GtkEntry signals

[Matthias Mann <matman matman24 org>]

I need to have a dialog box for creating a new folder. Like
that what is used in GtkFileSelection. Now the dialog box is
ready for use. But i need a callback handler that does
something if a user inserts/deletes any text on the GtkEntry
and can't find a signal for doing this.
    
I've tried "insert-at-cursor" but nothing happens. In which
case this signal will be emitted? Is there any other signal
that i can use for this?
    
Mathew