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reactos/reactos/subsys/win32k/objects/bitmaps.c
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/*
* ReactOS W32 Subsystem
* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003 ReactOS Team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/* $Id$ */
#include <w32k.h>
#define NDEBUG
#include <debug.h>
#define IN_RECT(r,x,y) \
( \
(x) >= (r).left && \
(y) >= (r).top && \
(x) < (r).right && \
(y) < (r).bottom \
)
BOOL STDCALL
NtGdiBitBlt(
HDC hDCDest,
INT XDest,
INT YDest,
INT Width,
INT Height,
HDC hDCSrc,
INT XSrc,
INT YSrc,
DWORD ROP)
{
PDC DCDest = NULL;
PDC DCSrc = NULL;
BITMAPOBJ *BitmapDest, *BitmapSrc;
RECTL DestRect;
POINTL SourcePoint, BrushOrigin;
BOOL Status;
XLATEOBJ *XlateObj = NULL;
HPALETTE SourcePalette = 0, DestPalette = 0;
PGDIBRUSHOBJ BrushObj;
GDIBRUSHINST BrushInst;
BOOL UsesSource = ROP3_USES_SOURCE(ROP);
BOOL UsesPattern = ROP3_USES_PATTERN(ROP);
DCDest = DC_LockDc(hDCDest);
if (NULL == DCDest)
{
DPRINT1("Invalid destination dc handle (0x%08x) passed to NtGdiBitBlt\n", hDCDest);
SetLastWin32Error(ERROR_INVALID_HANDLE);
return FALSE;
}
if (DCDest->IsIC)
{
DC_UnlockDc(DCDest);
/* Yes, Windows really returns TRUE in this case */
return TRUE;
}
if (UsesSource)
{
if (hDCSrc != hDCDest)
{
DCSrc = DC_LockDc(hDCSrc);
if (NULL == DCSrc)
{
DC_UnlockDc(DCDest);
DPRINT1("Invalid source dc handle (0x%08x) passed to NtGdiBitBlt\n", hDCSrc);
SetLastWin32Error(ERROR_INVALID_HANDLE);
return FALSE;
}
if (DCSrc->IsIC)
{
DC_UnlockDc(DCSrc);
DC_UnlockDc(DCDest);
/* Yes, Windows really returns TRUE in this case */
return TRUE;
}
}
else
{
DCSrc = DCDest;
}
}
else
{
DCSrc = NULL;
}
/* Offset the destination and source by the origin of their DCs. */
XDest += DCDest->w.DCOrgX;
YDest += DCDest->w.DCOrgY;
if (UsesSource)
{
XSrc += DCSrc->w.DCOrgX;
YSrc += DCSrc->w.DCOrgY;
}
DestRect.left = XDest;
DestRect.top = YDest;
DestRect.right = XDest+Width;
DestRect.bottom = YDest+Height;
SourcePoint.x = XSrc;
SourcePoint.y = YSrc;
BrushOrigin.x = 0;
BrushOrigin.y = 0;
/* Determine surfaces to be used in the bitblt */
BitmapDest = BITMAPOBJ_LockBitmap(DCDest->w.hBitmap);
if (UsesSource)
{
if (DCSrc->w.hBitmap == DCDest->w.hBitmap)
BitmapSrc = BitmapDest;
else
BitmapSrc = BITMAPOBJ_LockBitmap(DCSrc->w.hBitmap);
}
else
{
BitmapSrc = NULL;
}
if (UsesPattern)
{
BrushObj = BRUSHOBJ_LockBrush(DCDest->w.hBrush);
if (NULL == BrushObj)
{
if (UsesSource && hDCSrc != hDCDest)
{
DC_UnlockDc(DCSrc);
}
if(BitmapDest != NULL)
{
BITMAPOBJ_UnlockBitmap(BitmapDest);
}
if(BitmapSrc != NULL && BitmapSrc != BitmapDest)
{
BITMAPOBJ_UnlockBitmap(BitmapSrc);
}
DC_UnlockDc(DCDest);
SetLastWin32Error(ERROR_INVALID_HANDLE);
return FALSE;
}
BrushOrigin = BrushObj->ptOrigin;
IntGdiInitBrushInstance(&BrushInst, BrushObj, DCDest->XlateBrush);
}
else
{
BrushObj = NULL;
}
/* Create the XLATEOBJ. */
if (UsesSource)
{
if (DCDest->w.hPalette != 0)
DestPalette = DCDest->w.hPalette;
if (DCSrc->w.hPalette != 0)
SourcePalette = DCSrc->w.hPalette;
/* KB41464 details how to convert between mono and color */
if (DCDest->w.bitsPerPixel == 1 && DCSrc->w.bitsPerPixel == 1)
{
XlateObj = NULL;
}
else
{
if (DCDest->w.bitsPerPixel == 1)
{
XlateObj = IntEngCreateMonoXlate(0, DestPalette, SourcePalette, DCSrc->w.backgroundColor);
}
else if (DCSrc->w.bitsPerPixel == 1)
{
XlateObj = IntEngCreateSrcMonoXlate(DestPalette, DCSrc->w.backgroundColor, DCSrc->w.textColor);
}
else
{
XlateObj = IntEngCreateXlate(0, 0, DestPalette, SourcePalette);
}
if (NULL == XlateObj)
{
if (UsesSource && hDCSrc != hDCDest)
{
DC_UnlockDc(DCSrc);
}
DC_UnlockDc(DCDest);
if(BitmapDest != NULL)
{
BITMAPOBJ_UnlockBitmap(BitmapDest);
}
if(BitmapSrc != NULL && BitmapSrc != BitmapDest)
{
BITMAPOBJ_UnlockBitmap(BitmapSrc);
}
if(BrushObj != NULL)
{
BRUSHOBJ_UnlockBrush(BrushObj);
}
SetLastWin32Error(ERROR_NO_SYSTEM_RESOURCES);
return FALSE;
}
}
}
/* Perform the bitblt operation */
Status = IntEngBitBlt(&BitmapDest->SurfObj, &BitmapSrc->SurfObj, NULL,
DCDest->CombinedClip, XlateObj, &DestRect,
&SourcePoint, NULL,
BrushObj ? &BrushInst.BrushObject : NULL,
&BrushOrigin, ROP3_TO_ROP4(ROP));
if (UsesSource && XlateObj != NULL)
EngDeleteXlate(XlateObj);
if(BitmapDest != NULL)
{
BITMAPOBJ_UnlockBitmap(BitmapDest);
}
if (UsesSource && BitmapSrc != BitmapDest)
{
BITMAPOBJ_UnlockBitmap(BitmapSrc);
}
if (BrushObj != NULL)
{
BRUSHOBJ_UnlockBrush(BrushObj);
}
if (UsesSource && hDCSrc != hDCDest)
{
DC_UnlockDc(DCSrc);
}
DC_UnlockDc(DCDest);
