| 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 licence |
| 10 | /////////////////////////////////////////////////////////////////////////////// |
| 11 | |
| 12 | |
| 13 | #ifndef __OS2DNDH__ |
| 14 | #define __OS2DNDH__ |
| 15 | |
| 16 | #if !wxUSE_DRAG_AND_DROP |
| 17 | #error "You should #define wxUSE_DRAG_AND_DROP to 1 to compile this file!" |
| 18 | #endif //WX_DRAG_DROP |
| 19 | |
| 20 | #define INCL_WINSTDDRAG |
| 21 | #include <os2.h> |
| 22 | #ifndef __EMX__ |
| 23 | #include <pmstddlg.h> |
| 24 | #endif |
| 25 | |
| 26 | class CIDropTarget; |
| 27 | |
| 28 | //------------------------------------------------------------------------- |
| 29 | // wxDropSource |
| 30 | //------------------------------------------------------------------------- |
| 31 | |
| 32 | class WXDLLEXPORT wxDropSource: public wxDropSourceBase |
| 33 | { |
| 34 | public: |
| 35 | /* constructor. set data later with SetData() */ |
| 36 | wxDropSource(wxWindow* pWin); |
| 37 | |
| 38 | /* constructor for setting one data object */ |
| 39 | wxDropSource( wxDataObject& rData, |
| 40 | wxWindow* pWin |
| 41 | ); |
| 42 | virtual ~wxDropSource(); |
| 43 | |
| 44 | /* start drag action */ |
| 45 | virtual wxDragResult DoDragDrop(int flags = wxDrag_CopyOnly); |
| 46 | virtual bool GiveFeedback(wxDragResult eEffect); |
| 47 | |
| 48 | protected: |
| 49 | void Init(void); |
| 50 | |
| 51 | ULONG m_ulItems; |
| 52 | PDRAGINFO m_pDragInfo; |
| 53 | DRAGIMAGE m_vDragImage; |
| 54 | PDRAGITEM m_pDragItem; |
| 55 | wxWindow* m_pWindow; |
| 56 | }; // end of CLASS wxDropSource |
| 57 | |
| 58 | //------------------------------------------------------------------------- |
| 59 | // wxDropTarget |
| 60 | //------------------------------------------------------------------------- |
| 61 | |
| 62 | class WXDLLEXPORT wxDropTarget : public wxDropTargetBase |
| 63 | { |
| 64 | public: |
| 65 | wxDropTarget(wxDataObject* pDataObject = (wxDataObject*)NULL); |
| 66 | virtual ~wxDropTarget(); |
| 67 | |
| 68 | // |
| 69 | // These functions are called when data is moved over position (x, y) and |
| 70 | // may return either wxDragCopy, wxDragMove or wxDragNone depending on |
| 71 | // what would happen if the data were dropped here. |
| 72 | // |
| 73 | // The last parameter is what would happen by default and is determined by |
| 74 | // the platform-specific logic (for example, under Windows it's wxDragCopy |
| 75 | // if Ctrl key is pressed and wxDragMove otherwise) except that it will |
| 76 | // always be wxDragNone if the carried data is in an unsupported format. |
| 77 | // |
| 78 | // OnData must be implemented and other should be overridden by derived classes |
| 79 | // |
| 80 | virtual wxDragResult OnData( wxCoord vX |
| 81 | ,wxCoord vY |
| 82 | ,wxDragResult eResult |
| 83 | ); |
| 84 | virtual bool OnDrop( wxCoord vX |
| 85 | ,wxCoord vY |
| 86 | ); |
| 87 | bool IsAcceptedData(PDRAGINFO pDataSource) const; |
| 88 | |
| 89 | protected: |
| 90 | virtual bool GetData(void); |
| 91 | wxDataFormat GetSupportedFormat(PDRAGINFO pDataSource) const; |
| 92 | void Release(void); |
| 93 | |
| 94 | private: |
| 95 | CIDropTarget* m_pDropTarget; |
| 96 | }; // end of CLASS wxDropTarget |
| 97 | |
| 98 | #endif //__OS2DNDH__ |
| 99 | |