X-Recipient: archive-cygwin AT delorie DOT com
DomainKey-Signature: a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id
	:list-unsubscribe:list-subscribe:list-archive:list-post
	:list-help:sender:subject:to:references:from:message-id:date
	:mime-version:in-reply-to:content-type
	:content-transfer-encoding; q=dns; s=default; b=GkEGRbkkkZPFbJWt
	ArfzZCB3zJUggnsQT7/DOGs/hj4pMMeiUKIQmZIo1zOLGccwiIOYNK4Db5goTxhF
	VjQSt9hkKD2x7ZQ0r5bU+CcztZI/Qj9kSjOwYZeNOWrbPJKgR0ENCSbBZgxYoPD+
	e10eNGA0adiX4o7Jhznq7ZM7pVU=
DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id
	:list-unsubscribe:list-subscribe:list-archive:list-post
	:list-help:sender:subject:to:references:from:message-id:date
	:mime-version:in-reply-to:content-type
	:content-transfer-encoding; s=default; bh=RrAlD2kTultHUa+b4N2bef
	GKOZc=; b=MaPR36ErAxGk2IhManUXvtEhfkcrD1RnEjpcLyXoMmi36UJ1I/y253
	9+MidR0kKHybAK2BnVXSuOsWn6s+UAxDJUX2wUmStxpmo42e2k7j3VBFg3Nr9jJV
	1/OFbMmjS7Cv0le2usyd/no9CuwwZCvLWr+u5iqZ6DIkosLMHzQeU=
Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Id: <cygwin.cygwin.com>
List-Subscribe: <mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive: <http://sourceware.org/ml/cygwin/>
List-Post: <mailto:cygwin AT cygwin DOT com>
List-Help: <mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender: cygwin-owner AT cygwin DOT com
Mail-Followup-To: cygwin AT cygwin DOT com
Delivered-To: mailing list cygwin AT cygwin DOT com
Authentication-Results: sourceware.org; auth=none
X-Spam-SWARE-Status: No, score=-0.1 required=5.0 tests=AWL,BAYES_00,KAM_ASCII_DIVIDERS,KAM_LAZY_DOMAIN_SECURITY,RCVD_IN_DNSWL_NONE autolearn=no version=3.3.2 spammy=dejavu, DejaVu
X-HELO: mout.kundenserver.de
Subject: Re: Cygwin fails to utilize Unicode replacement character
To: cygwin AT cygwin DOT com
References: <7942b18e-96bf-a824-4dac-82715d87af55 AT towo DOT net> <5b8bdcc4 DOT 1c69fb81 DOT 84d1a DOT e6b9 AT mx DOT google DOT com> <20180903124616 DOT GT6350 AT calimero DOT vinschen DOT de> <20180903145919 DOT GU6350 AT calimero DOT vinschen DOT de> <126ebbde-2432-f19b-6c5c-fe61f31e4647 AT towo DOT net> <20180903171659 DOT GY6350 AT calimero DOT vinschen DOT de> <e3207913-84d8-901a-b5ff-020dd86eed61 AT towo DOT net> <515ad501-3cb4-0236-ce03-0b7d9286bd24 AT towo DOT net> <20180903191437 DOT GZ6350 AT calimero DOT vinschen DOT de> <20180903202716 DOT GA6350 AT calimero DOT vinschen DOT de>
From: Thomas Wolff <towo AT towo DOT net>
Message-ID: <1575af94-78b3-681a-7dc1-0932969ac3e4@towo.net>
Date: Mon, 3 Sep 2018 22:42:28 +0200
User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1
MIME-Version: 1.0
In-Reply-To: <20180903202716.GA6350@calimero.vinschen.de>
Content-Type: text/plain; charset=utf-8; format=flowed
Content-Transfer-Encoding: 8bit
X-IsSubscribed: yes

Am 03.09.2018 um 22:27 schrieb Corinna Vinschen:
> On Sep  3 21:14, Corinna Vinschen wrote:
>> On Sep  3 20:20, Thomas Wolff wrote:
>>> Am 03.09.2018 um 19:56 schrieb Thomas Wolff:
>>>> Am 03.09.2018 um 19:16 schrieb Corinna Vinschen:
>>>>> On Sep  3 18:34, Thomas Wolff wrote:
>>>>>> Am 03.09.2018 um 16:59 schrieb Corinna Vinschen:
>>>>>>> Does anybody have an idea what I'm doing wrong?
