pszName (PSZ) - input

A pointer to the ASCIIZ name of the semaphore to open.

If the semaphore is either a private or shared unnamed muxwait semaphore, this field must be null and the semaphore is identified by the pointer to the muxwait-semaphore handle (phmux).

If the semaphore is a shared named semaphore, this field is no null and phmux must be set to 0. (Private semaphores are always unnamed).