C / C++ / MFC

MFC Timer Code.<br />
<br />
// Declarations<br />
#define ELAPSED_TIMER 101<br />
time_t lStopTime;<br />
time_t lStartTime;<br />
CTimeSpan cteElapsedTime;

<br />
//Start Timer<br />
time(&lStartTime);<br />
SetTimer(s->m_hWnd,ELAPSED_TIMER, 1000, NULL);<br />

<br />
//Kill Timer<br />
KillTimer(s->m_hWnd, ELAPSED_TIMER);

<br />
//Timer Function<br />
void CSDlg::OnTimer(UINT nIDEvent) <br />
{<br />
	if(nIDEvent == ELAPSED_TIMER)<br />
	{<br />
		time(&lStopTime);<br />
		cteElapsedTime = CTimeSpan(lStopTime-lStartTime); <br />
		CString csElapsedTime;<br />
		csElapsedTime.Format("%02d:%02d:%02d", <br />
		cteElapsedTime.GetHours(),<br />
		cteElapsedTime.GetMinutes(),<br />
		cteElapsedTime.GetSeconds());<br />
		if(IsWindowVisible())<br />
		{<br />
			m_TIME.SetWindowText(csElapsedTime);<br />
		}<br />
	}	<br />
		CDialog::OnTimer(nIDEvent);<br />
}

<br />
<br />
int APIENTRY WinMain(HINSTANCE hInstance,<br />
                     HINSTANCE hPrevInstance,<br />
                     LPSTR     lpCmdLine,<br />
                     int       nCmdShow)<br />
{<br />
 	// TODO: Place code here.<br />
	INT_PTR mRet = DialogBox(hInstance, <br />
                            MAKEINTRESOURCE(IDD_MAIN),<br />
                            GetDesktopWindow(),<br />
                            MainDlgProc);<br />
	return 0;<br />
} <br />
<br />
<br />
BOOL CALLBACK MainDlgProc(HWND hwnd, UINT Message, WPARAM wParam, LPARAM lParam)<br />
{<br />
	<br />
	switch(Message)<br />
	{<br />
<br />
		case WM_INITDIALOG:<br />
		{<br />
			SetTimer(hwnd,IDT_TIMER, 1000,(TIMERPROC) NULL);   <br />
		}<br />
			break;<br />
		<br />
		<br />
		case WM_CLOSE:<br />
			EndDialog(hwnd, 0);<br />
		break;<br />
<br />
		case WM_COMMAND:<br />
<br />
			switch(LOWORD(wParam))<br />
			{<br />
			    case IDC_EXIT:<br />
				     EndDialog(hwnd, 0);<br />
			   	     break;     <br />
					 <br />
				case IDC_Start:<br />
				//Starts the timer on button click<br />
<br />
					break;<br />
				<br />
                                 case IDC_End:<br />
                                 //Ends the timer on button click<br />
				  KillTimer(hwnd, IDT_TIMER);<br />
      				  break;<br />
			}<br />
			default:<br />
			return FALSE;<br />
	}<br />
	return TRUE;<br />
}