GtkListStore and other things

[Martin Klaffenboeck <martin klaffenboeck gmx at>]

Hello,

I just know about the reference manual for gtk+2.0 and the gtk-demo 
files in the source tree. I'm using plain c in my first application, to 
get a good feeling for the gtk library. Now I've got some questions:

Can a TreeView be used to modify data?  I would like to create a 
Vocabulary list this way.  Can that be edited like a Spread Sheet 
program edits its columns and rows? (I have just 2 Columns.)

If that works:  How can I add a empty row for inputing new vocabularies?

Is there a special way to work with strings with the gtk library?  Or 
do we have to use just a gchar with allocationg and reallocationg the 
memory here?  Or is there a easyer way?  (How do I handle User Inputs 
at best, when I don't really know how long the Strings will be which 
are coming from the user?)

Thanks for links or for direct answer in the list.

Martin