gdk:window-set-icon-name (window name)

window -- a toplevel gdk:window object
name -- a string with the name of window while iconified (minimized)

Windows may have a name used while minimized, distinct from the name they display in their titlebar. Most of the time this is a bad idea from a user interface standpoint. But you can set such a name with this function, if you like.

After calling this with a non-nil name, calls to the gdk:window-set-title function will not update the icon title.

Using nil for name unsets the icon title. Further calls to the gdk:window-set-title function will again update the icon title as well.