This function gets the ROP (raster-operation) code used to display images on Windows platforms.

Declaration:

AT_ERRCOUNT ACCUAPI IG_dspl_ROP_get(
        HIGEAR hIGear,
        DWORD dwGrpID,
        LPDWORD lpdwROP
);

Arguments:

Return Value:

Returns the number of ImageGear errors that occurred during this function call. If there are no errors, the return value is IGE_SUCCESS.

Supported Raster Image Formats:

All pixel formats supported by ImageGear for C and C++.

Example:

HIGEAR       hIGear;      /* HIGEAR handle of image */
DWORD        nGrpID;      /* display group identifier */
DWORD        dwROP;       /* retrieved ROP code */
 ...
/* get ROP code */ 
IG_dspl_ROP_get( hIGear, nGrpID, &dwROP ); 
 ...

Remarks:

This code determines how the source image pixels are combined with the destination area pixels. The default ROP is SRCCOPY, which overwrites the destination area with the source image. Other codes are described in the documentation for the Windows GDI function BitBlt.