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                  ,const wxIcon& rGo = wxNullIcon
  34                  ,const wxIcon& rStop = wxNullIcon
  35                 );
  36
  37     /* constructor for setting one data object */
  38     wxDropSource( wxDataObject& rData,
  39                   wxWindow*     pWin,
  40                   const wxIcon& rGo = wxNullIcon,
  41                   const wxIcon& rStop = wxNullIcon
  42                 );
  43     virtual ~wxDropSource();
  44
  45     /* start drag action */
  46     virtual wxDragResult DoDragDrop(bool bAllowMove = FALSE);
  47
  48 protected:
  49     void Init(void);
  50     bool                            m_bLazyDrag;
  51
  52     DRAGIMAGE*                      m_pDragImage;
  53     DRAGINFO*                       m_pDragInfo;
  54     DRAGTRANSFER*                   m_pDragTransfer;
  55 };
  56
  57 //-------------------------------------------------------------------------
  58 // wxDropTarget
  59 //-------------------------------------------------------------------------
  60
  61 class WXDLLEXPORT wxDropTarget: public wxDropTargetBase
  62 {
  63 public:
  64     wxDropTarget(wxDataObject *dataObject = (wxDataObject*)NULL);
  65     virtual ~wxDropTarget();
  66
  67     void Register(WXHWND hwnd);
  68     void Revoke(WXHWND hwnd);
  69
  70     virtual wxDragResult OnDragOver(wxCoord x, wxCoord y, wxDragResult def);
  71     virtual bool OnDrop(wxCoord x, wxCoord y);
  72     virtual bool OnData(wxCoord x, wxCoord y);
  73     virtual bool GetData();
  74
  75   // implementation
  76 protected:
  77     virtual bool IsAcceptable(DRAGINFO* pInfo);
  78
  79     DRAGINFO*                       m_pDragInfo;
  80     DRAGTRANSFER*                   m_pDragTransfer;
  81 };
  82
  83 // ----------------------------------------------------------------------------
  84 // A simple wxDropTarget derived class for text data: you only need to
  85 // override OnDropText() to get something working
  86 // ----------------------------------------------------------------------------
  87
  88 class WXDLLEXPORT wxTextDropTarget : public wxDropTarget
  89 {
  90 public:
  91     wxTextDropTarget();
  92     virtual ~wxTextDropTarget();
  93
  94     virtual bool OnDropText( wxCoord         x
  95                             ,wxCoord         y
  96                             ,const wxString& rText
  97                            ) = 0;
  98
  99     virtual bool OnData( wxCoord x
 100                         ,wxCoord y
 101                        );
 102 };
 103
 104 // ----------------------------------------------------------------------------
 105 // A drop target which accepts files (dragged from File Manager or Explorer)
 106 // ----------------------------------------------------------------------------
 107
 108 class WXDLLEXPORT wxFileDropTarget : public wxDropTarget
 109 {
 110 public:
 111     wxFileDropTarget();
 112     virtual ~wxFileDropTarget();
 113
 114     // parameters are the number of files and the array of file names
 115     virtual bool OnDropFiles( wxCoord              x
 116                              ,wxCoord              y
 117                              ,const wxArrayString& rFilenames
 118                             ) = 0;
 119
 120     virtual bool OnData( wxCoord x
 121                         ,wxCoord y
 122                        );
 123 };
 124
 125 #endif //__OS2DNDH__
 126