(LPWSTR buffer)
{
RTL_OSVERSIONINFOEXW versionInfo;
int len;
versionInfo.dwOSVersionInfoSize = sizeof(RTL_OSVERSIONINFOEXW);
if (!NT_SUCCESS(RtlGetVersion((PRTL_OSVERSIONINFOW)&versionInfo)))
return 0;
if (versionInfo.dwMajorVersion <= 4)
len = swprintf(buffer,
L"ReactOS Version %d.%d %s Build %d",
versionInfo.dwMajorVersion, versionInfo.dwMinorVersion,
versionInfo.szCSDVersion, versionInfo.dwBuildNumber&0xFFFF);
else
len = swprintf(buffer,
L"ReactOS %s (Build %d)",
versionInfo.szCSDVersion, versionInfo.dwBuildNumber&0xFFFF);
return len;
}
static NTSTATUS STDCALL PaintDesktopVersionCallback(
IN PWSTR ValueName, IN ULONG ValueType,
IN PVOID ValueData, IN ULONG ValueLength,
IN PVOID Context, IN PVOID EntryContext
)
{
DPRINT("PaintDesktopVersionCallback ValueType=%d ValueLength=%d\n", ValueType, ValueLength);
if (ValueType==REG_DWORD && ValueLength==sizeof(DWORD))
*((DWORD*)Context) = *(DWORD*)ValueData;
return STATUS_SUCCESS;
}
/*
* NtUserPaintDesktop
*
@ -675,7 +713,7 @@ NtUserCloseDesktop(HDESK hDesktop)
* function is provided primarily for shell desktops.
*
* Parameters
* hdc
* hDC
* Handle to the device context.
*
* Status
@ -688,6 +726,13 @@ NtUserPaintDesktop(HDC hDC)
RECT Rect;
HBRUSH DesktopBrush, PreviousBrush;
HWND hWndDesktop;
BOOL doPatBlt = TRUE;
RTL_QUERY_REGISTRY_TABLE queryTable[2];
DWORD displayVersion;
NTSTATUS status;
int len;
PWINSTATION_OBJECT WinSta = PsGetWin32Thread()->Desktop->WindowStation;
IntGdiGetClipBox(hDC, &Rect);
@ -728,24 +773,74 @@ NtUserPaintDesktop(HDC hDC)
NtGdiPatBlt(hDC, Rect.left, Rect.top, Rect.right, Rect.bottom, PATCOPY);
NtGdiSelectObject(hDC, PreviousBrush);
}
else
doPatBlt = FALSE;
hOldBitmap = NtGdiSelectObject(hWallpaperDC, WinSta->hbmWallpaper);
NtGdiBitBlt(hDC, x, y, WinSta->cxWallpaper, WinSta->cyWallpaper, hWallpaperDC, 0, 0, SRCCOPY);
NtGdiSelectObject(hWallpaperDC, hOldBitmap);
NtGdiDeleteDC(hWallpaperDC);
if(x <= 0 && y <= 0) return TRUE;
}
}
}
if (doPatBlt) {
PreviousBrush = NtGdiSelectObject(hDC, DesktopBrush);
NtGdiPatBlt(hDC, Rect.left, Rect.top, Rect.right, Rect.bottom, PATCOPY);
NtGdiSelectObject(hDC, PreviousBrush);
}
/*
* Display system version on the desktop background
*/
RtlZeroMemory(queryTable, sizeof(queryTable));
queryTable[0].QueryRoutine = PaintDesktopVersionCallback;
queryTable[0].Name = L"PaintDesktopVersion";
queryTable[0].EntryContext = &displayVersion;
/* query the "PaintDesktopVersion" flag in the "Control Panel\Desktop" key */
status = RtlQueryRegistryValues(RTL_REGISTRY_USER, L"Control Panel\\Desktop", queryTable, NULL, NULL);
if (!NT_SUCCESS(status)) {
DPRINT1("RtlQueryRegistryValues failed for PaintDesktopVersion: status=%x\n", status);
displayVersion = 0;
}
DPRINT("PaintDesktopVersion=%d\n", displayVersion);
if (displayVersion) {
static WCHAR s_wszVersion[256] = {0};
RECT rect;
if (*s_wszVersion)
len = wcslen(s_wszVersion);
else
len = GetSystemVersionString(s_wszVersion);
if (len) {
if (!NtUserSystemParametersInfo(SPI_GETWORKAREA, 0, &rect, 0)) {
rect.right = NtUserGetSystemMetrics(SM_CXSCREEN);
rect.bottom = NtUserGetSystemMetrics(SM_CYSCREEN);
}
COLORREF color_old = NtGdiSetTextColor(hDC, RGB(255,255,255));
UINT align_old = NtGdiSetTextAlign(hDC, TA_RIGHT);
int mode_old = NtGdiSetBkMode(hDC, TRANSPARENT);
NtGdiTextOut(hDC, rect.right-16, rect.bottom-48, s_wszVersion, len);
NtGdiSetBkMode(hDC, mode_old);
NtGdiSetTextAlign(hDC, align_old);
NtGdiSetTextColor(hDC, color_old);
}
}
return TRUE;
}
/*
* NtUserSwitchDesktop
*