_plate(this, WidgetBase::Type_Plate),
_titlebar(this, WidgetBase::Type_Titlebar),
_button_close(&_titlebar, WidgetBase::Type_CloseButton),
_plate(this, WidgetBase::Type_Plate),
_titlebar(this, WidgetBase::Type_Titlebar),
_button_close(&_titlebar, WidgetBase::Type_CloseButton),