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probe the pointer and some cleanup simplification

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svn path=/trunk/; revision=29251
This commit is contained in:
Timo Kreuzer 2007-09-27 17:25:40 +00:00
parent 466ad8f165
commit 9c009fef95
1 changed files with 7 additions and 17 deletions
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24
reactos/subsystems/win32/win32k/objects/dibobj.c
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@ -335,8 +335,8 @@ NtGdiSetDIBitsToDeviceInternal(
INT ret = 0;
NTSTATUS Status = STATUS_SUCCESS;
PDC pDC;
HBITMAP hSourceBitmap = NULL;
SURFOBJ *pDestSurf = NULL, *pSourceSurf = NULL;
HBITMAP hSourceBitmap;
SURFOBJ *pDestSurf, *pSourceSurf;
RECTL rcDest;
POINTL ptSource;
INT DIBWidth;
@ -377,6 +377,7 @@ NtGdiSetDIBitsToDeviceInternal(
/* Enter SEH, as the bits are user mode */
_SEH_TRY
{
ProbeForRead(Bits, DIBWidth * abs(bmi->bmiHeader.biHeight), 1);
hSourceBitmap = EngCreateBitmap(SourceSize,
DIBWidth,
BitmapFormat(bmi->bmiHeader.biBitCount, bmi->bmiHeader.biCompression),
@ -392,6 +393,7 @@ NtGdiSetDIBitsToDeviceInternal(
pSourceSurf = EngLockSurface((HSURF)hSourceBitmap);
if (!pSourceSurf)
{
EngDeleteSurface((HSURF)hSourceBitmap);
Status = STATUS_UNSUCCESSFUL;
_SEH_LEAVE;
}
@ -412,6 +414,8 @@ NtGdiSetDIBitsToDeviceInternal(
NULL,
ROP3_TO_ROP4(SRCCOPY));
EngUnlockSurface(pSourceSurf);
EngDeleteSurface((HSURF)hSourceBitmap);
}
_SEH_HANDLE
{
@ -425,21 +429,7 @@ NtGdiSetDIBitsToDeviceInternal(
ret = ScanLines;
}
if (pSourceSurf)
{
EngUnlockSurface(pSourceSurf);
}
if (hSourceBitmap)
{
EngDeleteSurface((HSURF)hSourceBitmap);
}
if (pDestSurf)
{
EngUnlockSurface(pDestSurf);
}
EngUnlockSurface(pDestSurf);
DC_UnlockDc(pDC);
return ret;