Why can't it display Chinese?

[Qingshui Kong]

Hello everyone,
Could somebody help me?
I create a QMainWindow. I set 'windowTitle' to some Chinese in the Designer. It works.
But if I QTextCodec::setCodecForLocale();, it doesn't work.
Please give me some advice.
Thank you in advance.

[jsulm]

@Qingshui-Kong said in Why can't it display Chinese?:

Please give me some advice

Please provide more information/show the code...

[Qingshui Kong]

@jsulm

If I change the code to

The result changes to

[Qingshui Kong]

Could somebody give me some advice?

[Qingshui Kong]

Nobody would like to give me any advice?
I think maybe I should give up.

[jsulm]

@Qingshui-Kong Did you try to set window title using https://doc.qt.io/qt-5/qwidget.html#windowTitle-prop to see whether that makes a difference?

[Qingshui Kong]

@jsulm
Thank you very much.
But I think it doesn't work.

If I don't set code for locale

The result is

If I set code for locale

The result changes to

[jsulm]

@Qingshui-Kong Why do you use fromLocal8Bit?! Chinese can't be represented as 8bit encoding. Remove fromLocal8Bit and make sure your source code files are stored as UTF-8 (should be default in QtCreator).

[Qingshui Kong]

@jsulm
Thanks a lot.
My source code files are stored as GBK. I forgot the reason why I didn't use UTF-8. But there must be some problems. But I can't remember it.

After I store source code files as UTF-8, if I don't set code for locale, it works. If I set code for locale, it still dosen't work.

[jsulm]

@Qingshui-Kong Did you remove fromLocal8Bit?

[Bonnie]

@Qingshui-Kong
Try this macro QStringLiteral like:

setWindowTitle(QStringLiteral("小工具"));

It helps me a lot.

[Qingshui Kong]

@jsulm
Yes, I did.

[Qingshui Kong]

@Bonnie
Thanks.
I will try it.