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Sergio Ramos
Asked: 2020-10-12 13:54:05 +0800 CST 2020-10-12 13:54:05 +0800 CST

a universal character name specifies an invalid character with QT

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Hi, I'm trying to show the unicode keys to learn more about it. The char contains the unicode as follows '\u0041'. It is a QString of the following "\u0041" that I convert to char '\u0041'.Code:

char myChar = s[0].toLatin1(); // lo convierto en char

But when I put the code in the case:

 switch (myChar){
            // 
            case '\u0001': qDebug() << "aprendiendo";break;
            default:break;
        }

This is the error I get: a universal character name specifies an invalid character

So it is impossible to display a unicode with a char, which code should I use. I want to learn to show it with switch not with if.

c++

1 Answers

  1. Best Answer

    Utf16 is for 2 bytes i.e. 16 bits while char is for 1 byte i.e. 8 bits. So what is the easiest way for me? I use wchar_t which is for unicode , that is to say a character that uses unicode so I define it like this:

    wchar_t myChar = s[0].unicode();

    So what I do is the following, in the switch I convert it to char so that it evaluates it and in case I use the character in unicode format:

    switch ((char)myChar){
            // Number keys
            case '\u00C1': qDebug() << "0";break;
            default:break;
        }

    There are other easier ways but this one works just the same.

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