gboolean gtk_text_buffer_delete_interactive ( GtkTextBuffer* buffer, GtkTextIter* start_iter, GtkTextIter* end_iter, gboolean default_editable )
Deletes all editable text in the given range.
gtk_text_buffer_delete() for each editable
sub-range of [
end are revalidated
to point to the location of the last deleted range, or left
untouched if no text was deleted.