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Thanks, Konstantin
On Wed, Sep 27, 2017 at 7:45 AM, 'Konstantin Mironovich' [email protected]
[wtl] <[email protected]> wrote:
>
>
> =EF=BB=BF
> Hi gentlefolks,
>
> Nenad,
> in our project we also use std::wstring and Qt
> please look at QString http://doc.qt.io/qt-5/qstring.html
> it has some useful stuff like toStdString(), toStdWString(), etc
>
> Konstantin
>
>
> -km
>
> ----- Original Message -----
> *From:* Nenad Stefanovi=C4=87 [email protected] [wtl]
> <[email protected]+[wtl]>
> *To:* [email protected]
> *Sent:* Wednesday, September 27, 2017 1:25 AM
> *Subject:* Re: [wtl] Announcing start of WTL10
>
>
>
> Hi Jim,
>
> Thank you for the analysis and suggestions.
>
> Your own implementation shows how easy it is to use std::string with WTL
> without adding any direct support for it. I am still listening to all
> arguments and suggestions.
>
> Cheers,
> Nenad
>
>
> On Tue, Sep 26, 2017 at 5:41 PM, Jim Barry [email protected] [wtl] <
> [email protected]> wrote:
>
>>
>>
>> Hi Nenad,
>>
>> I think it would be good to support std::string. However, it is perhaps
>> not quite as straightforward as it might seem.
>>
>> I have added some std::string support to my local copy of WTL. I strongl=
y
>> adhere to the "UTF-8 Everywhere" philosophy (see
>> http://utf8everywhere.org/) where every std::string is considered to be
>> UTF-8 encoded, and std::wstring is not used except for performing
>> wide/narrow conversions at API boundaries.
>>
>> So, for example, std::string wrappers for Get/SetWindowText look
>> something like this:
>>
>> void SetWindowText(std::string const & text)
>> {
>> SetWindowText(widen(text).c_str());
>> }
>>
>> std::string GetWindowText() const
>> {
>> ATL::CString str;
>> GetWindowText(str);
>> return narrow(str);
>> }
>>
>> The "get" wrapper delegates to the CString version, partly for
>> convenience, and also because the non-const version of std::string::data=
()
>> is only available since C++17.
>>
>> I suppose that some people are still going to want to use std::wstring,
>> which presents a difficulty with the "get" wrappers, since functions can=
't
>> be overloaded on return type. A shim type could be returned (offering
>> user-defined conversions to std::string/wstring) but this approach has s=
ome
>> problems.
>>
>> Otherwise, if both std::string and std::wstring support is required, the=
n
>> out-parameters must be used:
>>
>> BOOL SetWindowText(std::string const & text);
>> BOOL SetWindowText(std::wstring const & text);
>> int GetWindowText(std::string & text);
>> int GetWindowText(std::wstring & text);
>>
>> Which, if nothing else, is in keeping with the existing WTL style.
>>
>> This is all assuming a Unicode build. ANSI flavours of WinAPI functions
>> (e.g. GetWindowTextA) don't understand UTF-8 so it makes little sense fo=
r
>> Unicode strings to exist in an ANSI build.
>>
>> Thoughts?
>>
>>
>> On 22 September 2017 at 01:27, Nenad Stefanovi=C4=87 [email protected]
>> [wtl] <[email protected]> wrote:
>> >
>> >
>> >
>> > Hi Jeff,
>> >
>> > That can be done, depending on how many people are requesting it. Sinc=
e
>> WTL already uses CString, you can simply copy values from CString to
>> std:string in your code.
>> >
>> > I hope that others can reply to this thread if they think that direct
>> use of std:string/wstring is needed.
