IDWriteFontFace::GetGlyphIndices Method

Returns the nominal mapping of UCS4 Unicode code points to glyph indices as defined by the font 'CMAP' table.

Syntax

virtual HRESULT GetGlyphIndices(
  [in]   const UINT32 * codePoints,
  UINT32  codePointCount,
  [out]  UINT16 * glyphIndices
) = 0;

Parameter

• codePoints [in]
  An array of USC4 code points from which to obtain nominal glyph indices. The array must be allocated and be able to contain the number of elements specified by codePointCount.

• codePointCount
  The number of elements in the codePoints array.

• glyphIndices [out]
  When this method returns, contains a pointer to an array of nominal glyph indices filled by this function.

Rückgabewert

Ist Methode erfolgreich, wird "S_OK" zurückgegeben. Andernfalls wird ein HRESULT-Fehlercode zurückgegeben.

Hinweise

Note that this mapping is primarily provided for line layout engines built on top of the physical font API. Because of OpenType glyph substitution and line layout character substitution, the nominal conversion does not always correspond to how a Unicode string will map to glyph indices when rendering using a particular font face. Also, note that Unicode variant selectors provide for alternate mappings for character to glyph. This call will always return the default variant.

Anforderungen

Siehe auch

IDWriteFontFace