hev (HEV) - input

The handle of the event semaphore to query.

pulPostCt (PULONG) - output

A pointer to the semaphore's post count.

The post count is the number of times DosPostEventSem has been called since the last time the event semaphore was in the reset state.

ulrc (APIRET) - returns

Return Code.

DosQueryEventSem returns one of the following values:

• NO_ERROR 6
  ERROR_INVALID_HANDLE
  87
  ERROR_INVALID_PARAMETER
  For a full list of error codes, see Errors.