[Bug 45339] New: Codepage 54936 (GB18030) not supported

https://bugs.winehq.org/show_bug.cgi?id=45339

Bug ID: 45339
           Summary: Codepage 54936 (GB18030) not supported
           Product: Wine
           Version: unspecified
          Hardware: Other
                OS: other
            Status: UNCONFIRMED
          Severity: major
          Priority: P2
         Component: kernel32
          Assignee: [e-mail]
          Reporter: [e-mail]

There is no gb18030 codepage file in wine/libs/port directory.

So in Wine all versions up to 3.10:

IsValidCodePage(54936) returns false;
MultiByteToWideChar(54936, ...) does not work;

But in Windows XP+:

IsValidCodePage(54936) returns true;
MultiByteToWideChar(54936, ...) does work;

[Bug 45339] Codepage 54936 (GB18030) not supported

https://bugs.winehq.org/show_bug.cgi?id=45339

Linda  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
            Version|unspecified                 |3.10

[Bug 45339] Codepage 54936 (GB18030) not supported

https://bugs.winehq.org/show_bug.cgi?id=45339

Fabian Maurer  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |[e-mail]

[Bug 45339] Codepage 54936 (GB18030) not supported

https://bugs.winehq.org/show_bug.cgi?id=45339

Zhiyi Zhang  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |[e-mail]

--- Comment #1 from Zhiyi Zhang  ---
Which application require this? Could you use UTF-8 or GB2312 instead?

[Bug 45339] Codepage 54936 (GB18030) not supported

https://bugs.winehq.org/show_bug.cgi?id=45339

--- Comment #2 from Linda  ---
(In reply to Zhiyi Zhang from comment #1)
> Which application require this? Could you use UTF-8 or GB2312 instead?

No. I'm a user so please don't ask me to use which codepage. You should ask
developer. As far as I know, there is no way to use UTF-8 or GB2312 in some
applications.

GB18030 is a Chinese national compulsory standard so many applications use it
and then require this codepage. For example:
GB18030 converter
GB18030 word processor
Non-unicode ANSI programs processing or displaying unicode characters
Old games displaying unicode characters
etc.

What we have to do is to make them binary compatible. That's indeed the goal of
Wine project.

Here is a small program modified from ReactOS and in daily use by our team to
test:
http://dp.r2.lindasc.com/r2/GB18030notepad-6.1.7z
But someone complains it cannot run normally on macOS through wine.