https://learn.microsoft.com/en-us/windows/win32/api/msctf/nn-msctf-itfinputprocessorprofiles?redirectedfrom=MSDN
ITfInputProcessorProfiles (msctf.h) - Win32 apps | Microsoft Learn
The ITfInputProcessorProfiles interface is implemented by the TSF manager and used by an application or text service to manipulate the language profile of one...
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