Re: [h-e-w] `x-list-fonts' on Windows 7

[Eli Zaretskii]

> Date: Fri, 31 May 2013 09:45:39 -0700 (PDT)
> From: Drew Adams <address@hidden>
> 
> `x-list-fonts' on Windows XP worked fine with all Emacs versions starting
> with 20 (at least).
> 
> On Windows 7 with Emacs 20, `x-list-fonts' systematically returns nil,
> even when passed the value of the current frame's `font' parameter.
> 
> E.g., (x-list-fonts "-*-Courier-normal-r-*-*-14-112-120-120-c-*-iso8859-1")
> returns nil, even though the current frame uses exactly that font.
> 
> I do not have Emacs 21 on Windows 7, but for Emacs 22 and later there is
> no such problem.
> 
> Anyone have an idea about this?  I'm using a binary, not building Emacs 20,
> and `x-list-fonts' is built in, so I imagine there is no solution, but
> perhaps someone has an idea?

Emacs 20 used an old and deprecated API (EnumFontFamilies) to list the
fonts.  Emacs 21 and later uses more modern APIs when available.  I
cannot find any discussions of EnumFontFamilies failure on Windows 7,
but I guess this is what you see.  Or maybe Emacs called that API in a
semi-buggy way that fails only on later Windows versions.

Sorry, I don't know more and don't have an Emacs 20 binary to debug
this.