return Status;
}
BOOL STDCALL
NtGdiTransparentBlt(
HDC hdcDst,
INT xDst,
INT yDst,
INT cxDst,
INT cyDst,
HDC hdcSrc,
INT xSrc,
INT ySrc,
INT cxSrc,
INT cySrc,
COLORREF TransColor)
{
PDC DCDest, DCSrc;
RECTL rcDest, rcSrc;
BITMAPOBJ *BitmapDest, *BitmapSrc;
XLATEOBJ *XlateObj;
HPALETTE SourcePalette = 0, DestPalette = 0;
PPALGDI PalDestGDI, PalSourceGDI;
USHORT PalDestMode, PalSrcMode;
ULONG TransparentColor = 0;
BOOL Ret = FALSE;
if(!(DCDest = DC_LockDc(hdcDst)))
{
DPRINT1("Invalid destination dc handle (0x%08x) passed to NtGdiTransparentBlt\n", hdcDst);
SetLastWin32Error(ERROR_INVALID_HANDLE);
return FALSE;
}
if (DCDest->IsIC)
{
DC_UnlockDc(DCDest);
/* Yes, Windows really returns TRUE in this case */
return TRUE;
}
if((hdcDst != hdcSrc) && !(DCSrc = DC_LockDc(hdcSrc)))
{
DC_UnlockDc(DCDest);
DPRINT1("Invalid source dc handle (0x%08x) passed to NtGdiTransparentBlt\n", hdcSrc);
SetLastWin32Error(ERROR_INVALID_HANDLE);
return FALSE;
}
if(hdcDst == hdcSrc)
{
DCSrc = DCDest;
}
if (DCSrc->IsIC)
{
DC_UnlockDc(DCSrc);
if(hdcDst != hdcSrc)
{
DC_UnlockDc(DCDest);
}
/* Yes, Windows really returns TRUE in this case */
return TRUE;
}
/* Offset positions */
xDst += DCDest->w.DCOrgX;
yDst += DCDest->w.DCOrgY;
xSrc += DCSrc->w.DCOrgX;
ySrc += DCSrc->w.DCOrgY;
if(DCDest->w.hPalette)
DestPalette = DCDest->w.hPalette;
if(DCSrc->w.hPalette)
SourcePalette = DCSrc->w.hPalette;
if(!(PalSourceGDI = PALETTE_LockPalette(SourcePalette)))
{
DC_UnlockDc(DCSrc);
DC_UnlockDc(DCDest);
SetLastWin32Error(ERROR_INVALID_HANDLE);
return FALSE;
}
if((DestPalette != SourcePalette) && !(PalDestGDI = PALETTE_LockPalette(DestPalette)))
{
PALETTE_UnlockPalette(PalSourceGDI);
DC_UnlockDc(DCSrc);
DC_UnlockDc(DCDest);
SetLastWin32Error(ERROR_INVALID_HANDLE);
return FALSE;
}
if(DestPalette != SourcePalette)
{
PalDestMode = PalDestGDI->Mode;
PalSrcMode = PalSourceGDI->Mode;
PALETTE_UnlockPalette(PalDestGDI);
}
else
{
PalDestMode = PalSrcMode = PalSourceGDI->Mode;
}
PALETTE_UnlockPalette(PalSourceGDI);
/* Translate Transparent (RGB) Color to the source palette */
if((XlateObj = (XLATEOBJ*)IntEngCreateXlate(PalSrcMode, PAL_RGB, SourcePalette, NULL)))
{
TransparentColor = XLATEOBJ_iXlate(XlateObj, (ULONG)TransColor);
EngDeleteXlate(XlateObj);
}
/* Create the XLATE object to convert colors between source and destination */
XlateObj = (XLATEOBJ*)IntEngCreateXlate(PalDestMode, PalSrcMode, DestPalette, SourcePalette);
BitmapDest = BITMAPOBJ_LockBitmap(DCDest->w.hBitmap);
/* FIXME - BitmapDest can be NULL!!!! Don't assert here! */
ASSERT(BitmapDest);
BitmapSrc = BITMAPOBJ_LockBitmap(DCSrc->w.hBitmap);
/* FIXME - BitmapSrc can be NULL!!!! Don't assert here! */
ASSERT(BitmapSrc);
rcDest.left = xDst;
rcDest.top = yDst;
rcDest.right = rcDest.left + cxDst;
rcDest.bottom = rcDest.top + cyDst;
rcSrc.left = xSrc;
rcSrc.top = ySrc;
rcSrc.right = rcSrc.left + cxSrc;
rcSrc.bottom = rcSrc.top + cySrc;
if((cxDst != cxSrc) || (cyDst != cySrc))
{
DPRINT1("TransparentBlt() does not support stretching at the moment!\n");
goto done;
}
Ret = IntEngTransparentBlt(&BitmapDest->SurfObj, &BitmapSrc->SurfObj,
DCDest->CombinedClip, XlateObj, &rcDest, &rcSrc,
TransparentColor, 0);
done:
BITMAPOBJ_UnlockBitmap(BitmapDest);
BITMAPOBJ_UnlockBitmap(BitmapSrc);
DC_UnlockDc(DCSrc);
if(hdcDst != hdcSrc)
{
DC_UnlockDc(DCDest);
}
if(XlateObj)
{
EngDeleteXlate(XlateObj);
}
return Ret;
}
HBITMAP STDCALL
NtGdiCreateBitmap(
INT Width,
INT Height,
UINT Planes,
UINT BitsPerPel,
CONST VOID *Bits)
{
PBITMAPOBJ bmp;
HBITMAP hBitmap;
SIZEL Size;
/* NOTE: Windows also doesn't store nr. of planes separately! */
BitsPerPel = (BYTE)BitsPerPel * (BYTE)Planes;
/* Check parameters */
if (!Height || !Width)
{
Size.cx = Size.cy = 1;
}
else
{
Size.cx = abs(Width);
Size.cy = abs(Height);
}
/* Create the bitmap object. */
hBitmap = IntCreateBitmap(Size, BITMAPOBJ_GetWidthBytes(Width, BitsPerPel),
BitmapFormat(BitsPerPel, BI_RGB),
(Height < 0 ? BMF_TOPDOWN : 0) |
(Bits == NULL ? 0 : BMF_NOZEROINIT), NULL);
if (!hBitmap)
{
DPRINT("NtGdiCreateBitmap: IntCreateBitmap returned 0\n");
return 0;
}
DPRINT("NtGdiCreateBitmap:%dx%d, %d BPP colors returning %08x\n",
Size.cx, Size.cy, BitsPerPel, hBitmap);
bmp = BITMAPOBJ_LockBitmap( hBitmap );
/* FIXME - bmp can be NULL!!!!!! */
bmp->flFlags = BITMAPOBJ_IS_APIBITMAP;
BITMAPOBJ_UnlockBitmap( bmp );
/*
* NOTE: It's ugly practice, but we are using the object even
* after unlocking. Since the handle is currently known only
* to us it should be safe.
