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///////////////////////////////////////////////////////////////////////////////
// Name: wx/os2/dnd.h
// Purpose: declaration of the wxDropTarget class
// Author: David Webster
// Modified by:
// Created: 10/21/99
// Copyright: (c) 1999 David Webster
// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
#ifndef __OS2DNDH__
#define __OS2DNDH__
#if !wxUSE_DRAG_AND_DROP
#error "You should #define wxUSE_DRAG_AND_DROP to 1 to compile this file!"
#endif //WX_DRAG_DROP
#define INCL_WINSTDDRAG
#include <os2.h>
#ifndef __EMX__
#include <pmstddlg.h>
#endif
class CIDropTarget;
//-------------------------------------------------------------------------
// wxDropSource
//-------------------------------------------------------------------------
class WXDLLIMPEXP_CORE wxDropSource: public wxDropSourceBase
{
public:
/* constructor. set data later with SetData() */
wxDropSource(wxWindow* pWin);
/* constructor for setting one data object */
wxDropSource( wxDataObject& rData,
wxWindow* pWin
);
virtual ~wxDropSource();
/* start drag action */
virtual wxDragResult DoDragDrop(int flags = wxDrag_CopyOnly);
virtual bool GiveFeedback(wxDragResult eEffect);
protected:
void Init(void);
ULONG m_ulItems;
PDRAGINFO m_pDragInfo;
DRAGIMAGE m_vDragImage;
PDRAGITEM m_pDragItem;
wxWindow* m_pWindow;
}; // end of CLASS wxDropSource
//-------------------------------------------------------------------------
// wxDropTarget
//-------------------------------------------------------------------------
class WXDLLIMPEXP_CORE wxDropTarget : public wxDropTargetBase
{
public:
wxDropTarget(wxDataObject* pDataObject = NULL);
virtual ~wxDropTarget();
//
// These functions are called when data is moved over position (x, y) and
// may return either wxDragCopy, wxDragMove or wxDragNone depending on
// what would happen if the data were dropped here.
//
// The last parameter is what would happen by default and is determined by
// the platform-specific logic (for example, under Windows it's wxDragCopy
// if Ctrl key is pressed and wxDragMove otherwise) except that it will
// always be wxDragNone if the carried data is in an unsupported format.
//
// OnData must be implemented and other should be overridden by derived classes
//
virtual wxDragResult OnData( wxCoord vX
,wxCoord vY
,wxDragResult eResult
);
virtual bool OnDrop( wxCoord vX
,wxCoord vY
);
bool IsAcceptedData(PDRAGINFO pDataSource) const;
protected:
virtual bool GetData(void);
wxDataFormat GetSupportedFormat(PDRAGINFO pDataSource) const;
void Release(void);
private:
CIDropTarget* m_pDropTarget;
}; // end of CLASS wxDropTarget
#endif //__OS2DNDH__
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