include/wx/cocoa/gdiobj.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        gdiobj.h
   3 // Purpose:     wxGDIObject class: base class for other GDI classes
   4 // Author:      David Elliott <dfe@cox.net>
   5 // Modified by:
   6 // Created:     2002/11/27
   7 // RCS-ID:
   8 // Copyright:   (c) AUTHOR
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_GDIOBJ_H_
  13 #define _WX_GDIOBJ_H_
  14
  15 #include "wx/object.h"
  16
  17 class WXDLLEXPORT wxGDIRefData: public wxObjectRefData {
  18 public:
  19     inline wxGDIRefData()
  20         {
  21         }
  22 };
  23
  24 #define M_GDIDATA ((wxGDIRefData *)m_refData)
  25
  26 class WXDLLEXPORT wxGDIObject: public wxObject
  27 {
  28 DECLARE_DYNAMIC_CLASS(wxGDIObject)
  29  public:
  30   wxGDIObject() : m_visible(FALSE) { }
  31   ~wxGDIObject() { }
  32
  33   bool IsNull() const { return (m_refData == 0); }
  34
  35   virtual bool GetVisible() { return m_visible; }
  36   virtual void SetVisible(bool v) { m_visible = v; }
  37
  38 protected:
  39   bool m_visible; // Can a pointer to this object be safely taken?
  40                  // - only if created within FindOrCreate...
  41 };
  42
  43 #endif
  44     // _WX_GDIOBJ_H_