volumeapi.hpp

一个WinCE6。0下的IP phone的源代码

//
// Copyright (c) Microsoft Corporation.  All rights reserved.
//
//
// Use of this sample source code is subject to the terms of the Microsoft
// license agreement under which you licensed this sample source code. If
// you did not accept the terms of the license agreement, you are not
// authorized to use this sample source code. For the terms of the license,
// please see the license agreement between you and Microsoft or, if applicable,
// see the LICENSE.RTF on your install media or the root of your tools installation.
// THE SAMPLE SOURCE CODE IS PROVIDED "AS IS", WITH NO WARRANTIES.
//
#pragma once

#ifndef __VOLUMEAPI_HPP__ 
#define __VOLUMEAPI_HPP__

#include <windows.h>
#include "SettingsApi.hpp"

/*------------------------------------------------------------------------------
    GetVolumeIfApplicable
    
    get the current volume for given device type
    
    Parameters:
        Type: [IN] indicate which device type we are querying
        pVolume: [OUT] pointer to the output buffer which holds the volume

    returns: 
        HRESULT -- indicates whether it is successful or failed
------------------------------------------------------------------------------*/
extern
HRESULT
GetLiveVolumeIfApplicable(
    PHSetting   Type, 
    DWORD*      pVolume
    );

/*------------------------------------------------------------------------------
    SetVolumeIfApplicable
    
    set the current volume for given device type
    
    Parameters:
        Type:   [IN] indicate which device type we are setting
        Value:  [IN] the volume value

    returns:
        HRESULT -- indicates whether it is successful or failed
------------------------------------------------------------------------------*/
extern
HRESULT
SetLiveVolumeIfApplicable(
    PHSetting   Type,
    DWORD       Value
    );

#endif // !defined _VOLUMEAPI_HPP_