GtkTextBuffer: how to insert new line?

[Felix Kater <f kater2 gmx net>]

Hi,

how do I insert a new line after I inserted text into a GtkTextBuffer?

I am using gtk 2.4 (with win32/mingw) and got gtk errors when I tried to
insert "\n" into the text (this fist approach is probably completely
wrong, I suppose ...).

I read that there are bugs in gtk -- could not find anything adequate in
bugzilla.gnome.org.

Felix