Yeah, ShowTips for _SCREEN is TRUE.

The button with tip works fine on the normal screen when I am interactive. But in the app where we use READs and stuff, the WindowType ends up at 2. In this state, normal event-driven stuff does not seem to work.

I don't think I can add a DOS-style button because in the wait state the menu buttons (via @..GET) are the ones waiting for input at the bottom of the screen. I don't think we can have two sets of buttons up and active at once. There just doesn't appear to be a way of emulating event-driven stuff with the DOS type of screen (at least not with the mouse).