I'm working on an alternative client for iRATE (http://irate.sourceforge.net/) in Perl/Tk. For the purpose of this question, the important thing is I'm trying to play mp3s one at a time using Xmms::Remote.

To play a single mp3 with Xmms::Remote, I create a one-file playlist and call the play method. Then -- here's the tricky part -- I have to find out when the song is over so I can play the next one.

The only way to detect this is the is_playing() method, which will return true as long as xmms is still playing. I have to put the next song on as soon as it returns false.

In the meantime, while the mp3 is playing, I have to handle all the usual Perl/Tk events, button-clicks and whatnot. Naively polling for the end of the song would lock up the app.

I'm new to Perl/Tk and event-based programming, but it seems this event I'm waiting for (is_playing returning false) is a lot like the events Perl/Tk's MainLoop is waiting on already.

Forgive me if I'm stupid and I missed some obvious documentation somewhere, but can anyone tell me how I can set up my own non-gui-related Perl/Tk event to handle this?

In reply to setting up non-gui callbacks in Perl/Tk by forrest

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