static HRGN UXTHEME_RegionFromDibBits(RGBQUAD* pBuffer, RGBQUAD* pclrTransparent, LPCRECT pRect)
{
int x, y, xstart;
-#ifdef EXTCREATEREGION_WORKS
int cMaxRgnRects, cRgnDataSize, cRgnRects;
RECT* prcCurrent;
PRGNDATA prgnData;
-#else
- HRGN hrgnTemp;
-#endif
ULONG clrTransparent, *pclrCurrent;
HRGN hrgnRet;
pclrCurrent = (PULONG)pBuffer;
clrTransparent = *(PULONG)pclrTransparent;
-#ifdef EXTCREATEREGION_WORKS
/* Create a region and pre-allocate memory enough for 3 spaces in one row*/
cRgnRects = 0;
cMaxRgnRects = 4* (pRect->bottom-pRect->top);
prgnData = (PRGNDATA)HeapAlloc(GetProcessHeap(), 0, cRgnDataSize);
prcCurrent = (PRECT)prgnData->Buffer;
-#else
- hrgnRet = CreateRectRgn(0,0,0,0);
-#endif
/* Calculate the region rects */
y=0;
pclrCurrent++;
}
-#ifdef EXTCREATEREGION_WORKS
/* Add the scaned line to the region */
SetRect(prcCurrent, xstart, y,x,y+1);
prcCurrent++;
cRgnDataSize);
prcCurrent = (RECT*)prgnData->Buffer + cRgnRects;
}
-#else
- hrgnTemp = CreateRectRgn(xstart, y,x,y+1);
- CombineRgn(hrgnRet, hrgnRet, hrgnTemp, RGN_OR );
- DeleteObject(hrgnTemp);
-#endif
}
else
{
y++;
}
-#ifdef EXTCREATEREGION_WORKS
/* Fill the region data header */
prgnData->rdh.dwSize = sizeof(prgnData->rdh);
prgnData->rdh.iType = RDH_RECTANGLES;
/* Free the region data*/
HeapFree(GetProcessHeap(),0,prgnData);
-#endif
/* return the region*/
return hrgnRet;