The ENHMETAHEADER3 structure contains enhanced-metafile data including the dimensions of the metafile image, the number of records in the metafile, and the resolution of the device on which the metafile was created.

 

C++ Syntax

 

typedef struct {

DWORD爄Type;

DWORD爊Size;

RECTL爎clBounds;

RECTL爎clFrame;

DWORD燿Signature;

DWORD爊Version;

DWORD爊Bytes;

DWORD爊Records;

WORD爊Handles;

WORD爏Reserved;

DWORD爊Description;

DWORD爋ffDescription;

DWORD爊PalEntries;

SIZEL爏zlDevice;

SIZEL爏zlMillimeters;

} ENHMETAHEADER3;

 

FreeBASIC 语法

 

TYPE ENHMETAHEADER3

itype AS DWORD

nSize AS DWORD

rclBounds AS RECTL

rclFrame AS RECTL

dSignature AS DWORD

nVersion AS DWORD

nBytes AS DWORD

nRecords AS DWORD

nHandles AS WORD

sReserved AS WORD

nDescription AS DWORD

offDescription AS DWORD

nPalEntries AS DWORD

szlDevice AS SIZEL

szlMillimeters AS SIZEL

END TYPE

 

成员

 

iType

 

Record type. Value is always EMR_HEADER.

 

nSize

 

Structure size, in bytes. This may be greater than the value returned by SIZEOF (ENHMETAHEADER3).

 

rclBounds

 

Bounding rectangle, in device units, for the image stored in the metafile.

 

rclFrame

 

Rectangle, in 0.01 millimeter units, that surrounds the image stored in the metafile.

 

dSignature

 

Must be ENHMETA_SIGNATURE.

 

nVersion

 

Version number of the metafile format. The current version is &H10000.

 

nBytes

 

Size, in bytes, of the metafile.

 

nRecords

 

Number of records in the metafile.

 

nHandles

 

Number of handles in the metafile handle table. Handle index zero is reserved.

 

sReserved

 

Reserved. Must be zero.

 

nDescription

 

Number of characters in the string that contains the description of the metafile's contents. This member is 0 if the metafile does not have a description string.

 

offDescription

 

Offset from the beginning of the ENHMETAHEADER3 structure to the string that contains the description of the metafile's contents. This member is 0 if the metafile does not have a description string.

 

nPalEntries

 

Number of entries in the metafile palette.

 

szlDevice

 

Resolution, in pixels, of the reference device.

 

szlMillimeters

 

Resolution, in millimeters, of the reference device.