gtk-window-icon-name (object)

object -- a gtk-window widget
name -- a string with the name of the themed icon

Accessor of the icon-name slot of the gtk-window class.

The gtk-window-icon-name slot access function returns the name of the themed icon for the window. The (setf gtk-window-icon-name) slot access function sets the icon for the window from a named themed icon. See the gtk-icon-theme documentation for more details.

Note that this has nothing to do with the WM_ICON_NAME property which is mentioned in the Inter-Client Communication Conventions Manual (ICCCM).