Port information structure (level 1).

typedef struct _PRPORTINFO1 {
  PSZ     pszPortName;            /*  Name of the port. */
  PSZ     pszPortDriverName;      /*  Name of the port driver. */
  PSZ     pszPortDriverPathName;  /*  Full path name of the port driver. */
} PRPORTINFO1;

typedef   PRPORTINFO1   * PPRPORTINFO1 ;