Re: Warnings/Errors during Threaded Execution

[Havoc Pennington <hp redhat com>]

Mark Richardson wrote:
> I'm guessing that you're accessing some widgets in a separate thread (or 
> in your callbacks).  Whenever you do this, you need to lock the widgets 
> so that you're not modifying them while they are trying to be drawn.  So 
> in a callback, you need
> gdk_threads_leave();
> // the code that is needed for the callback
> gdk_threads_enter();
>  
> or, when you're in the thread that you started, you need to do the same 
> thing anytime that you're accessing widgets.
>  
> One last thing, in your main program, make sure that you do the following...
> gdk_threads_enter();
> gtk_main();
> gdk_threads_leave();
>  
> This way, the main loop runs correctly with threads.
>  
> I can't promise that this is the textbook example of how to work with 
> multithreads, but it's what I got working after many hours of trial & error.

There are docs on this, so it's not necessary to just try stuff ;-)
http://developer.gnome.org/doc/API/2.0/gdk/gdk-Threads.html

also, the question here is more appropriate for gtk-list/gtk-app-devel-list

Havoc