Question

I’m trying to implement a JPopupMenu over a text editor component. It should be activated on CTRL+m. Can I do that inside

@Override
public void keyPressed(KeyEvent arg0) {

}

and if yes, how? Because if I try

if(arg0.isControlDown()&&arg0.getKeyChar()=='m')

it doesn’t work.

Answer 1

At first I thought it was something to do with CTRL+M being the same thing as a carriage-return/line feed, but that wasn’t true. Try:

if(e.isControlDown() && e.getKeyCode() == KeyEvent.VK_M) {
    System.out.println("pressed");
    menu.setVisible(true);
}

I couldn’t get it to work using chars with e.getKeyChar() either, but the getKeyCode() works for me. Great, it works. But I’m the type that has to know why. So I found this:

KEY_PRESSED and KEY_RELEASED events
are not intended for reporting of
character input. Therefore, the values
returned by this method are guaranteed
to be meaningful only for KEY_TYPED
events