*/
if (Bits != NULL)
{
NtGdiSetBitmapBits(hBitmap, bmp->SurfObj.cjBits, Bits);
}
return hBitmap;
}
BOOL INTERNAL_CALL
BITMAP_Cleanup(PVOID ObjectBody)
{
PBITMAPOBJ pBmp = (PBITMAPOBJ)ObjectBody;
if (pBmp->SurfObj.pvBits != NULL &&
(pBmp->flFlags & BITMAPOBJ_IS_APIBITMAP))
{
if (pBmp->dib == NULL)
{
ExFreePool(pBmp->SurfObj.pvBits);
}
else
{
EngFreeUserMem(pBmp->SurfObj.pvBits);
}
if (pBmp->hDIBPalette)
{
NtGdiDeleteObject(pBmp->hDIBPalette);
}
}
if (NULL != pBmp->BitsLock)
{
ExFreePoolWithTag(pBmp->BitsLock, TAG_BITMAPOBJ);
pBmp->BitsLock = NULL;
}
return TRUE;
}
HBITMAP FASTCALL
IntCreateCompatibleBitmap(
PDC Dc,
INT Width,
INT Height)
{
HBITMAP Bmp;
Bmp = NULL;
if ((Width >= 0x10000) || (Height >= 0x10000))
{
DPRINT1("got bad width %d or height %d, please look for reason\n", Width, Height);
return NULL;
}
/* MS doc says if width or height is 0, return 1-by-1 pixel, monochrome bitmap */
if (0 == Width || 0 == Height)
{
Bmp = NtGdiCreateBitmap (1, 1, 1, 1, NULL);
}
else
{
Bmp = NtGdiCreateBitmap(Width, Height, 1, Dc->w.bitsPerPixel, NULL);
}
return Bmp;
}
HBITMAP STDCALL
NtGdiCreateCompatibleBitmap(
HDC hDC,
INT Width,
INT Height)
{
HBITMAP Bmp;
PDC Dc;
Dc = DC_LockDc(hDC);
DPRINT("NtGdiCreateCompatibleBitmap(%04x,%d,%d, bpp:%d) = \n", hDC, Width, Height, Dc->w.bitsPerPixel);
if (NULL == Dc)
{
SetLastWin32Error(ERROR_INVALID_HANDLE);
return NULL;
}
Bmp = IntCreateCompatibleBitmap(Dc, Width, Height);
DPRINT ("\t\t%04x\n", Bmp);
DC_UnlockDc(Dc);
return Bmp;
}
HBITMAP STDCALL
NtGdiCreateBitmapIndirect(CONST BITMAP *BM)
{
return NtGdiCreateBitmap (BM->bmWidth,
BM->bmHeight,
BM->bmPlanes,
BM->bmBitsPixel,
BM->bmBits);
}
HBITMAP STDCALL
NtGdiCreateDiscardableBitmap(
HDC hDC,
INT Width,
INT Height)
{
/* FIXME: this probably should do something else */
return NtGdiCreateCompatibleBitmap(hDC, Width, Height);
}
BOOL STDCALL
NtGdiExtFloodFill(
HDC hDC,
INT XStart,
INT YStart,
COLORREF Color,
UINT FillType)
{
DPRINT1("FIXME: NtGdiExtFloodFill is UNIMPLEMENTED\n");
/* lie and say we succeded */
return TRUE;
}
BOOL STDCALL
NtGdiFloodFill(
HDC hDC,
INT XStart,
INT YStart,
COLORREF Fill)
{
return NtGdiExtFloodFill(hDC, XStart, YStart, Fill, FLOODFILLBORDER );
}
BOOL STDCALL
NtGdiGetBitmapDimensionEx(
HBITMAP hBitmap,
LPSIZE Dimension)
{
PBITMAPOBJ bmp;
bmp = BITMAPOBJ_LockBitmap(hBitmap);
if (bmp == NULL)
{
return FALSE;
}
*Dimension = bmp->dimension;
BITMAPOBJ_UnlockBitmap(bmp);
return TRUE;
}
COLORREF STDCALL
NtGdiGetPixel(HDC hDC, INT XPos, INT YPos)
{
PDC dc = NULL;
COLORREF Result = (COLORREF)CLR_INVALID; // default to failure
BOOL bInRect = FALSE;
BITMAPOBJ *BitmapObject;
SURFOBJ *SurfaceObject;
HPALETTE Pal = 0;
XLATEOBJ *XlateObj;
dc = DC_LockDc (hDC);
if ( !dc )
{
SetLastWin32Error(ERROR_INVALID_HANDLE);
return Result;
}
if (dc->IsIC)
{
DC_UnlockDc(dc);
return Result;
}
XPos += dc->w.DCOrgX;
YPos += dc->w.DCOrgY;
if ( IN_RECT(dc->CombinedClip->rclBounds,XPos,YPos) )
{
bInRect = TRUE;
BitmapObject = BITMAPOBJ_LockBitmap(dc->w.hBitmap);
SurfaceObject = &BitmapObject->SurfObj;
if ( BitmapObject )
{
if ( dc->w.hPalette != 0 )
Pal = dc->w.hPalette;
/* FIXME: Verify if it shouldn't be PAL_BGR! */
XlateObj = (XLATEOBJ*)IntEngCreateXlate ( PAL_RGB, 0, NULL, Pal );
if ( XlateObj )
{
// check if this DC has a DIB behind it...
