Returns the event parameter value as PRL_INT32 .
PRL_RESULT PrlEvtPrm_ToInt32( PRL_HANDLE hEventParam, PRL_INT32_PTR pnParamValue );
PrlApiCore.h
PRL_RESULT . Possible values:
PRL_ERR_INVALID_ARG - invalid handle or null pointer was passed.
PRL_ERR_SUCCESS - function completed successfully.