include/wx/mac/classic/dnd.h

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        dnd.h
   3 // Purpose:     Declaration of the wxDropTarget, wxDropSource class etc.
   4 // Author:      Stefan Csomor
   5 // RCS-ID:      $Id$
   6 // Copyright:   (c) 1998 Stefan Csomor
   7 // Licence:     wxWindows licence
   8 ///////////////////////////////////////////////////////////////////////////////
   9
  10 #ifndef _WX_DND_H_
  11 #define _WX_DND_H_
  12
  13 #if wxUSE_DRAG_AND_DROP
  14
  15 #include "wx/defs.h"
  16 #include "wx/object.h"
  17 #include "wx/string.h"
  18 #include "wx/string.h"
  19 #include "wx/dataobj.h"
  20 #include "wx/cursor.h"
  21
  22 //-------------------------------------------------------------------------
  23 // classes
  24 //-------------------------------------------------------------------------
  25
  26 class WXDLLEXPORT wxWindow;
  27
  28 class WXDLLEXPORT wxDropTarget;
  29 class WXDLLEXPORT wxTextDropTarget;
  30 class WXDLLEXPORT wxFileDropTarget;
  31
  32 class WXDLLEXPORT wxDropSource;
  33
  34 // ----------------------------------------------------------------------------
  35 // macros
  36 // ----------------------------------------------------------------------------
  37
  38 // this macro may be used instead for wxDropSource ctor arguments: it will use
  39 // the icon 'name' from an XPM file under GTK, but will expand to something
  40 // else under MSW. If you don't use it, you will have to use #ifdef in the
  41 // application code.
  42 #define wxDROP_ICON(X)   wxCursor( (const char**) X##_xpm )
  43
  44 //-------------------------------------------------------------------------
  45 // wxDropTarget
  46 //-------------------------------------------------------------------------
  47
  48 class WXDLLEXPORT wxDropTarget: public wxDropTargetBase
  49 {
  50   public:
  51
  52     wxDropTarget(wxDataObject *dataObject = (wxDataObject*) NULL );
  53
  54     virtual wxDragResult OnDragOver(wxCoord x, wxCoord y, wxDragResult def);
  55     virtual bool OnDrop(wxCoord x, wxCoord y);
  56     virtual wxDragResult OnData(wxCoord x, wxCoord y, wxDragResult def);
  57     virtual bool GetData();
  58
  59     bool CurrentDragHasSupportedFormat() ;
  60     void SetCurrentDrag( void* drag ) { m_currentDrag = drag ; }
  61     void* GetCurrentDrag() { return m_currentDrag ; }
  62   protected :
  63     void* m_currentDrag ;
  64 };
  65
  66 //-------------------------------------------------------------------------
  67 // wxDropSource
  68 //-------------------------------------------------------------------------
  69
  70 class WXDLLEXPORT wxDropSource: public wxDropSourceBase
  71 {
  72 public:
  73     // ctors: if you use default ctor you must call SetData() later!
  74     //
  75     // NB: the "wxWindow *win" parameter is unused and is here only for wxGTK
  76     //     compatibility, as well as both icon parameters
  77     wxDropSource( wxWindow *win = (wxWindow *)NULL,
  78                  const wxCursor &cursorCopy = wxNullCursor,
  79                  const wxCursor &cursorMove = wxNullCursor,
  80                  const wxCursor &cursorStop = wxNullCursor);
  81
  82     /* constructor for setting one data object */
  83     wxDropSource( wxDataObject& data,
  84                   wxWindow *win,
  85                  const wxCursor &cursorCopy = wxNullCursor,
  86                  const wxCursor &cursorMove = wxNullCursor,
  87                  const wxCursor &cursorStop = wxNullCursor);
  88
  89     ~wxDropSource();
  90
  91     // do it (call this in response to a mouse button press, for example)
  92     // params: if bAllowMove is false, data can be only copied
  93     virtual wxDragResult DoDragDrop(int flags = wxDrag_CopyOnly);
  94
  95     wxWindow*     GetWindow() { return m_window ; }
  96     void SetCurrentDrag( void* drag ) { m_currentDrag = drag ; }
  97     void* GetCurrentDrag() { return m_currentDrag ; }
  98         bool                    MacInstallDefaultCursor(wxDragResult effect) ;
  99   protected :
 100
 101     wxWindow        *m_window;
 102     void* m_currentDrag ;
 103 };
 104
 105 #endif
 106       // D&D
 107
 108 #endif
 109        //_WX_DND_H_
 110