if ( SurfaceObject->pvScan0 ) // STYPE_BITMAP == SurfaceObject->iType
{
ASSERT ( SurfaceObject->lDelta );
Result = XLATEOBJ_iXlate(XlateObj,
DibFunctionsForBitmapFormat[SurfaceObject->iBitmapFormat].DIB_GetPixel ( SurfaceObject, XPos, YPos ) );
}
EngDeleteXlate(XlateObj);
}
BITMAPOBJ_UnlockBitmap(BitmapObject);
}
}
DC_UnlockDc(dc);
// if Result is still CLR_INVALID, then the "quick" method above didn't work
if ( bInRect && Result == CLR_INVALID )
{
// FIXME: create a 1x1 32BPP DIB, and blit to it
HDC hDCTmp = NtGdiCreateCompatibleDC(hDC);
if ( hDCTmp )
{
static const BITMAPINFOHEADER bih = { sizeof(BITMAPINFOHEADER), 1, 1, 1, 32, BI_RGB, 0, 0, 0, 0, 0 };
BITMAPINFO bi;
RtlMoveMemory ( &(bi.bmiHeader), &bih, sizeof(bih) );
HBITMAP hBmpTmp = NtGdiCreateDIBitmap ( hDC, &bi.bmiHeader, 0, NULL, &bi, DIB_RGB_COLORS );
//HBITMAP hBmpTmp = NtGdiCreateBitmap ( 1, 1, 1, 32, NULL);
if ( hBmpTmp )
{
HBITMAP hBmpOld = (HBITMAP)NtGdiSelectObject ( hDCTmp, hBmpTmp );
if ( hBmpOld )
{
PBITMAPOBJ bmpobj;
NtGdiBitBlt ( hDCTmp, 0, 0, 1, 1, hDC, XPos, YPos, SRCCOPY );
NtGdiSelectObject ( hDCTmp, hBmpOld );
// our bitmap is no longer selected, so we can access it's stuff...
bmpobj = BITMAPOBJ_LockBitmap ( hBmpTmp );
if ( bmpobj )
{
Result = *(COLORREF*)bmpobj->SurfObj.pvScan0;
BITMAPOBJ_UnlockBitmap ( bmpobj );
}
}
NtGdiDeleteObject ( hBmpTmp );
}
NtGdiDeleteDC ( hDCTmp );
}
}
return Result;
}
/***********************************************************************
* MaskBlt
* Ported from WINE by sedwards 11-4-03
*
* Someone thought it would be faster to do it here and then switch back
* to GDI32. I dunno. Write a test and let me know.
*/
static inline BYTE
SwapROP3_SrcDst(BYTE bRop3)
{
return (bRop3 & 0x99) | ((bRop3 & 0x22) << 1) | ((bRop3 & 0x44) >> 1);
}
#define FRGND_ROP3(ROP4) ((ROP4) & 0x00FFFFFF)
#define BKGND_ROP3(ROP4) (ROP3Table[(SwapROP3_SrcDst((ROP4)>>24)) & 0xFF])
#define DSTCOPY 0x00AA0029
#define DSTERASE 0x00220326 /* dest = dest & (~src) : DSna */
BOOL STDCALL
NtGdiMaskBlt (
HDC hdcDest, INT nXDest, INT nYDest,
INT nWidth, INT nHeight, HDC hdcSrc,
INT nXSrc, INT nYSrc, HBITMAP hbmMask,
INT xMask, INT yMask, DWORD dwRop)
{
HBITMAP hOldMaskBitmap, hBitmap2, hOldBitmap2, hBitmap3, hOldBitmap3;
HDC hDCMask, hDC1, hDC2;
static const DWORD ROP3Table[256] =
{
0x00000042, 0x00010289,
0x00020C89, 0x000300AA,
0x00040C88, 0x000500A9,
0x00060865, 0x000702C5,
0x00080F08, 0x00090245,
0x000A0329, 0x000B0B2A,
0x000C0324, 0x000D0B25,
0x000E08A5, 0x000F0001,
0x00100C85, 0x001100A6,
0x00120868, 0x001302C8,
0x00140869, 0x001502C9,
0x00165CCA, 0x00171D54,
0x00180D59, 0x00191CC8,
0x001A06C5, 0x001B0768,
0x001C06CA, 0x001D0766,
0x001E01A5, 0x001F0385,
0x00200F09, 0x00210248,
0x00220326, 0x00230B24,
0x00240D55, 0x00251CC5,
0x002606C8, 0x00271868,
0x00280369, 0x002916CA,
0x002A0CC9, 0x002B1D58,
0x002C0784, 0x002D060A,
0x002E064A, 0x002F0E2A,
0x0030032A, 0x00310B28,
0x00320688, 0x00330008,
0x003406C4, 0x00351864,
0x003601A8, 0x00370388,
0x0038078A, 0x00390604,
0x003A0644, 0x003B0E24,
0x003C004A, 0x003D18A4,
0x003E1B24, 0x003F00EA,
0x00400F0A, 0x00410249,
0x00420D5D, 0x00431CC4,
0x00440328, 0x00450B29,
0x004606C6, 0x0047076A,
0x00480368, 0x004916C5,
0x004A0789, 0x004B0605,
0x004C0CC8, 0x004D1954,
0x004E0645, 0x004F0E25,
0x00500325, 0x00510B26,
0x005206C9, 0x00530764,
0x005408A9, 0x00550009,
0x005601A9, 0x00570389,
0x00580785, 0x00590609,
0x005A0049, 0x005B18A9,
0x005C0649, 0x005D0E29,
0x005E1B29, 0x005F00E9,
0x00600365, 0x006116C6,
0x00620786, 0x00630608,
0x00640788, 0x00650606,
0x00660046, 0x006718A8,
0x006858A6, 0x00690145,
0x006A01E9, 0x006B178A,
0x006C01E8, 0x006D1785,
0x006E1E28, 0x006F0C65,
0x00700CC5, 0x00711D5C,
0x00720648, 0x00730E28,
0x00740646, 0x00750E26,
0x00761B28, 0x007700E6,
0x007801E5, 0x00791786,
0x007A1E29, 0x007B0C68,
0x007C1E24, 0x007D0C69,
0x007E0955, 0x007F03C9,
0x008003E9, 0x00810975,
0x00820C49, 0x00831E04,
0x00840C48, 0x00851E05,
0x008617A6, 0x008701C5,