>> >
>> > Cheers,
>> > Nenad
>>
>>
>=20
>
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<div dir=3D"ltr">Thanks,=C2=A0<span style=3D"font-family:Arial,helvetica,cl=
ean,sans-serif;font-size:13px">Konstantin</span><div><br></div></div><div c=
lass=3D"gmail_extra"><br><div class=3D"gmail_quote">On Wed, Sep 27, 2017 at=
7:45 AM, 'Konstantin Mironovich' <a href=3D"mailto:[email protected]"=
>[email protected]</a> [wtl] <span dir=3D"ltr"><<a href=3D"mailto:wtl@yahoo=
groups.com" target=3D"_blank">[email protected]</a>></span> wrote:<br>=
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex">
<u></u>
=20
<div style=3D"background-color:#fff">
<span style=3D"display:none">=C2=A0</span>
<div id=3D"m_8501446939532124814ygrp-mlmsg">
<div id=3D"m_8501446939532124814ygrp-msg">
<div id=3D"m_8501446939532124814ygrp-text">
=20=20=20=20=20=20
=20=20=20=20=20=20
<p>=EF=BB=BF<u></u>
</p><div><font face=3D"Calibri">Hi gentlefolks,</font></div>
<div><font face=3D"Calibri"></font>=C2=A0</div>
<div><font face=3D"Calibri">Nenad,</font></div>
<div><font face=3D"Calibri">in our project we also use std::wstring and=20
Qt</font></div>
<div><font face=3D"Calibri">please look at QString <a href=3D"http://doc.qt=
.io/qt-5/qstring.html" target=3D"_blank">http://doc.qt.io/qt-5/qstring.<wbr=
>html</a></font></div>
<div><font face=3D"Calibri">it has some useful stuff like toStdString(),=20
toStdWString(), etc</font></div>
<div><font face=3D"Calibri"></font>=C2=A0</div>
<div><font face=3D"Calibri">Konstantin</font></div>
<div><font face=3D"Calibri"></font>=C2=A0</div>
<div><font face=3D"Calibri"></font>=C2=A0</div>
<div><font size=3D"2">-km<br></font></div>
<blockquote style=3D"BORDER-LEFT:#000000 2px solid;MARGIN-LEFT:5px;MARGIN-R=
IGHT:0px"><span class=3D"">
<div style=3D"FONT:10pt arial">----- Original Message ----- </div>
<div style=3D"FONT:10pt arial;BACKGROUND:#e4e4e4"><b>From:</b>=20
<a title=3D"[email protected]" href=3D"mailto:[email protected]+[wtl]=
" target=3D"_blank">Nenad=20
Stefanovi=C4=87 [email protected] [wtl]</a> </div>
</span><div><div class=3D"h5"><div style=3D"FONT:10pt arial"><b>To:</b> <=
a title=3D"[email protected]" href=3D"mailto:[email protected]" target=
=3D"_blank">[email protected]</a> </div>
<div style=3D"FONT:10pt arial"><b>Sent:</b> Wednesday, September 27, 2017=
1:25=20
AM</div>
<div style=3D"FONT:10pt arial"><b>Subject:</b> Re: [wtl] Announcing start=
of=20
WTL10</div>
<div><br></div><span>=C2=A0</span>=20
<div id=3D"m_8501446939532124814ygrp-text">
<p>
</p><div dir=3D"ltr">Hi Jim,
<div><br></div>
<div>Thank you for the analysis and suggestions.</div>
<div><br></div>
<div>Your own implementation shows how easy it is to use std::string with=
WTL=20
without adding any direct support for it. I am still listening to all=20
arguments and suggestions.</div>
<div><br></div>
<div>Cheers,</div>
<div>Nenad</div>
<div><br></div></div>
<div class=3D"gmail_extra"><br>
<div class=3D"gmail_quote">On Tue, Sep 26, 2017 at 5:41 PM, Jim Barry <a =
href=3D"mailto:[email protected]" target=3D"_blank">[email protected]</a> [wt=
l] <span dir=3D"ltr"><<a href=3D"mailto:[email protected]" target=3D"_=
blank">[email protected]</a>></span> wrote:<br>
<blockquote style=3D"BORDER-LEFT:#ccc 1px solid" class=3D"gmail_quote"><u=
></u>
<div style=3D"BACKGROUND-COLOR:#fff"><span>=C2=A0</span>=20
<div id=3D"m_8501446939532124814m_-455343694678785389ygrp-mlmsg">
