/**
  * Returns the source window handle.
  *
  * @return Handle to the window that generates the event, or NULL if no window is associated with
  *     the event.
  */
 public long getSourceWindowHandle() {
   return sourceWindowHandle.getValue();
 }
 /**
  * Returns the handle to an event hook.
  *
  * @return the hook handle
  */
 public long getHookHandle() {
   return hookHandle.getValue();
 }