Source code of Windows XP (NT5)
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/*++
Copyright (c) 1995 Microsoft Corporation
Module Name:
bootfint.h
Abstract:
Header file describing the bootfont.bin file used to provide
dbcs support during system or setup bootstrap.
Author:
tedm 11-July-1995
Revision History:
--*/
#pragma pack(1)
//
// Define maximum number of dbcs lead byte ranges we support.
//
#define MAX_DBCS_RANGE 5
//
// Define signature value.
//
#define BOOTFONTBIN_SIGNATURE 0x5465644d
//
// Define structure used as a header for the bootfont.bin file.
//
typedef struct _BOOTFONTBIN_HEADER {
//
// Signature. Must be BOOTFONTBIN_SIGNATURE.
//
ULONG Signature;
//
// Language id of the language supported by this font.
// This should match the language id of resources in msgs.xxx.
//
ULONG LanguageId;
//
// Number of sbcs characters and dbcs characters contained in the file.
//
unsigned NumSbcsChars;
unsigned NumDbcsChars;
//
// Offsets within the file to the images.
//
unsigned SbcsOffset;
unsigned DbcsOffset;
//
// Total sizes of the images.
//
unsigned SbcsEntriesTotalSize;
unsigned DbcsEntriesTotalSize;
//
// Dbcs lead byte table. Must contain a pair of 0's to indicate the end.
//
UCHAR DbcsLeadTable[(MAX_DBCS_RANGE+1)*2];
//
// Height values for the font.
// CharacterImageHeight is the height in scan lines/pixels of the
// font image. Each character is drawn with additional 'padding'
// lines on the top and bottom, whose sizes are also contained here.
//
UCHAR CharacterImageHeight;
UCHAR CharacterTopPad;
UCHAR CharacterBottomPad;
//
// Width values for the font. These values contain the width in pixels
// of a single byte character and double byte character.
//
// NOTE: CURRENTLY THE SINGLE BYTE WIDTH *MUST* BE 8 AND THE DOUBLE BYTE
// WIDTH *MUST* BE 16!!!
//
UCHAR CharacterImageSbcsWidth;
UCHAR CharacterImageDbcsWidth;
} BOOTFONTBIN_HEADER, *PBOOTFONTBIN_HEADER;
#pragma pack()
//
// Images themselves follow.
//
// First there are SbcsCharacters entries for single-byte chars.
// The first byte in each entry is the ascii char code. The next n bytes are
// the image. n is dependent on the width and height of an sbcs char.
//
// Following these are the dbcs images. The first 2 bytes are the dbcs
// character code (highbyte lowbyte) and the next n bytes are the image.
// n is dependent on the width and height of a dbcs char.
//
// Important note: the characters must be sorted in ascending order!
//