capturefile-header-values.md

description	ms.assetid	title	ms.topic	ms.date	topic_type	api_name	api_type	api_location
Defines the Network Monitor header file structure.	944980c9-ebaa-4042-a112-d32b7a28ba21	CAPTUREFILE_HEADER_VALUES structure (Netmon.h)	reference	05/31/2018	APIRef kbSyntax	CAPTUREFILE_HEADER_VALUES	HeaderDef	Netmon.h

CAPTUREFILE_HEADER_VALUES structure

The CAPTUREFILE_HEADER_VALUES structure defines the Network Monitor header file structure.

Syntax

typedef struct _CAPTUREFILE_HEADER_VALUES {
  DWORD      Signature;
  BYTE       BCDVerMinor;
  BYTE       BCDVerMajor;
  WORD       MacType;
  SYSTEMTIME TimeStamp;
  DWORD      FrameTableOffset;
  DWORD      FrameTableLength;
  DWORD      UserDataOffset;
  DWORD      UserDataLength;
  DWORD      CommentDataOffset;
  DWORD      CommentDataLength;
  DWORD      StatisticsOffset;
  DWORD      StatisticsLength;
  DWORD      NetworkInfoOffset;
  DWORD      NetworkInfoLength;
  DWORD      ConversationStatsOffset;
  DWORD      ConversationStatsLength;
} CAPTUREFILE_HEADER_VALUES, *LPCAPTUREFILE_HEADER_VALUES;

Members

Signature

Unique identifier: 'GMBU.

BCDVerMinor

Binary, coded decimal (minor). The value of this member should be zero (0).

BCDVerMajor

Binary coded decimal (major). This value should be 2.

MacType

Topology type.

TimeStamp

Time of capture.

FrameTableOffset

Frame index table.

FrameTableLength

Frame index table size.

UserDataOffset

User data offset.

UserDataLength

User data length.

CommentDataOffset

Comment data offset.

CommentDataLength

Length of comment data.

StatisticsOffset

Offset to the STATISTICS structure.

StatisticsLength

Length of the STATISTICS structure.

NetworkInfoOffset

Offset to the NETWORKINFO structure.

NetworkInfoLength

Length of the NETWORKINFO structure.

ConversationStatsOffset

This member is not used.

ConversationStatsLength

This member is not used.

Requirements

Requirement	Value
Minimum supported client	Windows 2000 Professional [desktop apps only]
Minimum supported server	Windows 2000 Server [desktop apps only]
Header	Netmon.h