How to hide Close Button "X" on Widget ?

[MhmRhm]

I did it a few minutes ago for my application. In main.cpp, write:



Now you do not have close button, neither a menu close and ALT-F4 won't work.
Hope this can be helpful.

I'm using Qt4 under Linux

I believe another way around would be hijacking close event, add this ti header file:

private:
	void closeEvent(QCloseEvent *event) override;

private:
	void closeEvent(QCloseEvent *event) override;

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and this to cpp file:

void MainWindow::closeEvent(QCloseEvent *event)
{
	cout << "Here in close" << endl;
	event->ignore();
}

void MainWindow::closeEvent(QCloseEvent *event)
{
	cout << "Here in close" << endl;
	event->ignore();
}

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More info? https://doc.qt.io/qt-5/qwidget.html#closeEvent