void releaseWidget() {
super.releaseWidget();
if (imageList != null) imageList.dispose();
if (parent.lastFocus == this) parent.lastFocus = null;
imageList = null;
control = null;
}
long /*int*/ gtk_focus_out_event(long /*int*/ widget, long /*int*/ event) {
OS.GTK_WIDGET_UNSET_FLAGS(handle, OS.GTK_CAN_FOCUS);
parent.lastFocus = this;
return 0;
}