Java app - Jfree report - Loss of application focus

Question

Good day forum. I have an application that launches a JFree report preview window. From there users can click to print. The windows print dialog appears. The user can click OK or cancel. When they do this the focus goes to some other application running on their machine. In my case it's always my email. It's an annoying problem. The original print preview window remains.
Any ideas on how to have this not happen or why it is happening? I know it's a vague request. I don't know if it's a java, jfree, or windows problem.
Thanks.
ST

Answer 1

It's function keys that make your window lose the focus, right? If my understanding of that kind of thing is correct, these keys have specific actions to perform when hit. E.g. tab will set the focus on the next component in the focus cycle. You can stop your key from doing so by overwriting the processKeyEvent method of your component. This snippet is taken from a JTabel that isonly in the need for Enter and Tab to work. Maybe that might help you a little:
public boolean processKeyBinding(KeyStroke ks, KeyEvent e, int condition, boolean pressed){
        if(e.getKeyCode() == KeyEvent.VK_ENTER || e.getKeyCode() == KeyEvent.VK_TAB ){
            return super.processKeyBinding(ks,e,condition,pressed);
        } else {
            return false;
        }