Retrieves the #GIcon being displayed by the #GtkStatusIcon.
The storage type of the status icon must be %GTK_IMAGE_EMPTY or
%GTK_IMAGE_GICON (see gtk_status_icon_get_storage_type()).
The caller of this function does not own a reference to the
returned #GIcon.
Retrieves the #GIcon being displayed by the #GtkStatusIcon. The storage type of the status icon must be %GTK_IMAGE_EMPTY or %GTK_IMAGE_GICON (see gtk_status_icon_get_storage_type()). The caller of this function does not own a reference to the returned #GIcon.
If this function fails, @icon is left unchanged;