相关疑难解决方法(0)

现在我已经安装了RC,我正在接受一些我在Windows 7 Beta中搞砸的实验代码.

基本上,我试图让IAudioSessionManager2与IAudioSessionNotification共同努力,告知我创建的每个新的音频会话的小应用程序.

AudioListener(公共IAudioSessionNotification)中的Punchline代码:

//This is mostly lifted from MSDN
HRESULT STDMETHODCALLTYPE AudioListener::QueryInterface(REFIID riid, void** ppvObject)
{
    if(riid == __uuidof(IUnknown))
    {
        *ppvObject = (IUnknown*)this;
        return S_OK;
    }

    if(riid == __uuidof(IAudioSessionNotification))
    {
        *ppvObject = (IAudioSessionNotification*)this;
        return S_OK;
    }

    *ppvObject = NULL;

    return E_NOINTERFACE;
}

//m_hwnd, and WM_SESSION_CREATED are set to good values
//WM_SESSION_CREATEd via RegisterWindowMessage(...)
HRESULT STDMETHODCALLTYPE AudioListener::OnSessionCreated(IAudioSessionControl *pSession)
{
    PostMessage(m_hwnd, WM_SESSION_CREATED, (WPARAM)pSession, 0);

    return S_OK;
}

代码注册我的听众:

BOOL RegisterMonitor(HWND target)
{
    BOOL …