#include <afxwin.h>

#define ID_WORKER 1001

class CMyWnd : public CFrameWnd
{
private:
  CButton m_BWorker;
  CWinThread *m_pThread;
  bool m_bThread;
  friend  UINT WorkerThread(LPVOID arg);
public:
  CMyWnd()
  {
    
    CRect rt;
    rt.top = 10;
    rt.left = 150;
    rt.right = 250;
    rt.bottom = 30;
    Create(NULL, _T("MFC Worker Thread"));
    m_BWorker.Create("Worker", WS_CHILD|WS_VISIBLE, rt, this, ID_WORKER);
    m_pThread = NULL;
    m_bThread = TRUE;
  }

  afx_msg void OnWorker();

  DECLARE_MESSAGE_MAP()
};
BEGIN_MESSAGE_MAP(CMyWnd, CFrameWnd)
ON_COMMAND(ID_WORKER, OnWorker)
END_MESSAGE_MAP()

UINT WorkerThread(LPVOID arg)
{
   SYSTEMTIME st;
   CMyWnd * pWnd;
   CMyWnd *pWnd = (CMyWnd *)arg;
   while(pWnd->m_bThread){
   GetSystemTime(&st);
   CString tm;
   tm.Format("Time %.2d:%.2d:%.2d Date %.2d/%.2d/%.4d",
             st.wHour, st.wMinute, st.wSecond, st.wDay, st.wMonth, st.wYear);
   pWnd->SetWindowText((LPCTSTR)tm);
   Sleep(500);
   }
   AfxEndThread(0, TRUE);
   return 0;
}
afx_msg void CMyWnd::OnWorker()
{
  if(!m_pThread) {
    m_bThread = TRUE;
    m_pThread = AfxBeginThread(WorkerThread,this,THREAD_PRIORITY_NORMAL,0,0,NULL);
  } else {
    m_bThread = FALSE;
    m_pThread = NULL;
  }
}

class CMyApp : public  CWinApp 
{

public:
  virtual BOOL InitInstance()
  {

    m_pMainWnd = new CMyWnd();
    m_pMainWnd->ShowWindow(SW_SHOW);
    m_pMainWnd->UpdateWindow();

       return TRUE;
  }
 };



 CMyApp app;

MFC Worker Thread Demo

About our authors: Team EQA

Further readings

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