Gtk.AccelGroup.prototype.get_modifier_mask

function get_modifier_mask():Gdk.ModifierType {
    // Gjs wrapper for gtk_accel_group_get_modifier_mask()
}

Gets a Gdk.ModifierType representing the mask for this accel_group. For example, #GDK_CONTROL_MASK, #GDK_SHIFT_MASK, etc.

Since 2.14