[platform-swt-dev] How to add key event filter for an application?

[Xiong Huan-a16898 <huan.xiong@xxxxxxxxxxxx>]

Title: Message

Hi,

 

Can I intercept key or mouse events before they are sent to widgets? I have checked API document and found Display class has addListener(int eventType, Listener listener) method. However, when I tried the following code snippet, it never got called at all when I pressed key.

 

     display.addListener(SWT.KeyDown, new Listener() {

          public ovid handleEvent(Event e) {

               System.out.println("Hello, world!");

          }

     });

 

Can anybody throw some light on this problem? Thanks.