[platform-swt-dev] listener for visibility

[Thomas Braun <mail@xxxxxxxxxxxxxxx>]

Hello,

I have asked this question on the eclipse.platform.swt newsgroup, but 
nobody was able to help me.

Is there an option to add a listener to a control, which notifies me when 
the control becomes visible or invisible (similar to SWT.Show and SWT.Hide 
on menu items)?
My exact problem is that I have implemented a control with a behaviour 
similar to a combo. The difference is, that the dropped down shell stays 
visible until you press the button (a ToggleHyperlink) again (the combo 
hides the shell if it looses the focus). But if I place my control on a 
TabFolder page (for example), and switch to another page, the control is 
hidden and the shell not.
Any suggestions? If not, I would enter a feature request.

Regards,
Tom

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