Utilities Utility and miscellaneous convenience functions. These functions provide miscellaneous utilities for manipulating pixbufs. The pixel data in pixbufs may of course be manipulated directly by applications, but several common operations can be performed by these functions instead. #GdkPixbuf @pixbuf: @substitute_color: @r: @g: @b: @Returns: @src_pixbuf: @src_x: @src_y: @width: @height: @dest_pixbuf: @dest_x: @dest_y: