void GrBitmap ( GR_DRAW_ID id, GR_GC_ID gc, GR_COORD x, GR_COORD y, GR_SIZE width, GR_SIZE height GR_BITMAP * bitmaptable );
The GrBitmap function draws a bitmap at the (x, y) coordinates of the drawable area using the gc graphics context. One bits in bitmaptable get drawn with the graphics context foreground color. If you set the usebackround mode for the graphics context, then zero bits in the bitmap get draw with the graphics context background color.