im using DirectN in my project, everything else works fine, i can use DWriteFunctions class to create a factory, except i can't find a class to access IDWriteLocalFontFileLoader interface to use the method inside. i googled a lot but i just don't know how to do that
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IDWriteFactory::CreateFontFileReference(localpath, ...) will get you a IDWriteFontFile, and from this you can call IDWriteFontFile::GetLoader that you should be able to cast into a IDWriteLocalFontFileLoader since it was loaded with a local font file (if the file pointed by the path exists). – Simon Mourier Sep 01 '21 at 15:25
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Microsoft has a code sample that illustrates an implementation for your scenario: https://github.com/microsoft/Windows-classic-samples/tree/main/Samples/DirectWriteCustomFontSets – Peter Constable Sep 24 '21 at 16:00
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You need to do this:
- get an IDWriteFactory using DWriteCreateFactory function .
- call IDWriteFactory::CreateFontFileReference with a font localpath
CreateFontFileReference(localpath, ...). This will get you a IDWriteFontFile reference. - call IDWriteFontFile::GetLoader this will get you a IDWriteFontFileLoader reference.
- cast that reference into a IDWriteLocalFontFileLoader. It should world since it was loaded from a local font file. The file pointed by the path must exists.
Simon Mourier
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