text: ///////////////////////////////////////////////////////////////////////////////
  // Name:        wx/gtk1/dataobj2.h
  // Purpose:     declaration of standard wxDataObjectSimple-derived classes
  // Author:      Robert Roebling
  // Created:     19.10.99 (extracted from gtk/dataobj.h)
  // Copyright:   (c) 1998, 1999 Vadim Zeitlin, Robert Roebling
  // Licence:     wxWindows licence
  ///////////////////////////////////////////////////////////////////////////////
  
  #ifndef _WX_GTK_DATAOBJ2_H_
  #define _WX_GTK_DATAOBJ2_H_
  
  // ----------------------------------------------------------------------------
  // wxBitmapDataObject is a specialization of wxDataObject for bitmaps
  // ----------------------------------------------------------------------------
  
  class WXDLLIMPEXP_CORE wxBitmapDataObject : public wxBitmapDataObjectBase
  {
  public:
      // ctors
      wxBitmapDataObject();
      wxBitmapDataObject(const wxBitmap& bitmap);
  
      // destr
      virtual ~wxBitmapDataObject();
  
      // override base class virtual to update PNG data too
      virtual void SetBitmap(const wxBitmap& bitmap);
  
      // implement base class pure virtuals
      // ----------------------------------
  
      virtual size_t GetDataSize() const { return m_pngSize; }
      virtual bool GetDataHere(void *buf) const;
      virtual bool SetData(size_t len, const void *buf);
  
  protected:
      void Init() { m_pngData = NULL; m_pngSize = 0; }
      void Clear() { free(m_pngData); }
      void ClearAll() { Clear(); Init(); }
  
      size_t      m_pngSize;
      void       *m_pngData;
  
      void DoConvertToPng();
  
  private:
      // virtual function hiding suppression
      size_t GetDataSize(const wxDataFormat& format) const
          { return(wxDataObjectSimple::GetDataSize(format)); }
      bool GetDataHere(const wxDataFormat& format, void* pBuf) const
          { return(wxDataObjectSimple::GetDataHere(format, pBuf)); }
      bool SetData(const wxDataFormat& format, size_t nLen, const void* pBuf)
          { return(wxDataObjectSimple::SetData(format, nLen, pBuf)); }
  };
  
  // ----------------------------------------------------------------------------
  // wxFileDataObject is a specialization of wxDataObject for file names
  // ----------------------------------------------------------------------------
  
  class WXDLLIMPEXP_CORE wxFileDataObject : public wxFileDataObjectBase
  {
  public:
      // implement base class pure virtuals
      // ----------------------------------
  
      void AddFile( const wxString &filename );
  
      virtual size_t GetDataSize() const;
      virtual bool GetDataHere(void *buf) const;
      virtual bool SetData(size_t len, const void *buf);
  
  private:
      // virtual function hiding suppression
      size_t GetDataSize(const wxDataFormat& format) const
          { return(wxDataObjectSimple::GetDataSize(format)); }
      bool GetDataHere(const wxDataFormat& format, void* pBuf) const
          { return(wxDataObjectSimple::GetDataHere(format, pBuf)); }
      bool SetData(const wxDataFormat& format, size_t nLen, const void* pBuf)
          { return(wxDataObjectSimple::SetData(format, nLen, pBuf)); }
  };
  
  #endif // _WX_GTK_DATAOBJ2_H_
  
  