BYTE MCI_MSF_SECOND(dwMSF)
This macro returns the seconds field from a DWORD argument containing packed MSF (minutes, seconds, frames) information.
DWORD dwMSF
Specifies the time in MSF format.
The return value is the seconds field of the given argument.
Time in MSF format is expressed as a DWORD with the least significant byte containing minutes, the next least significant byte containing seconds, and the next least significant byte containing frames. The most significant byte is unused.
MCI_MSF_MINUTE, MCI_MSF_FRAME, MCI_MAKE_MSF