https://forum.qt.io/topic/80749/how-to-viewpoert-size-of-framesize-save-only-the-canvas-not-the-scrollbars-of-qwidget
how to viewpoert size of frameSize save only the canvas not the scrollbars of QWidget | Qt Forum
Jun 28, 2017 - In continutaion with https://forum.qt.io/topic/80540/how-to-save-the-pixmap-of-qwidget-without-borders-what-is-way-we-can-save-best-quality-image/6 In the fo...