Question

I have a Qt main window with QCheckBox and QPushButton and a sub QGLwidget class widget for graphics rendering.

I have put into void Ui_MainWindow::setupUi(QMainWindow *MainWindow) member function :

void Ui_MainWindow::setupUi(QMainWindow *MainWindow)
{
   pushButton_2 = new QPushButton(widget);
...
   checkBox_3 = new QCheckBox(widget);
...
    widget_2 = new GLWidget(widget);
    widget_2->setFocusPolicy(Qt::StrongFocus);
    widget_2->setFocus();
...
}

I have created signals which modify the graphics rendering of widget_2 :

void Ui_MainWindow::createSignals()
{ 
...
connect(pushButton_2, SIGNAL(clicked()), this, SLOT(pauseSimu()));  
connect(checkBox_3, SIGNAL(clicked()), this, SLOT(hideClassic()));     
...
}

To always keep the focus on widget_2 despite clicking on pushButton_2 or checkBox_3, I have to put into pauseSimu() and hideClassic() :

void Ui_MainWindow::pauseSimu()
{

widget_2->setFocus();

...

}

and

void Ui_MainWindow::hideClassic()
{

widget_2->setFocus();

...

}

The key events on widget_2 GLWidget are coded in the GLWidget class member functions.

How could I avoid to use setFocus() in all signals functions for always keeping the focus on widget_2 GLWidget ?

Answer 1

Try calling setFocusPolicy(Qt::NoFocus) on your button and checkbox.