[news.eclipse.platform.swt] Shell location problem

[j.andres.pizarro@xxxxxxxxx (josandres)]

I'm trying to show a dialog at a specific location with the following 
code. Notice that i'm making dialog visible when a mouse event is captured 
by a Swing component.

public void mouseClicked(MouseEvent e) {
[...]
else if ((e.getButton() == MouseEvent.BUTTON3) && (e.getClickCount() == 
1)) {		Display.getDefault().asyncExec(new Runnable () {
	public void run() {
               Shell shell = new Shell(SWT.ON_TOP);
               shell.setLocation(50,50);
		PlotRenderingDialog dialog = PlotRenderingDialog.getInstance(m_trace, 
new Shell(SWT.ON_TOP));
	dialog.open();
	}
});
}
[...]
}

The problem is that dialog appears in a random location, i mean, every 
time it appears it does in a different location.

If i use method setBounds(50, 50, width, height) it is positioned 
correctly but, i don't know the dialog size!

Any answers?