can I block the little red cross in the window to prevent the user from closing the window

[najlou]

can I block the little red cross in the window to prevent the user from closing the window please ?

[JonB]

@najlou
Try void QWindow::setFlag(Qt::WindowType flag, bool on = true) to remove something like the Qt::WindowCloseButtonHint flag from https://doc.qt.io/qt-5/qt.html#WindowType-enum. Read through the docs as there might be other flags you need to try to make it work.

[gde23]

However this will not block the user from closing the window if he really wants to.