DEVFONTINFO Field - ulEngTag

 ulEngTag (ULONG) 
    Renderer tag. 

    GRETAG        A predefined string, such as the following: 

                  #define GRETAG  ('G'+('R'<<8)+('E'<<16)+('_'<<24)) //"GRE_"
                  

    WINTAG        A predefined string, such as the following: 

                  #define WINTAG  ('W'+('I'<<8)+('N'<<16)+('_'<<24)) //"WIN_"