Qt hide minimize, maximize and close buttons

Question

Do you know how to hide minimize, maximize and close buttons of title bar in Qt. I especially need to hide it on QMainWindow.

Answer 1

Just watch how Window Flags Example works!

Answer 2

For the close button, you can override the closeEvent() of QmainWindow

class MainWindow(QMainWindow):    
    def closeEvent(self, event):
        event.ignore()
        return

Answer 3

Set this window flags Qt::Window | Qt::WindowTitleHint | Qt::CustomizeWindowHint

Note, that on some platforms it behaves in different way. For example on Mac OS X it Disables, (not hides) close/minimize/maximize buttons

Answer 4

This can be achived by using an eventFilter on the QEvent::Close event from your MainWindow

bool MainWindow::eventFilter(QObject *obj, QEvent *event) {

    if (event->type() == QEvent::Close) {
        event->ignore();
        doWhateverYouNeedToDoBeforeClosingTheApplication();
        return true;
    }
    return QMainWindow::eventFilter(obj, event);
}

void MainWindow::doWhateverYouNeedToDoBeforeClosingTheApplication() {
    // Do here what ever you need to do
    // ...
    // ...

    // and finally quit
    qApp->quit();
}

Answer 5

If you are using Qt qml then, to remove minimize, maximize and close button, set the frameless window flag in the window function in your main.qml file, like below:

flags: Qt.FramelessWindowHint

Answer 6

flags: Qt.Dialog | Qt.WindowCancelButtonHint | Qt.WindowCloseButtonHint

this also works for a window item

flags: Qt.Window | Qt.WindowTitleHint