[gtkada] Select_Row signal in Clist

[Arnaud Charlet]

> There is no To_Marshaller provided for this particular profile, and thus you
> indeed have to use the general form of the callbacks (that gets an array of
> arguments, and where you need to extract them yourself with the functions in
> Gtk.Arguments).

The other possibility of course is to provide your own Marshaller that will
do this extraction, and then call the real callback. See Gtk.Marshallers
for more details.

Incidentally, the exact same approach is used in C when people define new
signals, they also have to create/provide new marshallers.

Arno