[pygtk] gobject question

[shawn bright]

hello there all,

i have a few threads running that write to the same text veiwer.
sometimes when the program is running i get this in the terminal window.

GtkWarning: Invalid text buffer iterator: either the iterator is
uninitialized, or the characters/pixbufs/widgets in the buffer have
been modified since the iterator was created.
You must use marks, character numbers, or line numbers to preserve a
position across buffer modifications.
You can apply tags and insert marks without invalidating your iterators,
but any mutation that affects 'indexable' buffer contents (contents
that can be referred to by character offset)
will invalidate all outstanding iterators


this is the function i use to write data to the viewer

def write_to_viewer(data, buffer, viewer):
    data = '%s\n' % data
    buffer.insert(buffer.get_end_iter(), data)
    if buffer.get_line_count() > 1000:
        buffer.delete(buffer.get_start_iter(),  buffer.get_iter_at_line(200))
    mark = buffer.create_mark("end", buffer.get_end_iter(), False)
    viewer.scroll_to_mark(mark, 0.05, True, 0.0, 1.0)

then in each  thread i have
write_to_viewer(self, data, self.main_buffer, self.main_view)

and it gets called like this

gobject.idle_add(self.write_to_viewer, data)

anything i can do to clear that error ? or is it no big deal ?

thanks

sk