Gtk::DrawingArea and libglademm

["Javier Aranega" <javi aranega gmail com>]

Hi !

I work with Gtkmm 2.4 and libglademm  and I have to do a simple draw that represents a midi track, something like that

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    Bar 1        Bar
2      Bar
3       Bar
4       Bar
5        Bar
6         Bar 7

My program do music style classification of midi files and I have to
fill the bars with different colors according to the results of
classification, and if the user clicks on each bar I have to show some
extra information.

I have differents questions about that.

* With the gtkmm-2.4 API I have to work with GDK functions, not with
cairomm? I have to install the 2.10 version to work with cairomm? It's
really better?

* My Gtk::DrawingArea is created with Glade and it's referenced with
refXml->get_widget(). I don't know how to do that my class be a
subclass of the DrawingArea that I've created with Glade and the widget
call the on_expose_event(GdkEventExpose *event) to redraw every time is
needed.

Every help or example is welcome.

Thanks in advance.

Javi Aránega
University of Alicante
Spain