Java – stop the full screen window to minimize joptionpane showMessageDialog？

code

private MainApp() /* Extends JFrame */{
    DisplayMode displayMode = new DisplayMode(800,600,16,75);
    ScreenManager.setFullScreenWindow(displayMode,this);
}

problem

Whenever I call:

JOptionPane.showMessageDialog(MainApp.getInstance(),"Test Message @R_29_2419@");

The window was minimized for some reason, and then I had to reactivate it When the window is reactivated, a message box appears

problem

Is there any way to prevent the full screen window from being minimized when I call the message box?

Solution

Whenever the Mode dialog box (joptionpane, Jfilechooser, etc.) is displayed, JFrame will get a window_ DEACTIVATED WindowEvent. When your application is displayed in full screen, just ignore the window deactivation:

@Override
protected void processWindowEvent(WindowEvent e)
{
    if (e.getID() == WindowEvent.WINDOW_DEACTIVATED)
    {
        // windowState is set in my set full screen code
        if (windowState == WindowState.FULL_SCREEN)
        {
            return;
        }
    }        

    super.processWindowEvent(e);        
}

Be sure to set the parent of the modal dialog box correctly:

fileChooser.showOpenDialog(this);

"This" is your top JPanel, jinternalframe or JFrame