0x008800C6, 0x00891B08,
0x008A0E06, 0x008B0666,
0x008C0E08, 0x008D0668,
0x008E1D7C, 0x008F0CE5,
0x00900C45, 0x00911E08,
0x009217A9, 0x009301C4,
0x009417AA, 0x009501C9,
0x00960169, 0x0097588A,
0x00981888, 0x00990066,
0x009A0709, 0x009B07A8,
0x009C0704, 0x009D07A6,
0x009E16E6, 0x009F0345,
0x00A000C9, 0x00A11B05,
0x00A20E09, 0x00A30669,
0x00A41885, 0x00A50065,
0x00A60706, 0x00A707A5,
0x00A803A9, 0x00A90189,
0x00AA0029, 0x00AB0889,
0x00AC0744, 0x00AD06E9,
0x00AE0B06, 0x00AF0229,
0x00B00E05, 0x00B10665,
0x00B21974, 0x00B30CE8,
0x00B4070A, 0x00B507A9,
0x00B616E9, 0x00B70348,
0x00B8074A, 0x00B906E6,
0x00BA0B09, 0x00BB0226,
0x00BC1CE4, 0x00BD0D7D,
0x00BE0269, 0x00BF08C9,
0x00C000CA, 0x00C11B04,
0x00C21884, 0x00C3006A,
0x00C40E04, 0x00C50664,
0x00C60708, 0x00C707AA,
0x00C803A8, 0x00C90184,
0x00CA0749, 0x00CB06E4,
0x00CC0020, 0x00CD0888,
0x00CE0B08, 0x00CF0224,
0x00D00E0A, 0x00D1066A,
0x00D20705, 0x00D307A4,
0x00D41D78, 0x00D50CE9,
0x00D616EA, 0x00D70349,
0x00D80745, 0x00D906E8,
0x00DA1CE9, 0x00DB0D75,
0x00DC0B04, 0x00DD0228,
0x00DE0268, 0x00DF08C8,
0x00E003A5, 0x00E10185,
0x00E20746, 0x00E306EA,
0x00E40748, 0x00E506E5,
0x00E61CE8, 0x00E70D79,
0x00E81D74, 0x00E95CE6,
0x00EA02E9, 0x00EB0849,
0x00EC02E8, 0x00ED0848,
0x00EE0086, 0x00EF0A08,
0x00F00021, 0x00F10885,
0x00F20B05, 0x00F3022A,
0x00F40B0A, 0x00F50225,
0x00F60265, 0x00F708C5,
0x00F802E5, 0x00F90845,
0x00FA0089, 0x00FB0A09,
0x00FC008A, 0x00FD0A0A,
0x00FE02A9, 0x00FF0062,
};
if (!hbmMask)
return NtGdiBitBlt(hdcDest, nXDest, nYDest, nWidth, nHeight, hdcSrc, nXSrc, nYSrc, FRGND_ROP3(dwRop));
/* 1. make mask bitmap's dc */
hDCMask = NtGdiCreateCompatibleDC(hdcDest);
hOldMaskBitmap = (HBITMAP)NtGdiSelectObject(hDCMask, hbmMask);
/* 2. make masked Background bitmap */
/* 2.1 make bitmap */
hDC1 = NtGdiCreateCompatibleDC(hdcDest);
hBitmap2 = NtGdiCreateCompatibleBitmap(hdcDest, nWidth, nHeight);
hOldBitmap2 = (HBITMAP)NtGdiSelectObject(hDC1, hBitmap2);
/* 2.2 draw dest bitmap and mask */
NtGdiBitBlt(hDC1, 0, 0, nWidth, nHeight, hdcSrc, nXSrc, nYSrc, SRCCOPY);
NtGdiBitBlt(hDC1, 0, 0, nWidth, nHeight, hdcDest, nXDest, nYDest, BKGND_ROP3(dwRop));
NtGdiBitBlt(hDC1, 0, 0, nWidth, nHeight, hDCMask, xMask, yMask, DSTERASE);
/* 3. make masked Foreground bitmap */
/* 3.1 make bitmap */
hDC2 = NtGdiCreateCompatibleDC(hdcDest);
hBitmap3 = NtGdiCreateCompatibleBitmap(hdcDest, nWidth, nHeight);
hOldBitmap3 = (HBITMAP)NtGdiSelectObject(hDC2, hBitmap3);
/* 3.2 draw src bitmap and mask */
NtGdiBitBlt(hDC2, 0, 0, nWidth, nHeight, hdcDest, nXDest, nYDest, SRCCOPY);
NtGdiBitBlt(hDC2, 0, 0, nWidth, nHeight, hdcSrc, nXSrc, nYSrc, FRGND_ROP3(dwRop));
NtGdiBitBlt(hDC2, 0, 0, nWidth, nHeight, hDCMask, xMask, yMask, SRCAND);
/* 4. combine two bitmap and copy it to hdcDest */
NtGdiBitBlt(hDC1, 0, 0, nWidth, nHeight, hDC2, 0, 0, SRCPAINT);
NtGdiBitBlt(hdcDest, nXDest, nYDest, nWidth, nHeight, hDC1, 0, 0, SRCCOPY);
/* 5. restore all object */
NtGdiSelectObject(hDCMask, hOldMaskBitmap);
NtGdiSelectObject(hDC1, hOldBitmap2);
NtGdiSelectObject(hDC2, hOldBitmap3);
/* 6. delete all temp object */
NtGdiDeleteObject(hBitmap2);
NtGdiDeleteObject(hBitmap3);
NtGdiDeleteDC(hDC1);
NtGdiDeleteDC(hDC2);
NtGdiDeleteDC(hDCMask);
return TRUE;
}
BOOL STDCALL
NtGdiPlgBlt(
HDC hDCDest,
CONST POINT *Point,
HDC hDCSrc,
INT XSrc,
INT YSrc,
INT Width,
INT Height,
HBITMAP hMaskBitmap,
INT xMask,
INT yMask)
{
UNIMPLEMENTED;
return FALSE;
}
LONG STDCALL
NtGdiSetBitmapBits(
HBITMAP hBitmap,
DWORD Bytes,
CONST VOID *Bits)
{
LONG height, ret;
PBITMAPOBJ bmp;
bmp = BITMAPOBJ_LockBitmap(hBitmap);
if (bmp == NULL || Bits == NULL)
{
return 0;
}
if (Bytes < 0)
{
DPRINT ("(%ld): Negative number of bytes passed???\n", Bytes );
Bytes = -Bytes;
}
/* Only get entire lines */
height = Bytes / abs(bmp->SurfObj.lDelta);
if (height > bmp->SurfObj.sizlBitmap.cy)
{
height = bmp->SurfObj.sizlBitmap.cy;
}
Bytes = height * abs(bmp->SurfObj.lDelta);
DPRINT ("(%08x, bytes:%ld, bits:%p) %dx%d %d colors fetched height: %ld\n",
