Unable to input Chinese (Chinese characters) ?

Jonix King

Unable to input Chinese (Chinese characters) ?
How to solve it?

SGaist

Hi and welcome to devnet,

You might want to give more details about your situation.

lorn.potter

Qt for WebAssembly currently does not support using local (system) fonts.
https://bugreports.qt.io/browse/QTBUG-81736

You can add fonts to a resource file or download the fonts into the platform sandbox and then use
QFontDatabase::addApplicationFont or
QFontDatabase::addApplicationFontFromData(b) to load the font.

You can then pick your font from the font chooser.

That part would work. Whether it will display correctly and be able to actually input might be a hit and miss right now. I have not been able to test font handling lately.

Jonix King

@lorn-potter Thank you very much.
I know how to display Chinese characters normally：

    int fontId = QFontDatabase::addApplicationFont(QStringLiteral(":/fonts/msyh.ttf"));
    QStringList fontFamilies = QFontDatabase::applicationFontFamilies(fontId);
    if ( fontFamilies.size() >0 )
    {
        QFont font;
        font.setFamily(fontFamilies[0]);
        app.setFont(font);
    }

But ...
Just can't input Chinese characters
The problem made it impossible for me to start Chinese software. @_@

jineter

@Jonix-King 解决了吗？不能输入的问题点在哪里？是否可以通过修改qt源代码的方式进行支持？

wenqing zhong

what do you mean "can't input Chinese characters"?
Cannot input chinese words when run in web-browser? I never meet that situation.
Cannot input chinese words in QT creator linux? May be, but you can find solution in the network. In windows, never heard of such problem.

wenqing zhong

No, I am wrong! that is really a fatal problem. Line edit in wasm can only input english and number, but not Chinese characters. Now I can only paste the Chinese words to input widget. That is realy a nightmare.

Jonix King

@jineter 已知唯一解决方案是在WASM中自己做一个输入法。已经有人搞出了虚拟键盘+拼音输入，据说可以满足需求。由于不肯开源只看到了截图。em编译器的说明中没有看到输入法限制方面的说明，无法判断是否是em的原因所致；但感觉Qt自身原因的可能性更大一些。

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