+ wxRealPoint(const wxPoint& pt);
+
+ // no copy ctor or assignment operator - the defaults are ok
+
+ //assignment operators
+ wxRealPoint& operator+=(const wxRealPoint& p) { x += p.x; y += p.y; return *this; }
+ wxRealPoint& operator-=(const wxRealPoint& p) { x -= p.x; y -= p.y; return *this; }
+
+ wxRealPoint& operator+=(const wxSize& s) { x += s.GetWidth(); y += s.GetHeight(); return *this; }
+ wxRealPoint& operator-=(const wxSize& s) { x -= s.GetWidth(); y -= s.GetHeight(); return *this; }