include/wx/motif/gdiobj.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        gdiobj.h
   3 // Purpose:     wxGDIObject class: base class for other GDI classes
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     17/09/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   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     inline wxGDIObject() { m_visible = false; };
  31     inline ~wxGDIObject() {};
  32
  33     inline 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_