Editing table with Gtk+

[romildo uber com br]

Hello.

I want to write a small program to edit a
simple table in Gtk+. The table corresponds
to a simple database stored in a text file.
Each line of the file is a record. Each colum
of the file is a field.

I want to edit the table in a Gtk+ widget.
It should support adding new records, deleting
records and changing record fields.

Which widget is easier for implementing this
program? Maybe there is a simple example program
ilustrating what I looking for. Any comments?

Romildo