用freetype读fnt/fon字体的问题

[FF W]

#include "ft2build.h"
  #include FT_WINFONTS_H
   
  FT_Init_FreeType(&m_ftLibrary);
   
  nReturnValue=FT_New_Face(m_ftLibrary,” 
C:\\WINDOWS\\Fonts\\roman.fon”,0,&face);
   
  Why is the return value 2?

       
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