标签：输出设备 PCWSTR HRESULT STDMETHODCALLTYPE C++ interface SetDefaultAudioPlaybackDevic
需要PolicyConfig.h头文件
// ----------------------------------------------------------------------------
// PolicyConfig.h
// Undocumented COM-interface IPolicyConfig.
// Use for set default audio render endpoint
// @author EreTIk
// ----------------------------------------------------------------------------
#pragma once
#include <mmeapi.h>
interface DECLSPEC_UUID("f8679f50-850a-41cf-9c72-430f290290c8")
IPolicyConfig;
class DECLSPEC_UUID("870af99c-171d-4f9e-af0d-e63df40c2bc9")
CPolicyConfigClient;
// ----------------------------------------------------------------------------
// class CPolicyConfigClient
// {870af99c-171d-4f9e-af0d-e63df40c2bc9}
//
// interface IPolicyConfig
// {f8679f50-850a-41cf-9c72-430f290290c8}
//
// Query interface:
// CComPtr<IPolicyConfig> PolicyConfig;
// PolicyConfig.CoCreateInstance(__uuidof(CPolicyConfigClient));
//
// @compatible: Windows 7 and Later
// ----------------------------------------------------------------------------
interface IPolicyConfig : public IUnknown
{
public:
virtual HRESULT GetMixFormat(
PCWSTR,
WAVEFORMATEX **
);
virtual HRESULT STDMETHODCALLTYPE GetDeviceFormat(
PCWSTR,
INT,
WAVEFORMATEX **
);
virtual HRESULT STDMETHODCALLTYPE ResetDeviceFormat(
PCWSTR
);
virtual HRESULT STDMETHODCALLTYPE SetDeviceFormat(
PCWSTR,
WAVEFORMATEX *,
WAVEFORMATEX *
);
virtual HRESULT STDMETHODCALLTYPE GetProcessingPeriod(
PCWSTR,
INT,
PINT64,
PINT64
);
virtual HRESULT STDMETHODCALLTYPE SetProcessingPeriod(
PCWSTR,
PINT64
);
virtual HRESULT STDMETHODCALLTYPE GetShareMode(
PCWSTR,
struct DeviceShareMode *
);
virtual HRESULT STDMETHODCALLTYPE SetShareMode(
PCWSTR,
struct DeviceShareMode *
);
virtual HRESULT STDMETHODCALLTYPE GetPropertyValue(
PCWSTR,
const PROPERTYKEY &,
PROPVARIANT *
);
virtual HRESULT STDMETHODCALLTYPE SetPropertyValue(
PCWSTR,
const PROPERTYKEY &,
PROPVARIANT *
);
virtual HRESULT STDMETHODCALLTYPE SetDefaultEndpoint(
__in PCWSTR wszDeviceId,
__in ERole eRole
);
virtual HRESULT STDMETHODCALLTYPE SetEndpointVisibility(
PCWSTR,
INT
);
};
interface DECLSPEC_UUID("568b9108-44bf-40b4-9006-86afe5b5a620")
IPolicyConfigVista;
class DECLSPEC_UUID("294935CE-F637-4E7C-A41B-AB255460B862")
CPolicyConfigVistaClient;
// ----------------------------------------------------------------------------
// class CPolicyConfigVistaClient
// {294935CE-F637-4E7C-A41B-AB255460B862}
//
// interface IPolicyConfigVista
// {568b9108-44bf-40b4-9006-86afe5b5a620}
//
// Query interface:
// CComPtr<IPolicyConfigVista> PolicyConfig;
// PolicyConfig.CoCreateInstance(__uuidof(CPolicyConfigVistaClient));
//
// @compatible: Windows Vista and Later
// ----------------------------------------------------------------------------
