I found part of the issue wrt to closing. So when you are creating the self._window in the attach function and you close the MainWindow, that other window (thread) is sitting around still. So if you add a self._window = None in the __init__ function and add a __del__ function as below, that part is … Read more
Note: In this answer, “Qt Widgets” refers to a Qt Widgets Application, selectable when creating a new Qt application. This is seven years after the question was first posted… but here’s my “objective” two cents to neutralise any developments since then. A Refresher Language Qt Quick projects use QML and JavaScript. The latter carries the … Read more
A QWidget is the base class for all drawable classes in Qt. Any QWidget-based class can be shown as a window by showing it when it has no parent. A QDialog is based on QWidget, but designed to be shown as a window. It will always appear in a window, and has functions to make … Read more