gboolean gtk_window_set_default_icon_from_file ( const gchar* filename, GError** error )
Sets an icon to be used as fallback for windows that haven’t
gtk_window_set_icon_list() called on them from a file
on disk. Warns on failure if
Available since: 2.2
Location of icon file.
The data is owned by the caller of the function. The value is a file system path, using the OS encoding.
The return location for a recoverable error.
The argument can be
If the return location is not
NULL, then you must initialize it to a
The argument will be left initialized to
NULLby the function if there are no errors.
In case of error, the argument will be set to a newly allocated
GError; the caller will take ownership of the data, and be responsible for freeing it.