Add a Key Listener to TitleAreaDialog

问题:

I need to add a key listener to my TitelAreaDialog is there any solution to do this ?

回答1:

You can add a Listener to the Display by using:

Listener listener = new Listener() {
    public void handleEvent(Event event) {
        System.out.println(event.character);
    }
}
getShell().getDisplay().addFilter(SWT.KeyDown, listener);

This will output all pressed keys without consuming the events, i.e. the underlying widgets will still register the events.

---

Remember to remove it again in the close() method of the Dialog:

@Override
public boolean close()
{
    getShell().getDisplay().removeFilter(SWT.KeyDown, listener);
    super.close();
}