Retrieve Unicode code points > U+FFFF from QChar

Question

I have an application that is supposed to deal with all kinds of characters and at some point display information about them. I use Qt and its inherent Unicode support in QC

Answer 1

The solution appears to lay in code that is documented but not seen much on the Web. You can get the utf-8 value in decimal form. You then apply to determine if a single QChar is large enough. In this case it is not. Then you need to create two QChar's.

uint32_t cp = 155222; // a 4-byte Japanese character 
QString str;
if(Qchar::requiresSurrogate(cp))
{
    QChar charArray[2];
    charArray[0] = QChar::highSurrogate(cp);
    charArray[1] = QChar::lowSurrogate(cp);
    str =  QString(charArray, 2);
}

The resulting QString will contain the correct information to display your supplemental utf-8 character.