Timer in DWT?

[Sam Hu]

Thanks BB,now it works when the run() method is invoked in the InitializeComponents() method,but it does not work when invoked in the ctor.How come? Thanks,Sam

class MainForm:Runnable
{
  private:
  Display display;
  Shell shell;
  Canvas canvas;
  void InitializeComponents()
  {
   display=new Display;
   shell=new Shell(display);
   canvas=new Canvas(shell,DWT.NONE);
   canvas.addPaintListener(new class PaintListener{
    public void paintControl(PaintEvent e)
    {
       auto layout=new Locale;

     e.gc.drawText(layout("{:dddd,dd MMMM yyyy HH':'mm':'ss z}",
                                WallClock.now),100,100);
   }});
   run;
   shell.open;
  while(! shell.isDisposed)
 {
    if(! display.readAndDispatch)
    display.sleep;
 }
  display.dispose;
 }
 public:
  this()
  {
    InitializeComponents;
    run;//invoke run() method here does not work?
  }
 void run()
  {
     canvas.redraw;
     display.getCurrent.timerExec(1000, this);

  }

}
int main(char[][] args)
{
 MainForm mainForm=new MainForm;
 return 0;
}