Sets an icon to be used as fallback for windows that haven't had gtk_window_set_icon_list() called on them from a file on disk. Warns on failure if err is NULL. Since 2.2
location of icon file. [type filename]
TRUE if setting the icon succeeded.
GException on failure.
See Implementation
Sets an icon to be used as fallback for windows that haven't had gtk_window_set_icon_list() called on them from a file on disk. Warns on failure if err is NULL. Since 2.2