hBitmap,
Bytes,
Bits,
bmp->SurfObj.sizlBitmap.cx,
bmp->SurfObj.sizlBitmap.cy,
1 << BitsPerFormat(bmp->SurfObj.iBitmapFormat),
height);
#if 0
/* FIXME: call DDI specific function here if available */
if(bmp->DDBitmap)
{
DPRINT ("Calling device specific BitmapBits\n");
if (bmp->DDBitmap->funcs->pBitmapBits)
{
ret = bmp->DDBitmap->funcs->pBitmapBits(hBitmap, (void *) Bits, Bytes, DDB_SET);
}
else
{
DPRINT ("BitmapBits == NULL??\n");
ret = 0;
}
}
else
#endif
{
memcpy(bmp->SurfObj.pvBits, Bits, Bytes);
ret = Bytes;
}
BITMAPOBJ_UnlockBitmap(bmp);
return ret;
}
BOOL STDCALL
NtGdiSetBitmapDimensionEx(
HBITMAP hBitmap,
INT Width,
INT Height,
LPSIZE Size)
{
PBITMAPOBJ bmp;
bmp = BITMAPOBJ_LockBitmap(hBitmap);
if (bmp == NULL)
{
return FALSE;
}
if (Size)
{
*Size = bmp->dimension;
}
bmp->dimension.cx = Width;
bmp->dimension.cy = Height;
BITMAPOBJ_UnlockBitmap (bmp);
return TRUE;
}
COLORREF STDCALL
NtGdiSetPixel(
HDC hDC,
INT X,
INT Y,
COLORREF Color)
{
if (NtGdiSetPixelV(hDC,X,Y,Color))
{
return NtGdiGetPixel(hDC,X,Y);
}
return ((COLORREF) -1);
}
BOOL STDCALL
NtGdiSetPixelV(
HDC hDC,
INT X,
INT Y,
COLORREF Color)
{
HBRUSH NewBrush = NtGdiCreateSolidBrush(Color);
HGDIOBJ OldBrush;
if (NewBrush == NULL)
return(FALSE);
OldBrush = NtGdiSelectObject(hDC, NewBrush);
if (OldBrush == NULL)
{
NtGdiDeleteObject(NewBrush);
return(FALSE);
}
NtGdiPatBlt(hDC, X, Y, 1, 1, PATCOPY);
NtGdiSelectObject(hDC, OldBrush);
NtGdiDeleteObject(NewBrush);
return TRUE;
}
BOOL STDCALL
NtGdiStretchBlt(
HDC hDCDest,
INT XOriginDest,
INT YOriginDest,
INT WidthDest,
INT HeightDest,
HDC hDCSrc,
INT XOriginSrc,
INT YOriginSrc,
INT WidthSrc,
INT HeightSrc,
DWORD ROP)
{
PDC DCDest = NULL;
PDC DCSrc = NULL;
BITMAPOBJ *BitmapDest, *BitmapSrc;
RECTL DestRect;
RECTL SourceRect;
BOOL Status;
XLATEOBJ *XlateObj = NULL;
HPALETTE SourcePalette = 0, DestPalette = 0;
PGDIBRUSHOBJ BrushObj;
BOOL UsesSource = ((ROP & 0xCC0000) >> 2) != (ROP & 0x330000);
BOOL UsesPattern = ((ROP & 0xF00000) >> 4) != (ROP & 0x0F0000);
if (0 == WidthDest || 0 == HeightDest || 0 == WidthSrc || 0 == HeightSrc)
{
SetLastWin32Error(ERROR_INVALID_PARAMETER);
return FALSE;
}
DCDest = DC_LockDc(hDCDest);
if (NULL == DCDest)
{
DPRINT1("Invalid destination dc handle (0x%08x) passed to NtGdiStretchBlt\n", hDCDest);
SetLastWin32Error(ERROR_INVALID_HANDLE);
return FALSE;
}
if (DCDest->IsIC)
{
DC_UnlockDc(DCDest);
/* Yes, Windows really returns TRUE in this case */
return TRUE;
}
if (UsesSource)
{
if (hDCSrc != hDCDest)
{
DCSrc = DC_LockDc(hDCSrc);
if (NULL == DCSrc)
{
DC_UnlockDc(DCDest);
DPRINT1("Invalid source dc handle (0x%08x) passed to NtGdiStretchBlt\n", hDCSrc);
SetLastWin32Error(ERROR_INVALID_HANDLE);
return FALSE;
}
if (DCSrc->IsIC)
{
DC_UnlockDc(DCSrc);
DC_UnlockDc(DCDest);
/* Yes, Windows really returns TRUE in this case */
return TRUE;
}
}
else
{
DCSrc = DCDest;
}
}
else
{
DCSrc = NULL;
}
/* Offset the destination and source by the origin of their DCs. */
XOriginDest += DCDest->w.DCOrgX;
YOriginDest += DCDest->w.DCOrgY;
if (UsesSource)
{
XOriginSrc += DCSrc->w.DCOrgX;
YOriginSrc += DCSrc->w.DCOrgY;
}
DestRect.left = XOriginDest;
DestRect.top = YOriginDest;
DestRect.right = XOriginDest+WidthDest;
DestRect.bottom = YOriginDest+HeightDest;
SourceRect.left = XOriginSrc;
SourceRect.top = YOriginSrc;
SourceRect.right = XOriginSrc+WidthSrc;
SourceRect.bottom = YOriginSrc+HeightSrc;
/* Determine surfaces to be used in the bitblt */
BitmapDest = BITMAPOBJ_LockBitmap(DCDest->w.hBitmap);
if (UsesSource)
{
if (DCSrc->w.hBitmap == DCDest->w.hBitmap)
BitmapSrc = BitmapDest;
else
BitmapSrc = BITMAPOBJ_LockBitmap(DCSrc->w.hBitmap);
}
else
{
BitmapSrc = NULL;
}
if ( UsesSource )
{
int sw = BitmapSrc->SurfObj.sizlBitmap.cx;
int sh = BitmapSrc->SurfObj.sizlBitmap.cy;
if ( SourceRect.left < 0 )
{
DestRect.left = DestRect.right - (DestRect.right-DestRect.left) * (SourceRect.right)/abs(SourceRect.right-SourceRect.left);
