include/wx/os2/dnd.h

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        dnd.h
   3 // Purpose:     declaration of the wxDropTarget class
   4 // Author:      David Webster
   5 // Modified by:
   6 // Created:     10/21/99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1999 David Webster
   9 // Licence:     wxWindows license
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12
  13 #ifndef __OS2DNDH__
  14 #define __OS2DNDH__
  15
  16 #ifdef __GNUG__
  17 #pragma interface
  18 #endif
  19
  20 #if !wxUSE_DRAG_AND_DROP
  21     #error  "You should #define wxUSE_DRAG_AND_DROP to 1 to compile this file!"
  22 #endif  //WX_DRAG_DROP
  23
  24 //-------------------------------------------------------------------------
  25 // wxDropSource
  26 //-------------------------------------------------------------------------
  27
  28 class WXDLLEXPORT wxDropSource: public wxDropSourceBase
  29 {
  30 public:
  31     /* constructor. set data later with SetData() */
  32     wxDropSource(wxWindow* pWin);
  33
  34     /* constructor for setting one data object */
  35     wxDropSource( wxDataObject& rData,
  36                   wxWindow*     pWin
  37                 );
  38     virtual ~wxDropSource();
  39
  40     /* start drag action */
  41     virtual wxDragResult DoDragDrop(bool bAllowMove = FALSE);
  42
  43 protected:
  44     void Init(void);
  45     bool                            m_bLazyDrag;
  46
  47     DRAGIMAGE*                      m_pDragImage;
  48     DRAGINFO*                       m_pDragInfo;
  49     DRAGTRANSFER*                   m_pDragTransfer;
  50 };
  51
  52 //-------------------------------------------------------------------------
  53 // wxDropTarget
  54 //-------------------------------------------------------------------------
  55
  56 class WXDLLEXPORT wxDropTarget: public wxDropTargetBase
  57 {
  58 public:
  59     wxDropTarget(wxDataObject *dataObject = (wxDataObject*)NULL);
  60     virtual ~wxDropTarget();
  61
  62     void Register(WXHWND hwnd);
  63     void Revoke(WXHWND hwnd);
  64
  65     virtual wxDragResult OnDragOver(wxCoord x, wxCoord y, wxDragResult def);
  66     virtual bool OnDrop(wxCoord x, wxCoord y);
  67     virtual bool OnData(wxCoord x, wxCoord y);
  68     virtual wxDragResult OnData(wxCoord x, wxCoord y, wxDragResult vResult);
  69     virtual bool GetData();
  70
  71   // implementation
  72 protected:
  73     virtual bool IsAcceptable(DRAGINFO* pInfo);
  74
  75     DRAGINFO*                       m_pDragInfo;
  76     DRAGTRANSFER*                   m_pDragTransfer;
  77 };
  78
  79 // ----------------------------------------------------------------------------
  80 // A simple wxDropTarget derived class for text data: you only need to
  81 // override OnDropText() to get something working
  82 // ----------------------------------------------------------------------------
  83
  84 class WXDLLEXPORT wxTextDropTarget : public wxDropTarget
  85 {
  86 public:
  87     wxTextDropTarget();
  88     virtual ~wxTextDropTarget();
  89
  90     virtual bool OnDropText( wxCoord         x
  91                             ,wxCoord         y
  92                             ,const wxString& rText
  93                            ) = 0;
  94
  95     virtual bool OnData( wxCoord x
  96                         ,wxCoord y
  97                        );
  98     virtual wxDragResult OnData(wxCoord x, wxCoord y, wxDragResult vResult);
  99 };
 100
 101 // ----------------------------------------------------------------------------
 102 // A drop target which accepts files (dragged from File Manager or Explorer)
 103 // ----------------------------------------------------------------------------
 104
 105 class WXDLLEXPORT wxFileDropTarget : public wxDropTarget
 106 {
 107 public:
 108     wxFileDropTarget();
 109     virtual ~wxFileDropTarget();
 110
 111     // parameters are the number of files and the array of file names
 112     virtual bool OnDropFiles( wxCoord              x
 113                              ,wxCoord              y
 114                              ,const wxArrayString& rFilenames
 115                             ) = 0;
 116
 117     virtual bool OnData( wxCoord x
 118                         ,wxCoord y
 119                        );
 120     virtual wxDragResult OnData(wxCoord x, wxCoord y, wxDragResult vResult);
 121 };
 122
 123 #endif //__OS2DNDH__
 124