I am having a small problem with a new "wait window"-type form I've created for my app.

I need to call this form ("WaitWind") and pass it some text, which it displays in the middle of the screen. So far, so good.
Then I need to return the focus back to the object that called the WaitWind form.
Once control has returned, and keypress or mouseclick anywhere needs to close that WaitWind form off. This is where I am stuck.

Any suggestions?