/*++
* @name DxEngSetDeviceGammaRamp
* @implemented
*
* The function DxEngSetDeviceGammaRamp sets gamma ramp from dxg.sys
* @param HDEV hPDev
* The hdev
*
* @param PGAMMARAMP Ramp
* Value to change gamma ramp to.
*
* @param BOOL Test
* Whether gamma should be tested. TRUE to test, FALSE to not test.
*
* @return
*Returns TRUE for success, FALSE for failure.
*
* @remarks.
* None
*
*--*/
BOOLEAN
APIENTRY
DxEngSetDeviceGammaRamp(HDEV hPDev, PGAMMARAMP Ramp, BOOL Test)
{
DPRINT1("ReactX Calling : DxEngSetDeviceGammaRamp\n");
return IntSetDeviceGammaRamp(hPDev, Ramp, Test);
}
BOOL
APIENTRY
NtGdiSetDeviceGammaRamp(HDC hDC,
LPVOID Ramp)
{
BOOL Ret;
PDC dc;
NTSTATUS Status = STATUS_SUCCESS;
PGAMMARAMP SafeRamp;
if (!Ramp) return FALSE;
dc = DC_LockDc(hDC);
if (!dc)
{
EngSetLastError(ERROR_INVALID_HANDLE);
return FALSE;
}
SafeRamp = ExAllocatePoolWithTag(PagedPool, sizeof(GAMMARAMP), GDITAG_ICM);
if (!SafeRamp)
{
DC_UnlockDc(dc);
EngSetLastError(STATUS_NO_MEMORY);
return FALSE;
}
_SEH2_TRY
{
ProbeForRead( Ramp,
sizeof(PVOID),
1);
RtlCopyMemory( SafeRamp,
Ramp,
sizeof(GAMMARAMP));
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
Status = _SEH2_GetExceptionCode();
}
_SEH2_END;
if (!NT_SUCCESS(Status))
{
DC_UnlockDc(dc);
ExFreePoolWithTag(SafeRamp, GDITAG_ICM);
SetLastNtError(Status);
return FALSE;
}
Ret = IntSetDeviceGammaRamp((HDEV)dc->ppdev, SafeRamp, TRUE);
DC_UnlockDc(dc);
ExFreePoolWithTag(SafeRamp, GDITAG_ICM);
return Ret;
}
