win32_dragdrop.hpp

来自「uclinux 下的vlc播放器源代码」· HPP 代码 · 共 65 行

/*****************************************************************************
 * win32_dragdrop.hpp
 *****************************************************************************
 * Copyright (C) 2003 the VideoLAN team
 * $Id: win32_dragdrop.hpp 14118 2006-02-01 18:06:48Z courmisch $
 *
 * Authors: Cyril Deguet     <[e-mail]>
 *          Olivier Teulière <[e-mail]>
 *
 * 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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
 *****************************************************************************/

#ifndef WIN32_DRAGDROP_HPP
#define WIN32_DRAGDROP_HPP

#include <shellapi.h>
#include <ole2.h>
#include "../src/skin_common.hpp"


class Win32DragDrop: public SkinObject, public IDropTarget
{
    public:
       Win32DragDrop( intf_thread_t *pIntf, bool playOnDrop );
       virtual ~Win32DragDrop() {}

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

        // IDropTarget methods
        STDMETHOD(DragEnter)( LPDATAOBJECT pDataObj, DWORD grfKeyState,
                              POINTL pt, DWORD *pdwEffect );
        STDMETHOD(DragOver)( DWORD grfKeyState, POINTL pt, DWORD *pdwEffect );
        STDMETHOD(DragLeave)();
        STDMETHOD(Drop)( LPDATAOBJECT pDataObj, DWORD grfKeyState,
                         POINTL pt, DWORD *pdwEffect );

    private:
        /// Internal reference counter
        unsigned long m_references;
        /// Indicates whether the file(s) must be played immediately
        bool m_playOnDrop;

        /// Helper function
        void HandleDrop( HDROP HDrop );
};


#endif