20201027:
The below should be defined simply as "on the windows thread problem".
1. the source code were compiled well.
1-1. which means library "mmsystem.h" attached.
2. the created execution-file doesn't work.
on the windows thread problem 001( reffered to [1] ):
on the windows thread problem 002( reffered to [2] ):
[1] on windows server 200: https://docs.microsoft.com/en-us/previous-versions//dd757160(v=vs.85)
[2]
