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 bool GetData();
  69
  70   // implementation
  71 protected:
  72     virtual bool IsAcceptable(DRAGINFO* pInfo);
  73
  74     DRAGINFO*                       m_pDragInfo;
  75     DRAGTRANSFER*                   m_pDragTransfer;
  76 };
  77
  78 // ----------------------------------------------------------------------------
  79 // A simple wxDropTarget derived class for text data: you only need to
  80 // override OnDropText() to get something working
  81 // ----------------------------------------------------------------------------
  82
  83 class WXDLLEXPORT wxTextDropTarget : public wxDropTarget
  84 {
  85 public:
  86     wxTextDropTarget();
  87     virtual ~wxTextDropTarget();
  88
  89     virtual bool OnDropText( wxCoord         x
  90                             ,wxCoord         y
  91                             ,const wxString& rText
  92                            ) = 0;
  93
  94     virtual bool OnData( wxCoord x
  95                         ,wxCoord y
  96                        );
  97 };
  98
  99 // ----------------------------------------------------------------------------
 100 // A drop target which accepts files (dragged from File Manager or Explorer)
 101 // ----------------------------------------------------------------------------
 102
 103 class WXDLLEXPORT wxFileDropTarget : public wxDropTarget
 104 {
 105 public:
 106     wxFileDropTarget();
 107     virtual ~wxFileDropTarget();
 108
 109     // parameters are the number of files and the array of file names
 110     virtual bool OnDropFiles( wxCoord              x
 111                              ,wxCoord              y
 112                              ,const wxArrayString& rFilenames
 113                             ) = 0;
 114
 115     virtual bool OnData( wxCoord x
 116                         ,wxCoord y
 117                        );
 118 };
 119
 120 #endif //__OS2DNDH__
 121