How to stop interrupted callback from resuming

Question

Otis 2012-3-6

0
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https://ww2.mathworks.cn/matlabcentral/answers/31417-how-to-stop-interrupted-callback-from-resuming

Hi everyone,

I making a little movie playing utility. I have play forwards, play backwards and pause buttons on a uibuttongroup panel. When I click play forward, the uibuttongroup's SelectionChangeFcn is called. This function then calls "playMovie(1)". If I click play backwards, the SelectionChangeFcn callback calls "playMovie(-1)". (The pause button has the SelectionChangeFcn callback set a global flag to "stop"; the playMovie reads this flag and stops.) If I click "play reverse" while the play forward is running, the movie starts to play in reverse. That's what I want. However, the play forward call resumes where it left off. I want it to not do that :). I've tried various things but to no avail. Any one have any suggestions?

To clarify: I press "play forward" -> movie starts playing forward (call to playMovie(1)). While it's playing forward, I click "play reverse" -> movies starts to play in reverse (call to playMovie(-1)). When the movie stops (i.e. gets to frame 1), it immediately starts playing forward from where it was when i clicked "play reverse". The call to play forward (playMovie(1)), which had to have been interrupted, resumes where it left off. I don't want it to resume. I want it to stop.

Thanks times a million, Bill