:   '''[font] actual''' ''font'' ?'''-displayof''' ''window''? ?''option''?

Returns information about the actual attributes that are obtained when ''font'' is used on ''window'' 's display; the actual attributes obtained may differ from the attributes requested due to platform-dependant limitations, such as the availability of font families and pointsizes. ''font'' is a font description; see [http://www.tcl.tk/man/tcl8.6/TkCmd/font.htm#M13%|%FONT DESCRIPTIONS]. If the ''window'' argument is omitted, it defaults to the main window. If ''option'' is specified, returns the value of that attribute; if it is omitted, the return value is a list of all the attributes and their values. See [http://www.tcl.tk/man/tcl8.6/TkCmd/font.htm#M24%|%FONT OPTIONS] for a list of the possible attributes.

<<discussion>>

Question: what kind of paramater is given to the -displayof argument? A Tk window name ?

For instance, if I say:
======
  button .b -font fixed
  font actual -dislayof .b
======
I see an error.  However, I '''seem''' to get some sort of answer when I say:
======
  font actual .b
======
Are the results the real information, or the info that Tk uses, then deviates from until it finds a ''best match''?

Feb 18th: You're using the wrong syntax for '''font actual'''. It should be [[font actual  ''font'' -displayof ''window'']], with "-displayof ''window''" being optional. For example:
======
  font actual "Arial"
  font actual "Arial" -displayof .b
======
If the font doesn't exist, Tk uses a default; that's what's returned, if you don't have a font called .b and use [[font actual .b]]. When you use [[font actual -displayof .b]] you raise an error because you're missing the ''font'' argument.

<<discussion>>
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**See also**
   * [font configure]
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