See Also
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MLang implements a service called font linking to assist developers who must output strings that contain characters from a variety of character sets. This service creates a custom font that inherits from a specified source font. The IMLangFontLinkand IMLangFontLink2interfaces contain the methods a client uses to perform font linking.
The IMLangFontLink2interface subsumes the functionality of IMLangFontLinkand adds methods to retrieve font information from scripts, and to determine whether a given character is supported in Unicode. Both interfaces inherit from the IMLangCodePagesinterface, allowing direct access to the code page methods.
Use the IMLangFontLink2::CodePageToScriptIDmethod to retrieve the script identifier associated with a code page. Use the IMLangFontLink2::GetScriptFontInfomethod to retrieve font information for the specified script.
Use the IMLangCodePages::GetCharCodePages, IMLangCodePages::GetStrCodePages, and IMLangFontLink2::GetFontCodePagesmethods to determine if a custom font is needed for the given string or character.
Try to use a font that will display as many of the characters in the string as possible. This helps limit the number of times a custom font must be created.You can use the IMLangFontLink2::GetFontUnicodeRangesto retrieve information about which Unicode characters are supported by a font. If a custom font is needed, call IMLangFontLink2::MapFontto create a font.
IMLangFontLink2implements a font cache to store the custom fonts that are created. When a custom font is no longer being used, it must be released from the font cache through the IMLangFontLink2::ReleaseFontmethod. This allows the font object to be deleted if the cache becomes full.