A function of this type is responsible for freeing the pixel array of a pixbuf. The
GdkPixbuf.Pixbuf.new_from_data() function lets you pass in a pre-allocated pixel array so that a pixbuf can be created from it; in this case you will need to pass in a function of
GdkPixbuf.PixbufDestroyNotifyso that the pixel data can be freed when the pixbuf is finalized.
Parameters: Returns: error: A location to return an error. Return type:
Specifies the type of the function passed to gdk_pixbuf_save_to_callback(). It is called once for each block of bytes that is “written” by gdk_pixbuf_save_to_callback(). If successful it should return
True. If an error occurs it should set error and return
False, in which case gdk_pixbuf_save_to_callback() will fail with the same error.
New in version 2.4.