dropsource.h

FreeAMP(MP3播放)程序源代码-用来研究MP3解码

/*____________________________________________________________________________

        FreeAmp - The Free MP3 Player

        Portions Copyright (C) 1999 EMusic.com

        This program is free software; you can redistribute it and/or modify
        it under the terms of the GNU General Public License as published by
        the Free Software Foundation; either version 2 of the License, or
        (at your option) any later version.

        This program is distributed in the hope that it will be useful,
        but WITHOUT ANY WARRANTY; without even the implied warranty of
        MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        GNU General Public License for more details.

        You should have received a copy of the GNU General Public License
        along with this program; if not, write to the Free Software
        Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

        $Id: DropSource.h,v 1.2 1999/11/14 17:57:11 elrod Exp $
____________________________________________________________________________*/

#ifndef INCLUDED_DROPSOURCE_H_
#define INCLUDED_DROPSOURCE_H_

class FAR DropSource : public IDropSource
{
 public:    
    DropSource(HWND hwndSrc, HIMAGELIST himl, POINT hotspot, POINT dragPt);
	~DropSource();

    /* IUnknown methods */
    STDMETHOD(QueryInterface)(REFIID riid, void FAR* FAR* ppvObj);
    STDMETHOD_(ULONG, AddRef)(void);
    STDMETHOD_(ULONG, Release)(void);

    /* IDropSource methods */
    STDMETHOD(QueryContinueDrag)(BOOL fEscapePressed, DWORD grfKeyState);
    STDMETHOD(GiveFeedback)(DWORD dwEffect);
 
 private:
    ULONG		m_refs;
	HWND		m_hwnd;
	ULONG		m_ncyoffset;
	ULONG		m_ncxoffset;
};

#endif // INCLUDED_DROPSOURCE_H_