widget-image-find

widget-image-find is a compiled Lisp function in `wid-edit.el'.

(widget-image-find IMAGE)

Create a graphical button from IMAGE.
IMAGE should either already be an image, or be a file name sans
extension (xpm, xbm, gif, jpg, or png) located in
`widget-image-directory' or otherwise where `find-image' will find it.