hddf (HDDF) - input
fFontStyle (ULONG) - input
A NULL value for this parameter will set the font-style back to the default. Any of the following values can be specified:
FM_SEL_ITALIC FM_SEL_BOLD
FM_SEL_UNDERSCORE
Note: There is a 4-byte ESC code overhead in the DDF internal buffer for fFontStyle.
rc (BOOL) - returns
TRUE