MFC統計耗時

LARGE_INTEGER liFrequency, liStart, liEnd;
::QueryPerformanceFrequency(&liFrequency);       // 獲取機器頻率
::QueryPerformanceCounter(&liStart);

代碼

::QueryPerformanceCounter(&liEnd);
LONGLONG llTime = (liEnd.QuadPart - liStart.QuadPart) * 1000 / liFrequency.QuadPart;

// 輸出執行時間
CString csStr1, csStr2;
csStr1 = "time(ms): ";
csStr2.Format("%d",llTime);
csStr1 += csStr2;
::AfxMessageBox(csStr1);