I think the last sentence was missing a „not“ and referring to the same 
manifest?

However the results are a bit of a mess, but utf-8 handling for argv would be 
great plus (if converted correctly), right?


--
http://bernd.eckenfels.net
________________________________
Von: core-libs-dev <core-libs-dev-r...@openjdk.java.net> im Auftrag von Magnus 
Ihse Bursie <magnus.ihse.bur...@oracle.com>
Gesendet: Tuesday, October 5, 2021 10:34:26 AM
An: John Platts <john_pla...@hotmail.com>; core-libs-dev 
<core-libs-dev@openjdk.java.net>
Betreff: Re: Implementing JEP 400 on Windows 10 and Windows 11

On 2021-10-05 03:22, John Platts wrote:
> I wrote a test program (in C++) to detect the codepages that would be 
> returned by the GetACP(), GetOEMCP(), and GetConsoleCP() functions when the 
> <utf8:activeCodePage>UTF-8</utf8:activeCodePage> setting is added to the 
> manifest.
>
> The <utf8:activeCodePage> manifest element (supported on Windows 10 Version 
> 1903 or later) is in the 
> http://schemas.microsoft.com/SMI/2019/WindowsSettings namespace and is added 
> to the asmv3:WindowsSettings element as shown below:
> <asmv3:windowsSettings 
> xmlns:dpi1="http://schemas.microsoft.com/SMI/2005/WindowsSettings";
>                         
> xmlns:dpi2="http://schemas.microsoft.com/SMI/2016/WindowsSettings";
>                         
> xmlns:utf8="http://schemas.microsoft.com/SMI/2019/WindowsSettings";>
>      <dpi1:dpiAware>true/PM</dpi1:dpiAware>
>      <dpi2:dpiAwareness>PerMonitorV2, PerMonitor, system</dpi2:dpiAwareness>
>      <utf8:activeCodePage>UTF-8</utf8:activeCodePage>
> </asmv3:windowsSettings>
>
> Here is the output of the test program without the 
> <utf8:activeCodePage>UTF-8</utf8:activeCodePage> setting present in the 
> executable manifest:
> GetACP() result:       1252
> GetOEMCP() result:     437
> GetConsoleCP() result: 437
> System default LCID:   1033
> User default LCID:     1033
> User default UI LCID:  1033
> Codepage from system default LCID:  1252
> Codepage from user default LCID:    1252
> Codepage from user default UI LCID: 1252
>
> Here is the output of the same test program with an executable manifest that 
> includes the <utf8:activeCodePage>UTF-8</utf8:activeCodePage> setting:
> GetACP() result:       65001
> GetOEMCP() result:     65001
> GetConsoleCP() result: 437
> System default LCID:   1033
> User default LCID:     1033
> User default UI LCID:  1033
> Codepage from system default LCID:  1252
> Codepage from user default LCID:    1252
> Codepage from user default UI LCID: 1252
>
> Note that the <utf8:activeCodePage>UTF-8</utf8:activeCodePage> setting in the 
> application manifest changes the results of the GetACP() and GetOEMCP() calls 
> but not the GetConsoleCP() call.
This is really confusing. I'm glad you are gathering empirical evidence
of how it works. :-)

> I wrote another test program, and the argument strings passed into the 
> main(int argc, char** argv) function are converted to UTF-8 if the 
> <utf8:activeCodePage>UTF-8</utf8:activeCodePage> setting is there in the 
> application manifest whereas the argument strings passed into the main (int 
> argc, char** argv) function are converted to the ANSI codepage (which is 
> usually code page 1252 on US English systems) if the 
> <utf8:activeCodePage>UTF-8</utf8:activeCodePage> setting is there in the 
> UTF-8 manifest.

I'm not sure I understand this. What is the difference between "the
application manifest" and "the UTF-8 manifest"?

/Magnus

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