interface IPolicyConfigVista : public IUnknown
{
public:
virtual HRESULT GetMixFormat(
PCWSTR,
WAVEFORMATEX **
); // not available on Windows 7, use method from IPolicyConfig
virtual HRESULT STDMETHODCALLTYPE GetDeviceFormat(
PCWSTR,
INT,
WAVEFORMATEX **
);
virtual HRESULT STDMETHODCALLTYPE SetDeviceFormat(
PCWSTR,
WAVEFORMATEX *,
WAVEFORMATEX *
);
virtual HRESULT STDMETHODCALLTYPE GetProcessingPeriod(
PCWSTR,
INT,
PINT64,
PINT64
); // not available on Windows 7, use method from IPolicyConfig
virtual HRESULT STDMETHODCALLTYPE SetProcessingPeriod(
PCWSTR,
PINT64
); // not available on Windows 7, use method from IPolicyConfig
virtual HRESULT STDMETHODCALLTYPE GetShareMode(
PCWSTR,
struct DeviceShareMode *
); // not available on Windows 7, use method from IPolicyConfig
virtual HRESULT STDMETHODCALLTYPE SetShareMode(
PCWSTR,
struct DeviceShareMode *
); // not available on Windows 7, use method from IPolicyConfig
virtual HRESULT STDMETHODCALLTYPE GetPropertyValue(
PCWSTR,
const PROPERTYKEY &,
PROPVARIANT *
);
virtual HRESULT STDMETHODCALLTYPE SetPropertyValue(
PCWSTR,
const PROPERTYKEY &,
PROPVARIANT *
);
virtual HRESULT STDMETHODCALLTYPE SetDefaultEndpoint(
__in PCWSTR wszDeviceId,
__in ERole eRole
);
virtual HRESULT STDMETHODCALLTYPE SetEndpointVisibility(
PCWSTR,
INT
); // not available on Windows 7, use method from IPolicyConfig
};
主程序调用使用部分：
#include <iostream>
#include<Windows.h>
#include "Mmdeviceapi.h"
#include "PolicyConfig.h"
using namespace std;
HRESULT SetDefaultAudioPlaybackDevice(LPCWSTR devID)
{
HRESULT hr = CoInitializeEx(NULL, COINIT_APARTMENTTHREADED);
IPolicyConfigVista* pPolicyConfig;
ERole reserved = eConsole;
hr = CoCreateInstance(__uuidof(CPolicyConfigVistaClient),
NULL, CLSCTX_ALL, __uuidof(IPolicyConfigVista), (LPVOID*)&pPolicyConfig);
if (SUCCEEDED(hr))
{
hr = pPolicyConfig->SetDefaultEndpoint(devID, reserved);
pPolicyConfig->Release();
}
return hr;
}
int main()
{
auto a = L"{0.0.0.00000000}.{863f782c-0d61-47a2-9fe6-15ae008c5e8d}"; //声音设备的ID
auto b = L"{0.0.0.00000000}.{b5b7d6a2-984e-46ad-bc8f-f49ee617c26a}"; //声音设备的ID
HRESULT hr = SetDefaultAudioPlaybackDevice(a); //设置默认声音输出设备
if (SUCCEEDED(hr))
{
cout << "设置成功" << endl;
}
else
{
cout << "设置失败" << endl;
}
cout << "退出了" << endl;
getchar();
}
标签：输出设备,PCWSTR,HRESULT,STDMETHODCALLTYPE,C++,interface,SetDefaultAudioPlaybackDevic 来源： https://www.cnblogs.com/zzr-stdio/p/16289725.html
本站声明： 1. iCode9 技术分享网（下文简称本站）提供的所有内容，仅供技术学习、探讨和分享； 2. 关于本站的所有留言、评论、转载及引用，纯属内容发起人的个人观点，与本站观点和立场无关； 3. 关于本站的所有言论和文字，纯属内容发起人的个人观点，与本站观点和立场无关； 4. 本站文章均是网友提供，不完全保证技术分享内容的完整性、准确性、时效性、风险性和版权归属；如您发现该文章侵犯了您的权益，可联系我们第一时间进行删除； 5. 本站为非盈利性的个人网站，所有内容不会用来进行牟利，也不会利用任何形式的广告来间接获益，纯粹是为了广大技术爱好者提供技术内容和技术思想的分享性交流网站。