The GetTickCount function retrieves the number of milliseconds that have elapsed since Windows was started. DWORD GetTickCount(VOID) ParametersThis function has no parameters. Return ValuesIf the function succeeds, the return value is the number of milliseconds that have elapsed since Windows was started. ResThe elapsed time is stored as a DWORD value. Therefore, the time will wrap around to zero if Windows is run continuously for 49.7 days. Windows NT: To obtain the time elapsed since the computer was started, look up the System Up Time counter in the performance data in the registry key HKEY_PERFORMANCE_DATA. The value returned is an 8 byte value.
ParametersThis function has no parameters. Return ValuesIf the function succeeds, the return value is the number of milliseconds that have elapsed since Windows was started. ResThe elapsed time is stored as a DWORD value. Therefore, the time will wrap around to zero if Windows is run continuously for 49.7 days.
Windows NT: To obtain the time elapsed since the computer was started, look up the System Up Time counter in the performance data in the registry key HKEY_PERFORMANCE_DATA. The value returned is an 8 byte value.