DMIDATA

typedef struct _DMIDATA {
  ULONG         packet_size;
  ULONG         packet_revision_number;
  PVOID         DMI_product_ID;
  PVOID         DMI_modification_level;
  PVOID         DMI_fix_level;
  ULONG         template_filename_length;
  PVOID         template_filename;
} DMIDATA;

typedef   DMIDATA   * PDMIDATA ;

Use appropriate packet_revision_number to indicate whether character data in the parameter packet is in UniCode or ASCII format .