MFC信号量使用指南

DEMO程序：TestSemaphore_DEMO.rar

源代码：TestSemaphore_SRC.rar

---关键代码如下---

void CTestSemaphoreDlg::OnBnClickedButtonThread1()

{

    // TODO: 在此添加控件通知处理程序代码

    AfxBeginThread((AFX_THREADPROC)thread1WriteA, this);

}





void CTestSemaphoreDlg::OnBnClickedButtonThread2()

{

    // TODO: 在此添加控件通知处理程序代码

    AfxBeginThread((AFX_THREADPROC)thread2WriteB, this);

}





void CTestSemaphoreDlg::OnBnClickedButtonThread3()

{

    // TODO: 在此添加控件通知处理程序代码

    AfxBeginThread((AFX_THREADPROC)thread3WriteC, this);

}



UINT CTestSemaphoreDlg::thread1WriteA( LPVOID pParam )

{

    CTestSemaphoreDlg* pThis = (CTestSemaphoreDlg*)pParam;

    pThis->WriteA();

    return 0;

}



void CTestSemaphoreDlg::WriteA()

{

    CString str;

    g_semaphore.Lock();

    for (int i=0; i<5; i++)

    {

        Sleep(500);

        m_editDisp.GetWindowText(str);

        str += "A";

        m_editDisp.SetWindowText(str);        

    }

    g_semaphore.Unlock();

}



UINT CTestSemaphoreDlg::thread2WriteB( LPVOID pParam )

{

    CTestSemaphoreDlg* pThis = (CTestSemaphoreDlg*)pParam;

    pThis->WriteB();

    return 0;

}



void CTestSemaphoreDlg::WriteB()

{

    CString str;

    g_semaphore.Lock();

    for (int i=0; i<5; i++)

    {

        Sleep(500);

        m_editDisp.GetWindowText(str);

        str += "B";

        m_editDisp.SetWindowText(str);        

    }

    g_semaphore.Unlock();

}



UINT CTestSemaphoreDlg::thread3WriteC( LPVOID pParam )

{

    CTestSemaphoreDlg* pThis = (CTestSemaphoreDlg*)pParam;

    pThis->WriteC();

    return 0;

}



void CTestSemaphoreDlg::WriteC()

{

    CString str;

    g_semaphore.Lock();

    for (int i=0; i<5; i++)

    {

        Sleep(500);

        m_editDisp.GetWindowText(str);

        str += "C";

        m_editDisp.SetWindowText(str);        

    }

    g_semaphore.Unlock();

}

 

通过本教程可以迅速学会使用MFC中信号量的运用！