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bug#8562: Emacs 23.1 and later don't work in windows 98

From: oslsachem
Subject: bug#8562: Emacs 23.1 and later don't work in windows 98
Date: Tue, 31 May 2011 20:16:00 +0200

> The safest place is the same directory where you have emacs.exe.  But
> doing what you did is also OK.

I tried putting the unicows.dll there too and adding that directory to
the path but I still got the same error (120)

> The difference here is that your sample program dynamically loads
> unicows.dll:
>> Breakpoint 1, WinMain (hInstance=0x400000, hPrevInstance=0x0,
>>     lpCmdLine=0x81631ea2 "", nCmdShow=10) at sample.c:139
>> 139     hm_unicows = LoadLibrary("unicows.dll");
> whereas Emacs doesn't, AFAICT.

I haven't found any reference to the word unicows in the source files.
I suspect Emacs is not aware of the availability of the MSLU library
for windows 98, by reading this comment (which I found while searching
for the word unicode) from w32font.c:510

  if (GetTextExtentPoint32W (dc, wcode, nglyphs, &size))
      total_width = size.cx;

  /* On 95/98/ME, only some unicode functions are available, so fallback
     on doing a dummy draw to find the total width.  */
  if (!total_width)
      RECT rect;
      rect.top = 0; rect.bottom = font->height; rect.left = 0; rect.right = 1;
      DrawTextW (dc, wcode, nglyphs, &rect,
      total_width = rect.right;

DrawTextW is a unicode function which is available (from User32.dll)


But GetTextExtentPoint32W is a unicode function which is available too
(from unicows.dll)


>  Could you try loading that DLL in
> Emacs, by adding just the single line as the one above to some
> function that is run early during the startup, e.g. in globals_of_w32?
> (There's no need to go to extra lengths such as calling
> GetOutlineTextMetricsW and GetTextMetricsW through function pointers.)
> Then recompile Emacs and see if that solves the problem.

I see the same error (120)



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