Re: Gtk::TextBuffer::signal_erase()

["Mr.Cashe" <mrcashe gmail com>]

Hi!
I got same results on gtkmm-2.22.0. Thank you for help, the problem 
resolved.

10.09.2011 00:45, Kjell Ahlstedt:
> Hi Mr.Cashe,
>
> I have tested my modified version of your test case both with gtkmm 2
> and gtmm 3. In both cases the result is
>
> on_cxx_insert(): pos = 0
> on_c_insert(): pos = 14
> on_cxx_erase(): start = 5, end = 8
> on_c_erase(): start = 5, end = 5
> Result = This a text
>
> Did you really add the parameter 'false' in
>    tb->signal_insert().connect(sigc::ptr_fun(on_cxx_insert), false);
>    tb->signal_erase().connect(sigc::ptr_fun(on_cxx_erase), false);
>
> See also Chris Vine's explanation.
>
> Kjell
>
> fre 2011-09-09 klockan 12:18 +0100 skrev Chris Vine:
> > On Fri, 09 Sep 2011 13:10:53 +1100
> > "Mr.Cashe"<mrcashe gmail com>  wrote:
> > > Thank you for link.
> > > With your modifications the output is follows:
> > > [mrcashe@home test]$ ./test
> > > on_c_insert(): pos = 14
> > > on_cxx_insert(): pos = 14
> > > on_c_erase(): start = 5, end = 5
> > > on_cxx_erase(): start = 5, end = 5
> > > Result = This a text
> > >
> > > In other words, both handlers runs after GtkTextBuffer builtin
> > > handler. The question is: how to install C++ handler BEFORE builtin
> > > handler? sigc++ does not providing smt. like
> > > sigc::signal::connect_before(). Am I right or not?
> > All GTK+ signals are executed through a glibmm SignalProxy object, and
> > the connect() method that glibmm/gtkmm present you with is a connect
> > method of the proxy, not of a sigc::signal object.  The connect method
> > of the SignalProxy takes a second bool 'after' argument, which by
> > default is true.  Pass a value of false to the 'after' argument of the
> > connect method if you don't want that.
> >
> > Annoyingly, this is the obverse of GTK+ signals, which by default
> > execute the connected callback before the built in handler.
> >
> > Chris
> >
> >
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