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HMDisplayTag brocken in Leopard?

I wonder if this could be a bug and if anybody else is experiencing the same problem. We use HMDisplayTag to display help tags (in OpenGL scenes). Worked great in pre-Leopard but in Leopard the tag does not go away after keyboard input. Worse, AFAIK all the keyboard events are being lost. Once the tag pops us the user will have to move the mouse or wait for the timeout until keyboard input can resume.

according to http://developer.apple.com/documentation/Carbon/Reference/carbon_help_mgr/Reference/reference.html

the Carbon Help Manager automatically removes the help tag from the screen when user input occurs.

I assume user input includes keyboard input. Did this change? If so, what is the reason? More likely, is this a bug and is there any way around it?

The only thing that is special about our app is that the event handler that we have to use is, unfortunately, still based on WaitNextEvent. Could it be that keyboard events during a help tag create carbon events but will not register via WaitNextEvent and friends?

Alex
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