Re: Using gtk_idle_add in a GNOME app, plus a little

[SEGV <mlepage cgocable net>]

James Smith wrote:
> 
> Not sure if this is the proper place to ask this, but it does deal with
> my GNOME app.  I'm trying to
> set up a routine to be regularly executed during the idle loop.  Right
> now the code is:
> 
> static void
> idle_cb(gpsui_app *data) {
>     static char buffer[81];
>     int  ret;
> 
>     gtk_idle_add(idle_cb, data);
>     if(data && data->magic == GPSUI_APP_MAGIC &&
>        gps_connection_active(data->connection) &&
>        (data->connection->locked == 0)) {
>         gps_connection_read(data->connection, buffer, 80);
>     } else
>     if(data && data->magic == GPSUI_APP_MAGIC &&
>        gps_connection_active(data->connection) &&
>        (data->connection->locked == 1)) {
>         g_print("connection locked...\n");
>     }
> }
> 
> If I don't have the gtk_idle_add at the beginning of the routine, it
> only gets called once.  Is there
> a way around this?

A good rule is to never hack around a problem without first double checking the
details for the root cause.

In this case, your callback's signature is wrong. It should be 

    static gint idle_cb(gpsui_app *data)

which will give you further clues to the problem.

You must return true or false depending on whether you want your callback to
remain registered or not.

See the GTK+ Tutorial s19 for details.


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SEGV    http://www.cgocable.net/~mlepage/