How do I set the windows system clock to the right local time using C++?

Question

Right now I do something like this:

    SYSTEMTIME st;

    st.wHour = 6;
    st.wMinute = 23;

    BOOL result = SetSystemTime(&st);

The goal is to get it to show that exact time on my local machine. When I run the program it changes it to 8:23 instead of 6:23. How can I get it to show the correct local time?

Answer 1

SetSystemTime() expects the provided time to be in UTC. If you want to set the time using the local time, use SetLocalTime().