现有音频文件wav格式一个，该文件播放时长为1分钟20秒；

情景：当条件满足时自动触发该音频自动播放，一次播放完成后若没有人工置条件使其关闭则自动启动第二次播放，依次类推直到人工关闭该次播放；

问题：现阶段该音频文件能够播放，也能够人工操作使其停止播放，但是有一个问题，我的程序运行周期为一秒，用当前逻辑是每一个周期都会切断正在播放的，重新开始播放，导致声音一直在播放第一秒内容，代码如下：

    CString str = "";
    if (SQddlFlag == TRUE)   //判断当前需要播放音频
    {
        if()    //我的设想是此时如果判断该音频文件正在播放过程中，本次播放未完时，就不在执行以下语句块
        {
            str.Format("%s\\wave\\DL.wav", GetRoot());        //GetRoot()为该音频文件所在文件根目录动态定位
            PlaySound(str, NULL, SND_FILENAME | SND_ASYNC | SND_LOOP | SND_NOWAIT);
        }
    }
    else
    {
        PlaySound(NULL, NULL, SND_FILENAME);    //停止该音频播放
    }  

已解决，将PlaySound()函数参数列表改为如下即可解决，不需单独添加if条件：

PlaySound(str, NULL, SND_NOSTOP | SND_FILENAME | SND_ASYNC | SND_LOOP);

另如需播放多个不同音频，可使用线程播放：

CEvent PlayDLBegin;
CEvent PlayDLEnd;
CEvent PlayDLPause;
CEvent PlayDLResume;
extern UINT PlayDLSound(LPVOID pParam);

UINT PlayDLSound(LPVOID pParam)
{
    LPCTSTR lpres = (LPCTSTR)pParam;
    static BOOL isReEntry = TRUE;
    if (!isReEntry)
        return 0;
    isReEntry = FALSE;
    ::WaitForSingleObject(PlayDLBegin.m_hObject, INFINITE);

    HINSTANCE h = AfxGetInstanceHandle();
    HRSRC hr = FindResource(h, lpres, "WAVE");
    HGLOBAL hg = LoadResource(h, hr);
    LPSTR lp = (LPSTR)LockResource(hg);
    BOOL KeepRunning = TRUE;
    BOOL Playing = TRUE;
    isReEntry = FALSE;
    while (KeepRunning)
    {
        int Pause = ::WaitForSingleObject(PlayDLPause.m_hObject, 0);
        if (Pause == WAIT_OBJECT_0)
            Playing = FALSE;
        int start = ::WaitForSingleObject(PlayDLResume.m_hObject, 0);
        if (start == WAIT_OBJECT_0)
            Playing = TRUE;
        for (int j = 0; j<2; j++)
        {
            if (Playing)
                sndPlaySound(lp, SND_MEMORY | SND_SYNC);
            Sleep(1000);
        }
        KeepRunning = false;
    }
    isReEntry = TRUE;
    FreeResource(hg);
    return 0;
}

AfxBeginThread(PlayDLSound, (LPVOID)str, THREAD_PRIORITY_NORMAL);
PlayDLBegin.SetEvent();

PlayDLEnd.SetEvent();

PlayDLPause.SetEvent();

PlayDLResume.SetEvent();

[此贴子已经被作者于2020-11-18 15:25编辑过]