'const' member functions

[Paul McKenzie]

The problem now is that having succesfully obtained the pointer, I can't use it !!!

My ultimate aim is to find the 'x' and 'y' co-ordinates for this window's mouse pointer:-

void functionB() const
{
gint x, y;
Gdk::ModifierType state;

	Glib::RefPtr<const Gdk::Window> p = canvas_event_box.get_window();

	p->get_pointer (x, y, state);
}

But the red line now gives me this error

If get_pointer() is non-const, then again, you're trying to call a non-const member function on a const object. That isn't going to work.

You need to go through the public interface of whatever Gdk::Window is, and identify which functions are const, which are non-const, and use the appropriate function.

Regards,

Paul McKenzie