Adds a new item to the container.
PRL_RESULT PrlOpTypeList_AddItem( PRL_HANDLE hOpTypeList, PRL_CONST_VOID_PTR pnItem );
PrlApiCore.h
PRL_RESULT. Possible values:
PRL_ERR_INVALID_ARG - invalid handle or null pointer to value variable was passed.
PRL_ERR_SUCCESS - function completed successfully.