QDockWidget: How to let the float widget back to mainwindow when click close button.

[brucezcg]

How to let the float QDockWidget back to window when click close button.

[Gojir4]

Hi,

You can do something like that:

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    //...
    ui->setupUi(this);
   connect(ui->dockWidget, &QDockWidget::visibilityChanged, this,  &MainWindow::dockWidgetVisibilityChanged);
    //...
}

void MainWindow::dockWidgetVisibilityChanged(bool visible)
{   
    if(ui->dockWidget->isFloating() && !visible){
        QTimer::singleShot(100, this, &MainWindow::restoreDock);
    }
}

void MainWindow::restoreDock()
{
    ui->dockWidget->setFloating(false);
    ui->dockWidget->setVisible(true);
}

Note that this will not work in case you have enabled GrouppedDragging dockOption in MainWindow and you have a floating windows with several dock tabbed, as the docks are seens as "not floating".

[brucezcg]

It did work. Great,Thanks.