GtkScale small feature

[Havoc Pennington <hp redhat com>]

Hi,

If anyone wants a small useful GTK project, GtkScale could be hacked
so that a custom draw_value can be easily provided in a subclass; I
think this means you need to virtualize the get_value_width()
function, and then be sure there's a way for the implementor of a
custom draw_value() to determine the position where they should draw
the value.

Havoc