2008/4/30 David Conley (FRD) <[EMAIL PROTECTED]>:
> Are modal dialog boxes possible in threads? I have this call in a thread
> seperate to the main gtk thread:
>
> gtk_dialog_run(GTK_DIALOG(errorDialog));
>
> and obviously that locks that thread while the main thread continues but
> nothing updates the display in the blocked thread and the app becomes
> unresponsive.
GTK is happiest if you keep all gtk_* calls in the main thread, and if
the main thread does (almost) nothing but run the gtk event loop.
If you need to start a thread to do a long running task, don't call
gtk stuff from the thread, instead send a message to the main thread
and ask it to make the calls on the thread's behalf. This is easy to
do with g_idle_add(), which you can call safely from a worker thread.
Something like:
on_button_click( ..
{
if (!app->bg_job)
app->bg_job = g_thread_create( background_job ..
}
background_job ( ..
{
for (int i = 0; i < 100; i++) {
char *str = g_strdup_printf ("... still working! %d", i);
g_idle_add (process_message, str);
sleep (1)
}
}
process_message (.. char *str)
{
gtk_label_set (app->status, str);
g_free (str);
}
John
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