VC线程入门实例

1. 用MFC AppWizzard(exe) 创建一个project;

2. 在ClassView选项卡下,右键单击project的根目录,在弹出菜单中选择”new class”,然后弹出如下的列表框,在Name中填写CMyThread,Base class:选选择CwinThread,点击”OK”.

3. 线程创建完毕.

4. 为线程类和要调用线程类的类中分别添加3个事件信号

public:

HANDLE m_hStop;

HANDLE m_hStopped;

HANDLE m_hExit;

5. 重载线程类的构造函数,创建一个有3个参数的线程类的构造函数为public,如:

CMyThread (HANDLE hStop,HANDLE hStopped,HANDLE hExit);

6. 在要调用此线程类的类中初始化事件信号和线程,如:

m_hStop = CreateEvent(NULL,true,false,NULL);

m_hStopped = CreateEvent(NULL,true,false,NULL);

m_hExit = CreateEvent(NULL,true,false,NULL);

m_pThread = new CTestThread(m_hStop,m_hStopped,m_hExit);

7. 为线程类和要调用线程类的类中分别添加3个事件信号

public:

HANDLE m_hStop;

HANDLE m_hStopped;

HANDLE m_hExit;

8. 重写线程类的虚函数run();如:

int CMyThread::Run()

{

CString str;

for(int n=0;;n++)//一个死循环

{

DWORD dw = WaitForSingleObject(m_hStop,0);//等待停止信号

if(dw==WAIT_OBJECT_0)

break;

str.Format("%d",n);

m_pMainWnd->PostMessage(WM_TEST,(WPARAM)(str.operator LPCTSTR()),0);

Sleep(100);

}

SetEvent(m_hStopped);//付出关闭线程的信号

return CWinThread::Run();

}

9. 在需要调用此线程类的地方,声明线程类的指针,并调用CreateThread()如下所示:

CMyThread* pMyThread = new CMyThread();

pMyThread ->CreateThread();

10. 重写线程类的ExitInstance()函数,发出关闭信号事件,如:

int CTestThread::ExitInstance()

{

SetEvent(m_hExit);

return CWinThread::ExitInstance();

}

11.线程结束