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From: "Joakim Hårsman" <joakim.harsman@gmail.com>
To: Lennart Borgman <lennart.borgman@gmail.com>
Cc: 10299@debbugs.gnu.org
Subject: bug#10299: Emacs doesn't handle Unicode characters in keyboard layout on MS Windows
Date: Mon, 19 Dec 2011 12:04:46 +0100	[thread overview]
Message-ID: <CAFJF9wVHjBjSnXqa6FsKjd_tCyn5tcsYze0zb95VfRh1eTaFpw@mail.gmail.com> (raw)
In-Reply-To: <CANbX365Jb--KyoZ2GEM4bNCC9fQswNHTekL5_-1WLDhpz0+Acg@mail.gmail.com>

On 19 December 2011 11:59, Lennart Borgman <lennart.borgman@gmail.com> wrote:
> On Mon, Dec 19, 2011 at 11:44, Joakim Hårsman <joakim.harsman@gmail.com> wrote:
>> On 18 December 2011 19:13, Eli Zaretskii <eliz@gnu.org> wrote:
>>>> Date: Sun, 18 Dec 2011 18:31:55 +0100
>>>> From: Joakim Hårsman <joakim.harsman@gmail.com>
>>>>
>>>> > That's good news.  However, I'm puzzled: are you saying that the code
>>>> > points passed by Windows to Emacs for the characters generated by MKLC
>>>> > are outside the Unicode BMP, i.e. larger than 65535?  If so, what code
>>>> > points are they?
>>>>
>>>> No, none of the characters I needed are outside the BMP.
>>>>
>>>> WM_CHAR encodes the codepoint in UTF-16 inside wParam, while
>>>> WM_UNICHAR uses UTF-32. So if I press something which gives U+2218
>>>> RING OPERATOR, I get a WM_CHAR event with a wParam of 2228248 or
>>>> 0x220018.
>>>
>>> ??? UTF-16 encodes the characters in the BMP as themselves, i.e. a
>>> single 16-bit value that is numerically identical to the codepoint.
>>> That is, you should have gotten 0x2218.  What am I missing?
>>
>> I just assumed Windows encoded the codepoints into a DWORD in some
>> funky way, but looking more closely at the documentattion it appears
>> like wParam should just be the codepoint. Even more strangely, some
>> places claim that if a keyboard produces a character outside the BMP,
>> you get two WM_CHAR events.
>>
>> From what I can tell, Emacs itself never alters wParam, but I guess
>> Windows might do some funky multibyte encoding since Emacs isn't
>> completely Unicode?
>
> Maybe Emacs on windows still is using the ANSI version of DefWindowProc? See
>
> http://blogs.msdn.com/b/michkap/archive/2007/03/25/1945659.aspx

I looked at that page as well, but it says that the ANSI DefWindowProc
is supposed to post one or two ANSI characters, and it definitely
isn't doing that. I get teh correct Unciode character, just spread
over the low and high word of the wParam dword.





  reply	other threads:[~2011-12-19 11:04 UTC|newest]

Thread overview: 44+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-12-14 20:39 bug#10299: Emacs doesn't handle Unicode characters in keyboard layout on MS Windows Joakim Hårsman
2011-12-15  6:22 ` Eli Zaretskii
2011-12-15  6:51   ` Kenichi Handa
2011-12-15  7:53   ` Joakim Hårsman
2011-12-15 10:52     ` Eli Zaretskii
2011-12-15 11:11       ` Joakim Hårsman
2011-12-15 13:16         ` Eli Zaretskii
2011-12-15 14:40   ` Jason Rumney
2011-12-15 15:08     ` Lennart Borgman
2011-12-15 15:40     ` Joakim Hårsman
2011-12-15 17:34     ` Eli Zaretskii
2011-12-15 20:50       ` Joakim Hårsman
2011-12-15 21:47         ` Joakim Hårsman
2011-12-16  8:13           ` Eli Zaretskii
2011-12-16 11:01             ` Joakim Hårsman
2011-12-16 11:14               ` Dani Moncayo
2011-12-16 11:26                 ` Eli Zaretskii
2011-12-17 12:52                   ` Joakim Hårsman
2011-12-17 15:23                     ` Eli Zaretskii
     [not found]                       ` <CAFJF9wW7Cfmad+BmjQ4A-sVeLi+eRvOXSWfD=--=QJmr3Ver6w@mail.gmail.com>
2011-12-18 18:13                         ` Eli Zaretskii
2011-12-19 10:44                           ` Joakim Hårsman
2011-12-19 10:59                             ` Lennart Borgman
2011-12-19 11:04                               ` Joakim Hårsman [this message]
2011-12-19 11:17                                 ` Lennart Borgman
2011-12-19 11:50                                   ` Joakim Hårsman
2011-12-19 13:31                           ` Jason Rumney
2011-12-20 21:16                           ` Joakim Hårsman
2012-01-14 16:40                             ` Joakim Hårsman
2012-01-16 14:03                               ` Stefan Monnier
2012-01-23 19:15                                 ` Joakim Hårsman
2012-01-24  1:35                                   ` Stefan Monnier
2012-01-24  9:40                                     ` Andreas Schwab
2012-01-24 12:03                                       ` Juanma Barranquero
2012-01-24 20:42                                         ` Joakim Hårsman
2012-07-28 14:50                                           ` Eli Zaretskii
2012-08-06 20:20                                             ` Joakim Hårsman
2012-08-07  2:53                                               ` Eli Zaretskii
2012-08-07 19:47                                                 ` Joakim Hårsman
2012-08-08  2:48                                                   ` Eli Zaretskii
2012-08-08 18:54                                                     ` Joakim Hårsman
2012-08-10  6:56                                                       ` Eli Zaretskii
2012-08-07 12:15                                               ` Jason Rumney
2012-08-07 19:49                                                 ` Joakim Hårsman
2011-12-16 11:22               ` Eli Zaretskii

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