[gst-devel] Signals in GStreamer ???

[Tristan Van Berkom]

Jérôme Patey wrote:
[...]
>    What happens to the last parameter not used in the first function ? 
> It will stay on the stack ? Then the program should crash...

Nah,
     it wont bother crashing ;-)

Note that it's standard practice in GTK+ to ignore function params,
a typical example is somthing like:

g_signal_connect_swapped (G_OBJECT (quit_button), "clicked",
                           G_CALLBACK (gtk_widget_destroy),
                           (gpointer) main_window);

Pretty hardcore, but efficient.

Cheers,
                                    -Tristan

Note also that all object implementations have signal
handlers which omit the last "NULL" argument, that argument
is only used "user_data" arguments to g_signal_connect ().