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Re: Conceptual Query: widget functions access [message #27447 is a reply to message #27441]

Sun, 18 July 2010 09:54

mrjt
Messages: 705
Registered: March 2007
Location: London

Contributor

Two methods immediately suggest themselves:
- Overload ChildMouseEvent on the TopWindow to pick up MouseEnter and MouseLeave events on it's children. You can then use OverrideCursor to set the mouse cursor.

- USe a template:

template <class T>
clss WithCursorImage : public T
{
   Image cursorimage;
public:
   WithCursor() { cursorimage = Image::Arrow(); }
   T& SetCursorImage(Image img) { cursorimage = img; return *this; }
   virtual void CursorImage(Point p) {
      Image img = T::CursorImage(p);
      if (img == Image::Arrow())
         img = cursorimage;
      return img;
   }
};

(from memory, so there may be some small errors though the logic is correct)

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