Question

Is It possible get ticks number with same format like DateTime.Ticks .NET object, that is in 100ns units, in C++ ATL or MFC?

Answer 1

DateTime.Ticks does not have any implications on timer resolution, so you are not promised that timer is 100ns accurate. In C++ you have a similar value using:

ULONGLONG nTicks = GetTickCount() * 10000i64;

If you need a more accurate timer, look for QueryPerformanceCounter based implementation. See:

• How to use QueryPerformanceCounter?
• Fastest timing resolution system
• Can someone decipher whether timeGetTime() or QueryPerformanceCounter/QueryPerformanceFrequency has lower overhead or/and accuracy?

UPD. As for alignment to that from .NET Ticks property, see comment from Hans above – value casted/calculated from result of GetFileTime API is also in the same 100 ns units and is set off Ticks property by a fixed constant.