HRESULT IDWriteFontFallback::MapCharacters(IDWriteTextAnalysisSource* source, UINT32 textPosition, UINT32 textLength, [in, optional] IDWriteFontCollection* baseFontCollection, [in, optional] wchar_t* baseFamilyName, DWRITE_FONT_WEIGHT baseWeight, DWRITE_FONT_STYLE baseStyle, DWRITE_FONT_STRETCH baseStretch, [out] UINT32* mappedLength, [out] IDWriteFont** mappedFont, [out] FLOAT* scale)

'宣言
 
Public Overloads Function MapCharacters( _
   ByVal source As System.IntPtr, _
   ByVal textPosition As System.Integer, _
   ByVal textLength As System.Integer, _
   ByVal baseFontCollection As FontCollection, _
   ByVal baseFamilyName As System.String, _
   ByVal baseWeight As FontWeight, _
   ByVal baseStyle As FontStyle, _
   ByVal baseStretch As FontStretch, _
   ByRef mappedLength As System.Integer, _
   ByRef scale As System.Single _
) As Font

public Font MapCharacters( 
   System.IntPtr source,
   System.int textPosition,
   System.int textLength,
   FontCollection baseFontCollection,
   System.string baseFamilyName,
   FontWeight baseWeight,
   FontStyle baseStyle,
   FontStretch baseStretch,
   out System.int mappedLength,
   out System.float scale
)