Re: Gtk::DrawingArea

[Paul Davis <paul linuxaudiosystems com>]

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, ....