Tries to lock mutex. If mutex is already locked by another thread,
it immediately returns FALSE. Otherwise it locks mutex and returns
TRUE. If mutex is already locked by the calling thread, this
functions increases the depth of mutex and immediately returns
TRUE.
Tries to lock mutex. If mutex is already locked by another thread, it immediately returns FALSE. Otherwise it locks mutex and returns TRUE. If mutex is already locked by the calling thread, this functions increases the depth of mutex and immediately returns TRUE.