The name of the file to identify.
Return location for the width of the image, or NULL
Return location for the height of the image, or NULL
A gdkpixbuf.PixbufFormat describing the image format of the file or NULL if the image format wasn't recognized. The return value is owned by gdk.Pixbuf and should not be freed.
2.4
Parses an image file far enough to determine its format and size.