Embed widgets into QWindow

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Basically I want to create a window using QtGui.QWindow() instead of QtWidgets.QMainWindow().

I want to do this because I want to have access to QWindow functions such as:

  • startSystemMove()
  • setTitle()
  • setWindowStates()
  • startSystemResize()

At first I thought you make the window class inherit QtGui.QWindow, but if you do that, it just creates an empty window.

However, QWindow functions do work. So my guess is that I have to somehow input the QMainWindow (or the widgets inside it) into the QWindow, but I have no idea how.

pyqt5 python
1 Answers

So that there is an XY problem since the objective is to modify properties of the QWindow associated with the QWidget but instead it asks how to embed a QWidget into a QWindow.

QWidget creates a QWindow after using the show() method and it can be accessed using the windowHandle() method.

import sys

from PyQt5.QtCore import Qt, QTimer
from PyQt5.QtWidgets import QApplication, QMainWindow


def main():
    app = QApplication(sys.argv)

    mainwindow = QMainWindow()
    mainwindow.show()

    window = mainwindow.windowHandle()

    window.setTitle("Foo")

    def start_resize():
        window.startSystemResize(Qt.TopEdge)

    def start_move():
        window.startSystemMove()

    def maximized():
        window.setWindowStates(Qt.WindowMaximized)

    QTimer.singleShot(5 * 1000, start_resize)
    QTimer.singleShot(10 * 1000, start_move)
    QTimer.singleShot(15 * 1000, maximized)

    sys.exit(app.exec())


if __name__ == "__main__":
    main()

Note: Some methods of the QWidget are a wrapper of the QWindow methods such as setWindowTitle() or setWindowState().

user_66225870
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