[Glade-users] Sending events (somewhat OT)

[zephod at cfl.rr.com (Steve)]

---- Tristan Van Berkom <tristan.van.berkom at gmail.com> wrote: 
> On Sat, Mar 14, 2009 at 12:28 AM, Steve Blackwell <zephod at cfl.rr.com> wrote:
> > I have written a program using glade 3 that has 2 threads. The main
> > thread handles user input from the GUI while the second thread monitors
> > a USB port for input. When data arrives at the USB port, it is processed
> > and written to a GtkTreeView widget.
> >
> > The problem is that the data does not appear in the TreeView until I
> > move the mouse or press a key. I think that this is because the main
> > thread controlling the GUI is blocking in gtk_main() until an event
> > arrives. So I added code to the second thread to send a
> > GDK_CLIENT_EVENT to the GtkDialog widget that contains the TreeView.
> >
> > It didn't work.
>
> When you recieve data from your USB in your worker thread; call
> g_idle_add() to schedule a one time idle function in the main thread.
>
> From that function - call gtk_widget_queue_draw() on your treeview.

Unfortunately, that didn't work. I get the same results as before - ie the data is only displayed after a 
mouse or keyboard event is received. I also tried g_idle_add_full() and set the priority to 
G_PRIORITY_HIGH_IDLE but no luck there either.

Tomorrow I'll think about sending the data back to the UI thread and have that write to the treeview.

Thanks,
Steve