>>>>>> This works in mintty, just uploaded a patch. Maybe somehow the
>>>>>> GetConsole
>>>>>> "dc" does not support this usage?
>>>>> ¯\_(ツ)_/¯
>>>> Dito; hold on, sorry, your code does *not* work inside mintty.
>>>> Mine looks a bit different and I thought to have manually verified it's
>>>> functionally equivalent, but indeed there must be something fishy...
>>> You still need to
>>>    SelectObject(cdc, f);
>>> where f is the HFONT of the font you want to check.
>>> To compare, you may check out function win_check_glyphs in file wintext.c in
>>> mintty.
>> Thanks but I don't know how to get a HFONT for the current console font.
>>
>> In the meantime I figured out why my GetCurrentConsoleFontEx call
>> failed with error 87:
>>
>> When looking again I realized there's a member called cbSize.  The MSDN
>> docs neglect to tell that the cbSize member has to be primed with
>> sizeof(CONSOLE_FONT_INFOEX).  As soon as I tried that, the function
>> succeeded.
>>
>> Well, it's a start.  I now have the actual font name.  No idea how to
>> get a HFONT from there, though.  From what I can tell ATM, I'd have to
>> call CreateFont to get a new HFONT and then destroy it again after
>> usage.  This looks pretty wasteful.
> Well, it still doesn't work for me.  I now have the following code:
>
> ===================== SNIP ======================
> #include <windows.h>
> #include <stdio.h>
> #include <wchar.h>
>
> int
> main ()
> {
>    static const wchar_t replacement_char[2] =
>      {
>        0xfffd, /* REPLACEMENT CHARACTER */
>        0x2592  /* MEDIUM SHADE */
>      };
>
>    CONSOLE_FONT_INFOEX cfi;
>    HWND cwnd = GetConsoleWindow ();
>    HDC cdc = GetDC (cwnd);
>    int rp_idx = 1;
>    WORD gi[2] = { 0, 0 };
>
>    memset (&cfi, 0, sizeof cfi);
>    cfi.cbSize = sizeof cfi;
>    if (GetCurrentConsoleFontEx (GetStdHandle (STD_OUTPUT_HANDLE), FALSE, &cfi))
>      {
>        printf ("font %ls\n", cfi.FaceName);
>        HFONT hf = CreateFontW (cfi.dwFontSize.Y, cfi.dwFontSize.X,
> 			      0, 0, cfi.FontWeight, FALSE, FALSE, FALSE,
> 			      DEFAULT_CHARSET, OUT_DEFAULT_PRECIS,
> 			      CLIP_DEFAULT_PRECIS, DEFAULT_QUALITY,
> 			      FIXED_PITCH | FF_DONTCARE, cfi.FaceName);
>        if (hf)
>        	{
> 	  HFONT old_f = SelectObject(cdc, hf);
> 	  if (GetGlyphIndicesW (cdc, replacement_char, 2, gi,
> 				GGI_MARK_NONEXISTING_GLYPHS) != GDI_ERROR)
> 	    {
> 	      printf ("gi = %d %d\n", gi[0], gi[1]);
> 	      if (gi[0] != 0xffff)
> 		rp_idx = 0;
> 	    }
> 	  if (old_f)
> 	    old_f = SelectObject (cdc, old_f);
> 	  DeleteObject (hf);
> 	}
>      }
>
>    printf ("rp_idx = %d\n", rp_idx);
>    return 0;
> }
> ===================== SNAP ======================
>
> Supposedly none of the fonts support 0xfffd:
>
>    $ gcc -g -o cons cons.c -lgdi32
>    $ ./cons
>    font Consolas
>    gi = 65535 879
>    rp_idx = 1
>    $ ./cons
>    font Lucida Console
>    gi = 65535 620
>    rp_idx = 1
>    $ ./cons
>    font Courier New
>    gi = 65535 372
>    rp_idx = 1
>
> So I'm still doing something wrong, apparently.  Any hint?
Test with a font that has the glyph; those 3 don't. Try DejaVu.

--
Problem reports:       http://cygwin.com/problems.html
FAQ:                   http://cygwin.com/faq/
Documentation:         http://cygwin.com/docs.html
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple