(ql:quickload '(:qtgui :qtcore :qtools))
(in-package :cl+qt)
(named-readtables:in-readtable :qtools)

(define-widget image-widget-holder (qwidget)
  ((widgets :reader widgets :initform '())))

(define-subwidget (image-widget-holder layout) (q+:make-qvboxlayout)
  (setf (q+:layout image-widget-holder) layout
        (q+:contents-margins layout) (values 0 0 0 0)))

(with-main-window (window (make-instance 'image-widget-holder)))