Mouse events on an SWT Scrollbar

Answer 1

Paul,

try using addMouseEvent method from a Scrollable object. For example:

Scrollable scrollable = scrollbar.getParent();
scrollable.addMouseListener(new MouseListener () {
   void mouseDoubleClick(MouseEvent e) { ... }
   void mouseDown(MouseEvent e) { ... }
   void mouseUp(MouseEvent e)  { ... }
});

Actually, I don't know if this approach will work. But, it's an attempt. Good luck!

Answer 2

Scrollbar's javadoc said this:

When widgetSelected is called, the event object detail field contains one of the following values: SWT.NONE - for the end of a drag. SWT.DRAG. SWT.HOME. SWT.END. SWT.ARROW_DOWN. SWT.ARROW_UP. SWT.PAGE_DOWN. SWT.PAGE_UP. widgetDefaultSelected is not called.

So my suggestion is get your tooltip to appear and disappear is to check for the event.detail type.

public void widgetSelected(SelectionEvent event) {
    tip.setVisible(event.detail != SWT.NONE);
}

Answer 3

scrollBar.addSelectionListener(new SelectionListener() {
    public void widgetDefaultSelected(SelectionEvent e) {
    }

    public void widgetSelected(SelectionEvent e) {
     if (e.detail == SWT.NONE) {
      // end of drag
      System.out.println("Drag end");
     }
     else if (e.detail == SWT.DRAG) {
      // drag
      System.out.println("Currently dragging");
     }
    }
});

Hope this will help you... But I can see a problem with mousewheel use that throws multiple drag end events...