Re: gtk_widget_class_install_style_property

["Matt Hoosier" <mwhoosier gmail com>]

Murray,

If I understand the intuition of calling the Glib::ObjectBase
constructor explicitly to supply a custom GType name, we're generating
a new GType for every C++ object instance. Is this correct?

If so, do we have any reason to be concerned about the overhead
implied by that, say after doing 100,000 instantiation/cleanup cycles
of a widget from that C++ class?

--Matt

On 6/8/06, Murray Cumming <murrayc murrayc com> wrote:
> On Tue, 2006-05-30 at 19:32 +0200, Murray Cumming wrote:
> > On Fri, 2006-05-26 at 10:43 +0200, Murray Cumming wrote:
> > > I've tried to get that working here:
> > > http://cvs.gnome.org/viewcvs/gtkmm/examples/book/custom/custom_widget/mywidget.cc?view=markup
> > > But while parsing my rc file:
> > > http://cvs.gnome.org/viewcvs/gtkmm/examples/book/custom/custom_widget/custom_gtkrc?view=markup
> > >
> > > I get this error:
> > > "
> > > custom_gtkrc:3: error: invalid identifier `examplescale', expected valid
> > > identifier
> > > "
> > >
> > > Maybe someone knows what I am doing wrong.
> >
> > I submitted a GTK+ bug about that error:
> > http://bugzilla.gnome.org/show_bug.cgi?id=343012
> >
> > However, even when I hack glibmm to produce custom types that start with
> > a capital letter, which fixes that error, I still can't seem to actually
> > get a value out of the rc file.
>
> The GTK+ bug is still there, so we still need to hack glibmm for now,
> but with that hack, I now have a working example:
> http://cvs.gnome.org/viewcvs/gtkmm/examples/book/custom/custom_widget/
>
> The secret (discovered on gtk-list gnome org) was that the style values
> are only available when the widget has been realized. Luckily, that's
> when we need them.
>
> --
> Murray Cumming
> murrayc murrayc com
> www.murrayc.com
> www.openismus.com
>
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