Support for column/row grouping

[Markus Elfring <Markus Elfring web de>]

Hello!

The example "http://www.sencha.com/examples/pages/grid/columngrouping.html";
shows an application feature I'm also interested in for table widgets.

Does a similar gtkmm extension exist which supports the hierarchical grouping of
columns and/or rows like it is demonstrated by a framework for the Google Web
Toolkit?

Regards,
Markus