Qt不支持Visual Studio的Unicode或Font错误 [英] Qt dont support Unicode for Visual studio or Font error

问题描述

我是新手，现在我正在学习Qt并与Visual Studio，Extended Qt VS Tool 2.4.3一起使用，我使用的是越南语文字，当我构建程序时，它的文字不错，但按钮显示特殊字符.

im beginer, and now im learning Qt and work with Visual Studio, Extension Qt VS Tool 2.4.3, I use Text is Vietnamese language and when i build program its good but button show special characters.

我已经阅读了一些有关字体错误的主题，但与该错误无关.

I have read a few topic about font errors but its not related with this error.

我的代码:

#include <QtWidgets/QApplication>
#include <QPushButton>
#include <QLabel>

int main(int argc, char *argv[])
{
        QApplication app(argc, argv);
        QPushButton nutBam; // instance 
        nutBam.setText("Nút khẩn cấp !"); //set Text button
        nutBam.show();
        return app.exec();
}

推荐答案

两个问题:

1. 在源文件中具有硬编码的unicode字符通常不是一个好主意.编辑器和编译器有时可以做正确的事.编辑者可以另存为UTF-8或Unicode.通常，编译器可以假定已读取BOM表头并切换编码.但是团队成员和源代码存储库系统经常做错事.其他人带来了不同的编辑器，源代码控制系统等，并且unicode的内容被弄乱了.它还破坏了差异工具.我已经看到它发生了太多次了.

1. It's usually not a good idea to have hardcoded unicode characters in a source file. Editors and compilers can sometimes do the right thing. Editors can save as UTF-8 or Unicode. Compilers can assume read BOM headers and switch encoding... usually. But team members and source code repository systems often do the wrong thing. Someone else comes along with a different editor, source control system, etc... and the unicode stuff gets messed up. It also breaks diffing tools as well. I've seen it happen way too many times.

Qt的QString看到您正在将8位ascii字符串传递到QString构造函数中.然后他们的编码解释规则就会生效.因此，使用unicode字符串会更好.

Qt's QString sees you are passing an 8-bit ascii string into the QString constructor. Then their encoding interpretation rules kick in. So it will do better with a unicode string.

要获得两全其美的效果，请将字符串与Unicode转义符一起存储在源代码中，但应将它作为宽字符串传递给QString构造函数:

To get the best of both worlds, store your string in source code with unicode escape characters, but pass to QString constructor as a wide string:

我使用此工具在线将您的某些字符转换为 \ uABCD转义序列.

I used this tool online to convert some of your characters to \uABCD escape sequences.

代替此:

nutBam.setText("Nút khẩn cấp !");

此:

const wchar_t* text = L"N\u00fat kh\u1ea9n c\u1ea5p !";
QString qText(text);
nutBam.setText(qText);

尽管这不再是问题，但请确保您的编辑器将源保存为ANSI或UTF-8，而不是16位unicode.

Although it's no longer an issue, make sure your editor is saving the source as ANSI or UTF-8 and not 16-bit unicode.

目前我还没有在本地安装Qt，但是以上内容可能会合并为:

I don't have Qt installed locally at the moment, but the above might consolidate down to just this:

nutBam.setText(L"N\u00fat kh\u1ea9n c\u1ea5p !");

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