Re: deleting text associated with a particular tag?

[Owen Taylor <otaylor redhat com>]

<skip pobox com> writes:

> How do I delete text from a GtkTextBuffer that is associated with a
> particular tag name?  There doesn't seem to be a TextView/TextBuffer example
> in the 1.3.x examples directory for me to work from and it's not obvious
> from looking at the function signatures and descriptions in the reference
> manual.

Well, the basic function you would use is:

gboolean gtk_text_iter_forward_to_tag_toggle (GtkTextIter *iter,
                                              GtkTextTag  *tag);

The code would look something like:

void
delete_text_with_tag (GtkTextBuffer *buffer, GtkTextTag *tag)
{
 GtkTextIter start;
 GtkTextIter end;

 gtk_text_iter_get_iter_at_offset (buffer, 0, &start);
 if (!gtk_text_iter_begins_tag (start, tag))
   if (!gtk_text_iter_forward_to_tag_toggle (&start, tag))
     return;

 do
   {
     end = start;
     gtk_text_iter_forward_to_tag_toggle (&end, tag);

     gtk_text_buffer_delete (buffer, &start, &end);
   } 
 while (gtk_text_iter_forward_to_tag_toggle (&start, tag);
}

[ Not tested ]

Regards,
                                        Owen