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GetGlyphIndices function

The GetGlyphIndices function translates a string into an array of glyph indices. The function can be used to determine whether a glyph exists in a font.

Syntax


DWORD GetGlyphIndices(
  _In_   HDC hdc,
  _In_   LPCTSTR lpstr,
  _In_   int c,
  _Out_  LPWORD pgi,
  _In_   DWORD fl
);

Parameters

hdc [in]

A handle to the device context.

lpstr [in]

A pointer to the string to be converted.

c [in]

The length of both the length of the string pointed to by lpstr and the size (in WORDs) of the buffer pointed to by pgi.

pgi [out]

This buffer must be of dimension c. On successful return, contains an array of glyph indices corresponding to the characters in the string.

fl [in]

Specifies how glyphs should be handled if they are not supported. This parameter can be the following value.

ValueMeaning
GGI_MARK_NONEXISTING_GLYPHS

Marks unsupported glyphs with the hexadecimal value 0xffff.

 

Return value

If the function succeeds, it returns the number of bytes (for the ANSI function) or WORDs (for the Unicode function) converted.

If the function fails, the return value is GDI_ERROR.

Remarks

This function attempts to identify a single-glyph representation for each character in the string pointed to by lpstr. While this is useful for certain low-level purposes (such as manipulating font files), higher-level applications that wish to map a string to glyphs will typically wish to use the Uniscribe functions.

Requirements

Minimum supported client

Windows 2000 Professional [desktop apps only]

Minimum supported server

Windows 2000 Server [desktop apps only]

Header

Wingdi.h (include Windows.h)

Library

Gdi32.lib

DLL

Gdi32.dll

Unicode and ANSI names

GetGlyphIndicesW (Unicode) and GetGlyphIndicesA (ANSI)

See also

Fonts and Text Overview
Font and Text Functions
GetFontUnicodeRanges

 

 

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