相关疑难解决方法(0)

我想终止或杀死提升线程.代码在这里:

DWORD WINAPI  StartFaceDetector(LPVOID temp)
{   
    int j=0;
    char **argv1;
    QApplication a(j,argv1);//add some thread here  
    gui::VisualControl w;
    t=&w;
    boost::thread u(&faceThread);       
    w.show();
    a.exec();
    // I Want to close u thread here.   
    return 0;   
}

我想在返回函数之前关闭该boost线程.提前致谢.