Re: Opening dialogs outside the Gtk thread?

[Tim Janik <timj gtk org>]

On Thu, 27 Oct 2005, Matthias Kaeppler wrote:

> Hi,
>
> I want to display a message dialog from a thread B running parallel to the 
> Gtk main thread A (it's a thread invoked by the async transfer methods from 
> gnome-vfs). When running the dialog directly, the program locks up, which is 
> what I expected since Gtk is not thread safe.
>
> So I downloaded the nautilus source code to see how they do it but they open 
> the dialog directly in a function which is not called from the Gtk main 
> thread using eel_run_simple_dialog() (I also downloaded the eel sources and I 
> couldn't find anything related to thread tunneling and dialogs in the 
> respective functions).
>
> How come it works for them without dispatching the call to the main thread, 
> but not for me? I already started to implement the mechanics to synchronize 
> both threads, but it's really a lot of code just to show a dialog from a 
> second thread... Am I missing something?

you can use gtk functions from any thread, as long as you take care to
acquire the gtk lock around any gtk functions:

  GDK_THREADS_ENTER ();
  fire up dialog here.
  GDK_THREADS_LEAVE ();

> Regards,
> Matthias

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ciaoTJ