Hi, To start, thank you for GTK+ 2 it's a cool API ! I need to wait on message queue (IPC) so I do that in a dedicated thread, I want to show a dialogue box when the data is ready. The dialog box shows but gtk_dialog_run doesn't return when I click on button. To clarify this I wrote a simple prog whith the same structure in attached file. Bye Stephane
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gthread.c
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