Cannot make widget full screen

[GunkutA]

Hello I am trying to make full screen the form I am using, when the spesific key pressed. I am using this part of the code for that:

void protocolForm::keyPressEvent(QKeyEvent *event)
{
  .
 .
 .
 .
 .
    else if(event->key()==Qt::Key_F)
    {

        if(isFullScreen())
        {
            this->setWindowState(this->windowState() | Qt::WindowMaximized);

        }
        else
        {
            this->setWindowState(this->windowState() | Qt::WindowFullScreen);
            qDebug()<<"F PRESSED.";
        }
    }
}

Although it entert the else if statement. It never changes the window size.

[jsulm]

@GunkutA said in Cannot make widget full screen:

So can I only make windows fullscreen?

You can make QWidget full-screen if it is a window (does not have parent).

[Bonnie]

Is this protocolForm a window?
You cannot make a child widget full screen.

[GunkutA]

@Bonnie That is a QWidget. So can I only make windows fullscreen?

[jsulm]

@GunkutA said in Cannot make widget full screen:

So can I only make windows fullscreen?

You can make QWidget full-screen if it is a window (does not have parent).