SourceRect.left = 0;
}
if ( SourceRect.top < 0 )
{
DestRect.top = DestRect.bottom - (DestRect.bottom-DestRect.top) * (SourceRect.bottom)/abs(SourceRect.bottom-SourceRect.top);
SourceRect.top = 0;
}
if ( SourceRect.right < -1 )
{
DestRect.right = DestRect.left + (DestRect.right-DestRect.left) * (-1-SourceRect.left)/abs(SourceRect.right-SourceRect.left);
SourceRect.right = -1;
}
if ( SourceRect.bottom < -1 )
{
DestRect.bottom = DestRect.top + (DestRect.bottom-DestRect.top) * (-1-SourceRect.top)/abs(SourceRect.bottom-SourceRect.top);
SourceRect.bottom = -1;
}
if ( SourceRect.right > sw )
{
DestRect.right = DestRect.left + (DestRect.right-DestRect.left) * abs(sw-SourceRect.left) / abs(SourceRect.right-SourceRect.left);
SourceRect.right = sw;
}
if ( SourceRect.bottom > sh )
{
DestRect.bottom = DestRect.top + (DestRect.bottom-DestRect.top) * abs(sh-SourceRect.top) / abs(SourceRect.bottom-SourceRect.top);
SourceRect.bottom = sh;
}
sw--;
sh--;
if ( SourceRect.left > sw )
{
DestRect.left = DestRect.right - (DestRect.right-DestRect.left) * (SourceRect.right-sw) / abs(SourceRect.right-SourceRect.left);
SourceRect.left = 0;
}
if ( SourceRect.top > sh )
{
DestRect.top = DestRect.bottom - (DestRect.bottom-DestRect.top) * (SourceRect.bottom-sh) / abs(SourceRect.bottom-SourceRect.top);
SourceRect.top = 0;
}
if (0 == (DestRect.right-DestRect.left) || 0 == (DestRect.bottom-DestRect.top) || 0 == (SourceRect.right-SourceRect.left) || 0 == (SourceRect.bottom-SourceRect.top))
{
SetLastWin32Error(ERROR_INVALID_PARAMETER);
Status = FALSE;
goto failed;
}
}
if (UsesPattern)
{
BrushObj = BRUSHOBJ_LockBrush(DCDest->w.hBrush);
if (NULL == BrushObj)
{
if (UsesSource && hDCSrc != hDCDest)
{
DC_UnlockDc(DCSrc);
}
DC_UnlockDc(DCDest);
SetLastWin32Error(ERROR_INVALID_HANDLE);
return FALSE;
}
}
else
{
BrushObj = NULL;
}
/* Create the XLATEOBJ. */
if (UsesSource)
{
if (DCDest->w.hPalette != 0)
DestPalette = DCDest->w.hPalette;
if (DCSrc->w.hPalette != 0)
SourcePalette = DCSrc->w.hPalette;
/* FIXME: Use the same logic for create XLATEOBJ as in NtGdiBitBlt. */
XlateObj = (XLATEOBJ*)IntEngCreateXlate(0, 0, DestPalette, SourcePalette);
if (NULL == XlateObj)
{
if (UsesSource && hDCSrc != hDCDest)
{
DC_UnlockDc(DCSrc);
}
DC_UnlockDc(DCDest);
SetLastWin32Error(ERROR_NO_SYSTEM_RESOURCES);
return FALSE;
}
}
/* Perform the bitblt operation */
Status = IntEngStretchBlt(&BitmapDest->SurfObj, &BitmapSrc->SurfObj,
NULL, DCDest->CombinedClip, XlateObj,
&DestRect, &SourceRect, NULL, NULL, NULL,
COLORONCOLOR);
if (UsesSource)
EngDeleteXlate(XlateObj);
if (UsesPattern)
{
BRUSHOBJ_UnlockBrush(BrushObj);
}
failed:
if (UsesSource && DCSrc->w.hBitmap != DCDest->w.hBitmap)
{
BITMAPOBJ_UnlockBitmap(BitmapSrc);
}
BITMAPOBJ_UnlockBitmap(BitmapDest);
if (UsesSource && hDCSrc != hDCDest)
{
DC_UnlockDc(DCSrc);
}
DC_UnlockDc(DCDest);
return Status;
}
BOOL STDCALL
NtGdiAlphaBlend(
HDC hDCDest,
INT XOriginDest,
INT YOriginDest,
INT WidthDest,
INT HeightDest,
HDC hDCSrc,
INT XOriginSrc,
INT YOriginSrc,
INT WidthSrc,
INT HeightSrc,
BLENDFUNCTION BlendFunc)
{
PDC DCDest = NULL;
PDC DCSrc = NULL;
BITMAPOBJ *BitmapDest, *BitmapSrc;
RECTL DestRect, SourceRect;
BOOL Status;
XLATEOBJ *XlateObj;
BLENDOBJ BlendObj = {BlendFunc};
HPALETTE SourcePalette = 0, DestPalette = 0;
DCDest = DC_LockDc(hDCDest);
if (NULL == DCDest)
{
DPRINT1("Invalid destination dc handle (0x%08x) passed to NtGdiAlphaBlend\n", hDCDest);
SetLastWin32Error(ERROR_INVALID_HANDLE);
return FALSE;
}
if (DCDest->IsIC)
{
DC_UnlockDc(DCDest);
/* Yes, Windows really returns TRUE in this case */
return TRUE;
}
if (hDCSrc != hDCDest)
{
DCSrc = DC_LockDc(hDCSrc);
if (NULL == DCSrc)
{
DC_UnlockDc(DCDest);
DPRINT1("Invalid source dc handle (0x%08x) passed to NtGdiAlphaBlend\n", hDCSrc);
SetLastWin32Error(ERROR_INVALID_HANDLE);
return FALSE;
}
if (DCSrc->IsIC)
{
DC_UnlockDc(DCSrc);
DC_UnlockDc(DCDest);
/* Yes, Windows really returns TRUE in this case */
return TRUE;
}
}
else
{
DCSrc = DCDest;
