[gtkada] Cell_Renderer_Combo: how to act on characters typed to show match in combo

[Rob Groen]

Hello,

With a Cell_Renderer_Combo in a Tree_View I would like to act on typed
characters and show the nearest match in the Combo. The
Cell_Renderer_Combo has the property Has_Entry_Property set to True.
However, I don't see an appropriate signal to react on, nor any way to
get to the entry and associated buffer; that is needed to show the
non-typed part of the match as being selected.

How can I do this with Gtkada?

Regards
Rob Groen