Opening dialogs outside the Gtk thread?

[Matthias Kaeppler <matthias finitestate org>]

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?

Regards,
Matthias