<div id=3D"m_8501446939532124814m_-455343694678785389ygrp-msg">
<div id=3D"m_8501446939532124814m_-455343694678785389ygrp-text">
<p></p>
<div dir=3D"ltr">Hi Nenad,<br><br>I think it would be good to support=20
std::string. However, it is perhaps not quite as straightforward as it =
might=20
seem.<br><br>I have added some std::string support to my local copy of =
WTL.=20
I strongly adhere to the "UTF-8 Everywhere" philosophy (see <=
a href=3D"http://utf8everywhere.org/" target=3D"_blank">http://utf8everywhe=
re.org/</a>) where every std::string is=20
considered to be UTF-8 encoded, and std::wstring is not used except for=
=20
performing wide/narrow conversions at API boundaries.<br><br>So, for=20
example, std::string wrappers for Get/SetWindowText look something like=
=20
this:<br><br>
<div><span style=3D"FONT-FAMILY:monospace,monospace">void=20
SetWindowText(std::string const & text)</span><br></div><font face=
=3D"monospace, monospace">{<br>=C2=A0 =C2=A0=20
SetWindowText(widen(text).c_st<wbr>r());<br>}<br><br>std::string=20
GetWindowText() const<br>{<br>=C2=A0 =C2=A0 ATL::CString str;<br>=C2=A0=
=20
=C2=A0 GetWindowText(str);<br>=C2=A0 =C2=A0 return=20
narrow(str);<br>}<br></font><br>The "get" wrapper delegates t=
o the CString=20
version, partly for convenience, and also because the non-const version=
of=20
std::string::data() is only available since C++17.<br><br>I suppose tha=
t=20
some people are still going to want to use std::wstring, which presents=
a=20
difficulty with the "get" wrappers, since functions can't=
be overloaded on=20
return type. A shim type could be returned (offering user-defined=20
conversions to std::string/wstring) but this approach has some=20
problems.<br><br>Otherwise, if both std::string and std::wstring suppor=
t is=20
required, then out-parameters must be used:<br><br><font face=3D"monosp=
ace, monospace">BOOL SetWindowText(std::string const &=20
text);<br>BOOL SetWindowText(std::wstring const & text);<br>int=20
GetWindowText(std::string & text);<br>int GetWindowText(std::wstrin=
g=20
& text);</font>
<div><br></div>
<div>Which, if nothing else, is in keeping with the existing WTL=20
style.</div>
<div><br></div>
<div>This is all assuming a Unicode build. ANSI flavours of WinAPI func=
tions=20
(e.g. GetWindowTextA) don't understand UTF-8 so it makes little sen=
se for=20
Unicode strings to exist in an ANSI build.=C2=A0</div>
<div><br></div>
<div>Thoughts?</div><span>
<div><br><br>On 22 September 2017 at 01:27, Nenad Stefanovi=C4=87 <a hr=
ef=3D"mailto:[email protected]" target=3D"_blank">[email protected]</a>=
=20
[wtl] <<a href=3D"mailto:[email protected]" target=3D"_blank">wtl@=
yahoogroups.com</a>>=20
wrote:<br>><br>><br>><br>> Hi Jeff,<br>><br>> That ca=
n be=20
done, depending on how many people are requesting it. Since WTL already=
uses=20
CString, you can simply copy values from CString to std:string in your=
=20
code.<br>><br>> I hope that others can reply to this thread if th=
ey=20
think that direct use of std:string/wstring is needed.<br>><br>>=
=20
Cheers,<br>> Nenad</div></span></div>
<p></p></div>
<div style=3D"HEIGHT:0px;COLOR:#fff"></div></div></div></div></blockquo=
te></div><br></div>
<p></p><p></p></div>
</div></div></blockquote><p></p>
</div>
=20=20=20=20=20
=20=20=20=20
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</div>
=20=20
</blockquote></div><br></div>
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