}
/* Offset the destination and source by the origin of their DCs. */
XOriginDest += DCDest->w.DCOrgX;
YOriginDest += DCDest->w.DCOrgY;
XOriginSrc += DCSrc->w.DCOrgX;
YOriginSrc += DCSrc->w.DCOrgY;
DestRect.left = XOriginDest;
DestRect.top = YOriginDest;
DestRect.right = XOriginDest + WidthDest;
DestRect.bottom = YOriginDest + HeightDest;
SourceRect.left = XOriginSrc;
SourceRect.top = YOriginSrc;
SourceRect.right = XOriginSrc + WidthSrc;
SourceRect.bottom = YOriginSrc + HeightSrc;
/* Determine surfaces to be used in the bitblt */
BitmapDest = BITMAPOBJ_LockBitmap(DCDest->w.hBitmap);
if (DCSrc->w.hBitmap == DCDest->w.hBitmap)
BitmapSrc = BitmapDest;
else
BitmapSrc = BITMAPOBJ_LockBitmap(DCSrc->w.hBitmap);
/* Create the XLATEOBJ. */
if (DCDest->w.hPalette != 0)
DestPalette = DCDest->w.hPalette;
if (DCSrc->w.hPalette != 0)
SourcePalette = DCSrc->w.hPalette;
/* KB41464 details how to convert between mono and color */
if (DCDest->w.bitsPerPixel == 1 && DCSrc->w.bitsPerPixel == 1)
{
XlateObj = NULL;
}
else
{
if (DCDest->w.bitsPerPixel == 1)
{
XlateObj = IntEngCreateMonoXlate(0, DestPalette, SourcePalette, DCSrc->w.backgroundColor);
}
else if (DCSrc->w.bitsPerPixel == 1)
{
XlateObj = IntEngCreateSrcMonoXlate(DestPalette, DCSrc->w.backgroundColor, DCSrc->w.textColor);
}
else
{
XlateObj = IntEngCreateXlate(0, 0, DestPalette, SourcePalette);
}
if (NULL == XlateObj)
{
BITMAPOBJ_UnlockBitmap(BitmapDest);
if (BitmapSrc != BitmapDest)
BITMAPOBJ_UnlockBitmap(BitmapSrc);
DC_UnlockDc(DCDest);
if (hDCSrc != hDCDest)
DC_UnlockDc(DCSrc);
SetLastWin32Error(ERROR_NO_SYSTEM_RESOURCES);
return FALSE;
}
}
/* Perform the alpha blend operation */
Status = IntEngAlphaBlend(&BitmapDest->SurfObj, &BitmapSrc->SurfObj,
DCDest->CombinedClip, XlateObj,
&DestRect, &SourceRect, &BlendObj);
if (XlateObj != NULL)
EngDeleteXlate(XlateObj);
BITMAPOBJ_UnlockBitmap(BitmapDest);
if (BitmapSrc != BitmapDest)
BITMAPOBJ_UnlockBitmap(BitmapSrc);
DC_UnlockDc(DCDest);
if (hDCSrc != hDCDest)
DC_UnlockDc(DCSrc);
return Status;
}
/* Internal Functions */
INT FASTCALL
BITMAPOBJ_GetWidthBytes (INT bmWidth, INT bpp)
{
#if 0
switch(bpp)
{
case 1:
return 2 * ((bmWidth+15) >> 4);
case 24:
bmWidth *= 3; /* fall through */
case 8:
return bmWidth + (bmWidth & 1);
case 32:
return bmWidth * 4;
case 16:
case 15:
return bmWidth * 2;
case 4:
return 2 * ((bmWidth+3) >> 2);
default:
DPRINT ("stub");
}
return -1;
#endif
return ((bmWidth * bpp + 15) & ~15) >> 3;
}
HBITMAP FASTCALL
BITMAPOBJ_CopyBitmap(HBITMAP hBitmap)
{
HBITMAP res;
BITMAP bm;
BITMAPOBJ *Bitmap;
if (hBitmap == NULL)
return 0;
Bitmap = GDIOBJ_LockObj(hBitmap, GDI_OBJECT_TYPE_BITMAP);
if (Bitmap == NULL)
return 0;
BITMAP_GetObject(Bitmap, sizeof(BITMAP), &bm);
bm.bmBits = NULL;
if (Bitmap->SurfObj.lDelta >= 0)
bm.bmHeight = -bm.bmHeight;
res = NtGdiCreateBitmapIndirect(&bm);
if(res)
{
char *buf;
buf = ExAllocatePoolWithTag (PagedPool, bm.bmWidthBytes * abs(bm.bmHeight), TAG_BITMAP);
NtGdiGetBitmapBits (hBitmap, bm.bmWidthBytes * abs(bm.bmHeight), buf);
NtGdiSetBitmapBits (res, bm.bmWidthBytes * abs(bm.bmHeight), buf);
ExFreePool (buf);
}
GDIOBJ_UnlockObjByPtr(Bitmap);
return res;
}
INT STDCALL
BITMAP_GetObject(BITMAPOBJ * bmp, INT count, LPVOID buffer)
{
if(bmp->dib)
{
if(count < (INT) sizeof(DIBSECTION))
{
if (count > (INT) sizeof(BITMAP)) count = sizeof(BITMAP);
}
else
{
if (count > (INT) sizeof(DIBSECTION)) count = sizeof(DIBSECTION);
}
memcpy(buffer, bmp->dib, count);
return count;
}
else
{
BITMAP Bitmap;
if (count > (INT) sizeof(BITMAP)) count = sizeof(BITMAP);
Bitmap.bmType = 0;
Bitmap.bmWidth = bmp->SurfObj.sizlBitmap.cx;
Bitmap.bmHeight = bmp->SurfObj.sizlBitmap.cy;
Bitmap.bmWidthBytes = abs(bmp->SurfObj.lDelta);
Bitmap.bmPlanes = 1;
Bitmap.bmBitsPixel = BitsPerFormat(bmp->SurfObj.iBitmapFormat);
Bitmap.bmBits = bmp->SurfObj.pvBits;
memcpy(buffer, &Bitmap, count);
return count;
}
}
/* EOF */
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