Is there a way to click on a toolbar and have it know and be able to access the last active control? And a way to enable or disable a toolbar depending on what control is active?

Basically, I want to put in the gotfocus something to turn the toolbar on, then while you're in that control, the toolbar can control its properties, and then in the lostfocus the toolbar gets disabled.

How do I do this?

Thanks,

-Michelle