[news.eclipse.platform.swt] Re: how to update the shell after invoke set

[bbskill <bbkills@xxxxxxx>]

I am afraid that is wrong .
I use asyncexec only to ensure the non-UI thread can execute while the
shell is openning.
see this code ,this is the same as before ,but only adds 			 
System.out.println("the size of the shell was "+ size);

	Display display = new Display();
        final Shell shell = new Shell(display);
        shell.setSize(200,200);
        display.asyncExec(new Runnable() {
            public void run() {
                while(true) {
                    try {
                        Thread.sleep(2000);
                    } catch (InterruptedException e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                    }
                    Point size = shell.getSize();
                    System.out.println("the size of the shell was "+ size);
                    shell.setSize(size.x+=50,size.y+=50);
                }
            }
        });
        shell.open();
        while(!shell.isDisposed())
            display.readAndDispatch();
        display.dispose();
you will see after the shell is openned ,the size of the shell is 
reported larger and larger ,but the actual size of the shell doesn't 
change.that means setSize() doesn't work after the shell is 
openned,except I use the setVisible(false) and setVisible(true) to
update the shell.

Rich Kulp wrote:
> You are sleeping in the UI thread, you are not running in another 
> thread. asyncexec does not start a new thread, it runs your runnable in 
> the UI thread. Because you are sleeping in the UI thread, you are 
> locking up the UI for 2 seconds so that nothing happens during that time.