Re: [Fwd: Re: How to clear/replace filter list in File Chooser?] Gtk::DrawingArea

["Paul Davis" <pjdavis engineering uiowa edu>]

On 2/21/07, TheLonelyStar <nabble lonely-star org> wrote:
> Thanks for your answer!
>
> My function looks now like this:
>
> Gtk::DrawingArea* tmp=(Gtk::DrawingArea*)refXml->get_widget("DrawingArea");
> Glib::RefPtr<Gdk::Window> window(tmp->get_window());
>
> window->draw_arc(tmp->get_style()->get_fg_gc[tmp->get_state()],
>                                  TRUE,
>                                  0, 0, 550,550,
>                                  0, 64 * 360);
>
> Unfortantly I still have problems:
>
> g++ $(pkg-config --libs --cflags gtkmm-2.4) $(pkg-config --libs --cflags
> libglademm-2.4) main.cc
> main.cc: In function 'bool do_draw(GdkEventExpose*)':
> main.cc:31: error: invalid types '<unresolved overloaded function
> type>[Gtk::StateType]' for array subscript
>
> Line 31 is the "window->draw_arc" line.
>
>
> Paul Davis wrote:
> >
> > On Tue, 2007-02-20 at 14:47 -0800, TheLonelyStar wrote:
> >> Hello dear community,
> >>
> >> I have trouble with Gtk::DrawingArea. Since the class seem to have no
> >> more
> >> than the gobj() member function, I tried the following (copying from
> >> examples I found in the net):
> >>
> >> bool on_exposure(GdkEventExpose* event)
> >> {
> >>      Gtk::DrawingArea*
> >> tmp=(Gtk::DrawingArea*)refXml->get_widget("DrawingArea");
> >>      GtkDrawingArea* da=tmp->gobj();
> >>      gdk_draw_arc (da->window,
> >>                                da->style->fg_gc[GTK_WIDGET_STATE (da)],
> >>                                TRUE,
> >>                                0, 0, da->allocation.width, da->allocation.height,
> >>                                0, 64 * 360);
> >>      return true;
> >> }
> >
> > better:
> >
> >       Glib::RefPtr<Gdk::Window> window (tmp->get_window());
> >       window->draw_arc (tmp->get_style()->fg_gc[tmp->get_state()],
> >                           true, ....
> >
> >
> > _______________________________________________
> > gtkmm-list mailing list
> > gtkmm-list gnome org
> > http://mail.gnome.org/mailman/listinfo/gtkmm-list
> >
> >
>
> --
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>
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I think the other Paul might have had a type.  As far as I can tell
fg_gc returns a Gtk::Color object which has no operator[].

Try this:

window->draw_arc(tmp->get_style()->get_fg_gc( tmp->get_state() ),
                                 TRUE,
                                 0, 0, 550,550,
                                 0, 64 * 360);

HTH,
Other Paul Davis