MetaHeader

This class is a metafile header record.

class MetaHeader
{
 public:
  unsigned Type;
  unsigned Size;
  Rectangle Bounds;
  Rectangle Frame;
  unsigned Signature;
  unsigned Version;
  unsigned unsigned chars;
  unsigned Records;
  Part Handles;
  Part Reserved;
  unsigned Description;
  unsigned DescriptionOffset;
  unsigned PaletteEntries;
  Dimensions Device;
  Dimensions Millimeters;
  unsigned PixelFormatSize;
  unsigned PixelFormatOffset;
  bool OpenGraphicsLanguage;
};

Type The record type. This member contains the constant MetaType::Header.
Size The size (in bytes) of this structure - that is, sizeof(MetaHeader).
Bounds The dimensions (in device units) of the smallest bounding rectangle of the picture stored in the metafile. The dimensions include the right and bottom edges.
Frame The dimensions (in units of .01 millimeter) of a rectangle that contains the picture stored in the metafile. This rectangle is supplied by the application when creating the metafile. The dimensions include the right and bottom edges.
Signature The signature. This member contains the constant value MetafileSignature::EnhancedMetafile.
Version The version of the metafile version. The current version value is 0x10000.
unsigned chars The size (in bytes) of the enhanced metafile.
Records The number of records in the enhanced metafile.
Handles The number of objects in the handle table of the enhanced metafile.
Reserved Reserved - must be zero.
Description The number of characters in the array that contains the description of the enhanced metafile. When the enhanced metafile does not contain a description string this member is zero.
DescriptionOffset The offset from the beginning of the structure to the array that contains the description. When the enhanced metafile does not contain a description string this member is zero.
PaletteEntries The number of entries in the palette of the metafile.
Device The dimensions (in pixels) of the reference device.
Millimeters The dimensions (in millimeters) of the reference device.
PixelFormatSize The size of the last recorded pixel format in a metafile. If a pixel format is set in a reference device context at the commencement of recording, this member is set to sizeof(PixelFormatDescriptor). When no pixel format is given whilst recording the metafile, this member is set to zero. If more than one pixel format is given, the header points to the last pixel format.
PixelFormatOffset The offset of pixel format used when recording the metafile. If a pixel format is set in the reference device context during or at the commencement of recording, this member is set to the offset of the record PixelFormatDescriptor. When no pixel format is given whilst recording the metafile, this member is set to zero. If more than one pixel format is given, the header points to the last pixel format.
OpenGraphicsLanguage When true, OpenGL records are present in a metafile; otherwise they are not.

Type	The record type. This member contains the constant MetaType::Header.
Size	The size (in bytes) of this structure - that is, sizeof(MetaHeader).
Bounds	The dimensions (in device units) of the smallest bounding rectangle of the picture stored in the metafile. The dimensions include the right and bottom edges.
Frame	The dimensions (in units of .01 millimeter) of a rectangle that contains the picture stored in the metafile. This rectangle is supplied by the application when creating the metafile. The dimensions include the right and bottom edges.
Signature	The signature. This member contains the constant value MetafileSignature::EnhancedMetafile.
Version	The version of the metafile version. The current version value is 0x10000.
unsigned chars	The size (in bytes) of the enhanced metafile.
Records	The number of records in the enhanced metafile.
Handles	The number of objects in the handle table of the enhanced metafile.
Reserved	Reserved - must be zero.
Description	The number of characters in the array that contains the description of the enhanced metafile. When the enhanced metafile does not contain a description string this member is zero.
DescriptionOffset	The offset from the beginning of the structure to the array that contains the description. When the enhanced metafile does not contain a description string this member is zero.
PaletteEntries	The number of entries in the palette of the metafile.
Device	The dimensions (in pixels) of the reference device.
Millimeters	The dimensions (in millimeters) of the reference device.
PixelFormatSize	The size of the last recorded pixel format in a metafile. If a pixel format is set in a reference device context at the commencement of recording, this member is set to sizeof(PixelFormatDescriptor). When no pixel format is given whilst recording the metafile, this member is set to zero. If more than one pixel format is given, the header points to the last pixel format.
PixelFormatOffset	The offset of pixel format used when recording the metafile. If a pixel format is set in the reference device context during or at the commencement of recording, this member is set to the offset of the record PixelFormatDescriptor. When no pixel format is given whilst recording the metafile, this member is set to zero. If more than one pixel format is given, the header points to the last pixel format.
OpenGraphicsLanguage	When true, OpenGL records are present in a metafile; otherwise they are not.