vc++ 下的WaitForSingleObject

#include <process.h>
#include <windows.h>
#include <iostream>

using namespace std;

//WaitForSingleObject 检测对象是否有信号。可以配合event使用，或直接检测对象。
//如果Object被激活了，或者正在使用，那么该Object就是无信号，也就是不可用；另一方面，如果Object可用了，那么它就恢复有信号了
//如果要检测正在使用，那么等待时间为0就好。会返回WAIT_TIMEOUT。
//如果要检测是否停止，那么稍微加点时间。会返回WAIT_OBJECT_0

//1.线程 正常返回.
//2.等待一点点时间.
//3.WaitForSingleObject只有返回obj,说明成功.

//4.那么就关闭handle,并设置handle为null.

bool runing=true;
HANDLE m_hThreadHandle = NULL;

unsigned __stdcall ThreadFunction(LPVOID pThreadData)
{
    while(runing)
    {
        Sleep(500);
        cout<<"running"<<endl;
    }
    return 0;
}

unsigned __stdcall CheckThreadFunction(LPVOID pThreadData)
{
    while(true)
    {
        Sleep(1000);
        DWORD dw = WaitForSingleObject(m_hThreadHandle, 10);
        if (dw==WAIT_TIMEOUT)
        {
            cout<<"wait"<<endl;
        }
        else if(dw==WAIT_OBJECT_0)
        {
            cout<<"obj"<<endl;
        }
        else if(WAIT_FAILED==dw)
        {
            cout<<"fall"<<dw<<endl;
        }
        else
        {
            cout<<"other:"<<dw<<endl;
        }
    }
    return 0;
}


//检测线程是否在运行。
int main()
{
    //LSU_HELPER::CThread mythread(myloop);
    //mythread.StartThread();
    //Sleep(5000);
    //mythread.StopThread();
    //Sleep(1000);//等待线程退出，

    m_hThreadHandle=(HANDLE)_beginthreadex(NULL,0,ThreadFunction,NULL,0,NULL);//

    HANDLE m_hThreadHandlecc=NULL;
    m_hThreadHandlecc=(HANDLE)_beginthreadex(NULL,0,CheckThreadFunction,NULL,0,NULL);//

    Sleep(5000);
    runing=false;
    Sleep(5000);

    return 0;
}