71 lines
2.3 KiB
C
71 lines
2.3 KiB
C
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///////////////////////////////////////////////////////////////////////////////
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// Name: ole/dropsrc.h
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// Purpose: declaration of the wxDropSource class
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// Author: Vadim Zeitlin
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// Modified by:
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// Created: 06.03.98
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// RCS-ID: $Id$
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// Copyright: (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
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// Licence: wxWindows license
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///////////////////////////////////////////////////////////////////////////////
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#ifndef _OLEDROPSRC_H
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#define _OLEDROPSRC_H
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#ifdef __GNUG__
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#pragma interface
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#endif
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#if !USE_DRAG_AND_DROP
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#error "You should #define USE_DRAG_AND_DROP to 1 to compile this file!"
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#endif //WX_DRAG_DROP
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// ----------------------------------------------------------------------------
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// forward declarations
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// ----------------------------------------------------------------------------
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class wxIDropSource;
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class wxDataObject;
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// ----------------------------------------------------------------------------
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// wxDropSource is used to start the drag-&-drop operation on associated
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// wxDataObject object. It's responsible for giving UI feedback while dragging.
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// ----------------------------------------------------------------------------
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class wxDropSource
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{
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public:
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enum DragResult
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{
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Error, // error prevented the d&d operation from completing
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None, // drag target didn't accept the data
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Copy, // the data was successfully copied
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Move, // the data was successfully moved
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Cancel // the operation was cancelled by user (not an error)
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};
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// ctors: if you use default ctor you must call SetData() later!
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wxDropSource();
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wxDropSource(wxDataObject& data);
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void SetData(wxDataObject& data);
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virtual ~wxDropSource();
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// do it (call this in response to a mouse button press, for example)
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// params: if bAllowMove is false, data can be only copied
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DragResult DoDragDrop(bool bAllowMove = false);
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// overridable: you may give some custom UI feedback during d&d operation
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// in this function (it's called on each mouse move, so it shouldn't be too
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// slow). Just return false if you want default feedback.
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virtual bool GiveFeedback(DragResult effect, bool bScrolling);
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protected:
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void Init();
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wxDataObject *m_pData; // pointer to associated data object
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private:
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wxIDropSource *m_pIDropSource; // the pointer to COM interface
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};
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#endif //_OLEDROPSRC_H
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