Class DwgContainerHeader

Namespace

DwgIO.Model

Assembly

DwgIO.dll

The file header of an R2004-family drawing: the 0x6C-byte block at file offset 0x80 after decryption, plus the plaintext fields of the first 0x80 bytes.

public sealed class DwgContainerHeader

Inheritance

object

DwgContainerHeader

Inherited Members

object.Equals(object?)

object.Equals(object?, object?)

object.GetHashCode()

object.GetType()

object.ReferenceEquals(object?, object?)

object.ToString()

Properties

BackupHeaderOffset

Decrypted 0x34: offset of the backup copy of the header at the end of the file.

public required ulong BackupHeaderOffset { get; init; }

Property Value

ulong

FileHeader

The 128-byte prefix shared with other DWG releases.

public required DwgFileHeader FileHeader { get; init; }

Property Value

DwgFileHeader

FileId

Decrypted 0x00: the "AcFssFcAJMB" file-id string.

public required string FileId { get; init; }

Property Value

string

GapCount

Decrypted 0x3C: number of gaps in the page sequence.

public required uint GapCount { get; init; }

Property Value

uint

GapTableLength

Decrypted 0x64: length of the gap table.

public required uint GapTableLength { get; init; }

Property Value

uint

HeaderCrcValid

Whether the decrypted header block matches its stored CRC-32.

public required bool HeaderCrcValid { get; init; }

Property Value

bool

LastPageEndOffset

Decrypted 0x2C: file offset where the last page ends.

public required ulong LastPageEndOffset { get; init; }

Property Value

ulong

LastPageNumber

Decrypted 0x28: number of the last page.

public required uint LastPageNumber { get; init; }

Property Value

uint

PageCount

Decrypted 0x40: number of pages.

public required uint PageCount { get; init; }

Property Value

uint

PageMapOffset

Decrypted 0x54: page map offset (add 0x100 for the file offset).

public required ulong PageMapOffset { get; init; }

Property Value

ulong

PageMapPageNumber

Decrypted 0x50: page number of the page map.

public required uint PageMapPageNumber { get; init; }

Property Value

uint

PageTableLength

Decrypted 0x60: length of the page table.

public required uint PageTableLength { get; init; }

Property Value

uint

SectionMapPageNumber

Decrypted 0x5C: page number of the section map.

public required uint SectionMapPageNumber { get; init; }

Property Value

uint

SecurityFlags

Bytes 0x18-0x1B of the plaintext header.

public required uint SecurityFlags { get; init; }

Property Value

uint

StoredCrc32

Decrypted 0x68: CRC-32 stored over the block with its own 4 bytes zeroed.

public required uint StoredCrc32 { get; init; }

Property Value

uint

SummaryInfoOffset

Bytes 0x20-0x23: file offset of the summary info section.

public required uint SummaryInfoOffset { get; init; }

Property Value

uint

VbaProjectOffset

Bytes 0x24-0x27: file offset of the VBA project (0 if absent).

public required uint VbaProjectOffset { get; init; }

Property Value

uint