gtk:icon-source-filename (source)

source -- a gtk:icon-source instance
filename -- a string with the image file to use

Accessor of the filename of a gtk:icon-source instance. The gtk:icon-source-filename function retrieves the filename of the icon source, or nil if none is set. The (setf gtk:icon-source-filename) function sets the filename. The filename must be absolute. The gtk:icon-source-filename function has been deprecated since version 3.10 and should not be used in newly written code. Use the gtk:icon-theme API instead.