Support of flexible label for narrow column header

[Markus Elfring <Markus Elfring web de>]

Hello,

Member functions like "Gtk::TreeView::append_column" provide the feature to add
a column to a specific view.
http://developer.gnome.org/gtkmm/3.2/classGtk_1_1TreeView.html#a0253a5477ce006bf84fae8eb205efc73

They get a "Glib::ustring" as a parameter. I find that the width of
corresponding labels will become too big for some displayed values like small
numbers or from a boolean data type. Now I am looking for ways to adjust the
column header depending on width constraints.

Is a switch possible for the display of items like the following in the header?
- raster image
- vector graphic
- text with varying length (abbreviation, short or full label)

Regards,
Markus