摇摆键盘没有响应

Question

I'm using a KeyListener on a JFrame object which I set as FullScreenWindow, something like this code:

class Game{

private GraphicsDevice device;
...

public void run(){
JFrame frame = new JFrame();
frame.addKeyListener(new MarioKeyListener());
device.setFullScreenWindow(frame);
}

...
}

And it works fine if I just create a Game object in my main method and call run(). However I want to do this inside the mousePressed() function of a MouseAdapter which I added to another JFrame-s MenuItem. The result is that the program runs as normal but doesn't accept any keyboard input.

JMenu gamemenu = new JMenu("Game");
   JMenuItem newGame = new JMenuItem("New Game");
    newGame.addMouseListener(new MouseAdapter() {
        public void mousePressed(MouseEvent e){
    Game g = new Game();
    g.run();    
    }               
});
gamemenu.add(newGame);

I think My frame object is not in focus, but calling setFocusable(true) and requestfocusinwindow() did not help. If anyone knows whats wrong or how to fix this, help would be greatly appreciated...

Tomi

Answer 1

requestFocusInWindow() ..

Requests that this Component get the input focus, if this Component's top-level ancestor is already the focused Window.

Are you checking the return value? I suspect it is failing because the new window is not the focused component at the moment the method is called.

If that is the case, the answer might be found in similar fashion to the dialog focus strategy of adding a RequestFocusListener to the mix.