[platform-swt-dev] A problem about widget redraw after disposal

[GCL Project G <gclprjg@xxxxxxxxxx>]

Hi all,
I encounter a problem in SWT programming.
In a composite, for example, a Group,
I add a Button:

        Shell
shell = new
Shell(new
Display());
        shell.setLayout(new
FillLayout(SWT.VERTICAL));
        Group
group = new
Group(shell, SWT.SHADOW_IN);
        group.setLayout(new
RowLayout(SWT.VERTICAL));
        Button
b = new
Button(group, SWT.BORDER);
        b.setText("1");
        shell.open();

Then, I call b's dispose() method:
        b.dispose();

Then, create a new Button in group:
        b = new
Button(group, SWT.BORDER);
        b.setText("2");

But now I see nothing in the view of
the group. Only when I resize the window, does the second button appear.
My problem is: How to let the second
button appear without having to resize the window?
I have tried shell.redraw();shell.update()
and group.redraw();group.update(),
but they don't work.

Thanks in advance!

Best regards,
-----------------------
Rafael ZHANG
GCL(Globalization Certification Laboratory), CSDL(China Software Development
Lab), IBM China
10/F, Shui On Plaza, 333 Middle Huai Hai Road, Shanghai 200021, P.R.China
TEL: (8621)63262288-5846
FAX: (8621)63261177
E-mail: gclprjg@xxxxxxxxxx