On Fri, 2007-09-28 at 13:34 +0200, Martin Metzker wrote:
> Hi!
>
> I wrote this:
>
> class CCanvasGroup: public Gnome::Canvas::Group
> {
> public:
> CCanvasGroup(Gnome::Canvas::Group&, double, double);
> protected:
>
> private:
> Glib::RefPtr<Gdk::Pixbuf> whitetux;
> Glib::RefPtr<Gdk::Pixbuf> blacktux;
> Gnome::Canvas::Group m_group;
> };
>
> CCanvasGroup::CCanvasGroup(Gnome::Canvas::Group& parent, double x, double y)
> :m_group(parent,x,y)
This is rather strange. Do you want to inherit from a group, or do you
want to have a group as member. You probably need to call the Group
constructor, maybe like this:
CCanvasGroup::CCanvasGroup(Gnome::Canvas::Group& parent, double x,
double y)
> : Gnome::Canvas::Group(parent)
> {
> std::cout << "CCanvasGroup";
> whitetux = Gdk::Pixbuf::create_from_file(STONE_WHITE);
> blacktux = Gdk::Pixbuf::create_from_file(STONE_BLACK);
>
> Gnome::Canvas::Pixbuf(m_group,0,0, /*(CCanvasGroupCounter++ & 1) ?
> whitetux:*/blacktux);
> Gnome::Canvas::Text(m_group,0,whitetux->get_height(),"Hello world");
> std::cout << " done" << std::endl;
> }
>
> My mainwindow consists of a canvas and two buttons. One button simply places
> a Gnome::Canvas::Pixbuf, which works quite well. The other button is supposed
> to place a CCanvasGroup Object on the canvas. When i push the button i do get
> the output from the constructor, but nothing is displayed on the canvas. What
> did i forget?
>
>
> _______________________________________________
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