include/wx/mac/carbon/gdiobj.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        gdiobj.h
   3 // Purpose:     wxGDIObject class: base class for other GDI classes
   4 // Author:      Stefan Csomor
   5 // Modified by:
   6 // Created:     1998-01-01
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Stefan Csomor
   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
  30 public:
  31     wxGDIObject() : m_visible(false) { }
  32     ~wxGDIObject() { }
  33
  34     bool IsNull() const { return (m_refData == 0); }
  35
  36     virtual bool GetVisible() { return m_visible; }
  37     virtual void SetVisible(bool v) { m_visible = v; }
  38
  39 protected:
  40     bool m_visible; // Can a pointer to this object be safely taken?
  41                     // - only if created within FindOrCreate...
  42 };
  43
  44 #endif
  45     // _WX_GDIOBJ_H_