Visual C++ and MFC Programming 2nd Edition

Chapter 18: Progress-Based Controls Visual C++ and MFC Fundamentals

SetIcon(m_hIcon, FALSE); // Set small icon

// TODO: Add extra initialization here

CompTime = GetTickCount();

SetTimer(1, 100, NULL);

return TRUE; // return TRUE unless you set the focus to a control

}

11. Generate the WM_TIMER message for the dialog class and implement it as
    follows:

void CTickCounterDlg::OnTimer(UINT nIDEvent)

{

// TODO: Add your message handler code here and/or call default

unsigned long CurTickValue = GetTickCount();

unsigned int Difference = CurTickValue - CompTime;

m_CompTime.Format("This computer has been ON for %d", CurTickValue);

m_AppTime.Format("This application has been running for %d", Difference);

UpdateData(FALSE);

CDialog::OnTimer(nIDEvent);

}

12. Test the application


13. After testing the application, close it and return to MSVC


14. To make the values easier to read, change the code of the OnTimer event as follows:

void CTickCounterDlg::OnTimer(UINT nIDEvent)

{

// TODO: Add your message handler code here and/or call default

unsigned long CurTickValue = GetTickCount();

unsigned int Difference = CurTickValue - CompTime;

unsigned int ComputerHours, ComputerMinutes, ComputerSeconds;

unsigned int ApplicationHours, ApplicationMinutes, ApplicationSeconds;

ComputerHours = (CurTickValue / (3600 * 999)) % 24;

ComputerMinutes = (CurTickValue / (60 * 999)) % 60;

ComputerSeconds = (CurTickValue / 999) % 60;

ApplicationHours = (Difference / (3600 * 999)) % 24;

ApplicationMinutes = (Difference / (60 * 999)) % 60;

ApplicationSeconds = (Difference / 999) % 60;

m_CompTime.Format("This computer has been ON for %d hours, %d minutes

%d seconds", ComputerHours, ComputerMinutes, ComputerSeconds);

m_AppTime.Format("This application has been running for %d hours, %d

minutes %d seconds", ApplicationHours, ApplicationMinutes, ApplicationSeconds);

UpdateData(FALSE);