symbian_pref.h

著名的 helix realplayer 基于手机 symbian 系统的 播放器全套源代码

/* ***** BEGIN LICENSE BLOCK ***** 
 * Version: RCSL 1.0/RPSL 1.0 
 *  
 * Portions Copyright (c) 1995-2002 RealNetworks, Inc. All Rights Reserved. 
 *      
 * The contents of this file, and the files included with this file, are 
 * subject to the current version of the RealNetworks Public Source License 
 * Version 1.0 (the "RPSL") available at 
 * http://www.helixcommunity.org/content/rpsl unless you have licensed 
 * the file under the RealNetworks Community Source License Version 1.0 
 * (the "RCSL") available at http://www.helixcommunity.org/content/rcsl, 
 * in which case the RCSL will apply. You may also obtain the license terms 
 * directly from RealNetworks.  You may not use this file except in 
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 * applicable to this file, the RCSL.  Please see the applicable RPSL or 
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 * contents of the file.  
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 * This file is part of the Helix DNA Technology. RealNetworks is the 
 * developer of the Original Code and owns the copyrights in the portions 
 * it created. 
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 * This file, and the files included with this file, is distributed and made 
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 * ***** END LICENSE BLOCK ***** */ 

#ifndef _SYMBIAN_PREF
#define _SYMBIAN_PREF

#include "pref.h"
#include <stdio.h>

struct IHXBuffer;
class CHXSimpleList;
class CHXMapStringToOb;

class CSymbianPref : public CPref 
{
  public:
    /* call open_pref() to automatically create the correct 
       specific preference object. */

    /* automatically reads all prefs into memory. */
    static  CSymbianPref* open_pref (const char* pCompanyName,
                                     const char* pProductName,
                                     int nProdMajorVer,
                                     int nProdMinorVer
                                     );
        
    /* class destructor - writes prefs to disk. */  
    virtual ~CSymbianPref(void);

    /* read_pref reads the preference specified by Key to the Buffer. */   
    virtual HX_RESULT read_pref(const char* pPrefKey, IHXBuffer*& pBuffer);

    /*  write_pref writes (to memory) the preference specified by Key from the 
        Buffer. */ 
    virtual HX_RESULT write_pref(const char* pPrefKey, IHXBuffer* pBuffer);

    /*  delete_pref deletes the preference specified by Key from the Buffer. */
    virtual HX_RESULT delete_pref(const char* pPrefKey); 

    /* commit_prefs saves all changes to the prefs to disk (e.g. on Symbian) */ 
    virtual HX_RESULT commit_prefs();

    virtual HX_RESULT init_pref(const char* pCompanyName,
                                const char* pProductName,
                                int nProdMajorVer,
                                int nProdMinorVer);

    /*  remove_indexed_pref removes indexed preference specified by Key */       
    HX_RESULT remove_indexed_pref(const char* pPrefKey); 
    virtual HX_RESULT remove_pref(const char* pPrefKey);

    HX_RESULT BeginSubPref(const char* szSubPref);
    HX_RESULT EndSubPref();

    HX_RESULT GetPrefKey(UINT32 nIndex,IHXBuffer*& pBuffer);

  protected:
        
    // Constructor NOTE: use open_pref() to create an instance of this class
    CSymbianPref( const char* pCompanyName,
                  const char* pProductName,
                  int nProdMajorVer,
                  int nProdMinorVer);

};

#endif // _SYMBIAN_PREF