Converting QString from string in a file

Question

I want to set a text in a QLabel so I need to use a QString. But I read a file and the text contains accents. I tried with QString::fromUtf8() but it doesn't work.

Any idea?

string line;
QString lineTranslate;
getline(file, line);
lineTranslate = QString::fromStdString(line);
m_nomCourant->setText(QString::fromLatin1("<u><strong>Nom courant :</strong></u> ") + lineTranslate);

Desired output:

Nom courant : Requin
Nom scientifique : Carcharhinus menalopterus

Habitat : Côtier / Dans les zones coralliennes jusqu'à -30m
Famille : Carcharhinidés

Actual output:

Nom courant : Requin
Nom scientifique : Carcharhinus menalopterus

Habitat : C?tier / Dans les zones coralliennes jusqu'? -30m
Famille : Carcharhinid?s

Edit: What do you advise me to use to have a QString with several lines?

Could you include your desired and actual output in your question? — Bowdzone
– Bowdzone, Commented Apr 28, 2015 at 7:08
If you want several lines and are using html, just use <br/> — Morb
– Morb, Commented Apr 28, 2015 at 7:22
Thx Morb. But it will better if it is automatic (when the QString is too long for the QLabel for exemple). — Stalyon
– Stalyon, Commented Apr 28, 2015 at 7:26
I think this question can help you with this other problem stackoverflow.com/questions/12281396/qlabel-auto-multiple-lines — Morb
– Morb, Commented Apr 28, 2015 at 7:31

Googie · Accepted Answer · 2015-04-28 07:53:34Z

3

You need to know what encoding (charset) is used in your file. Then you will either use fromUtf8, or something else - using the QTextCodec.

Example from Qt docs:

QTextCodec *codec = QTextCodec::codecForName("Shift-JIS");
QTextDecoder *decoder = codec->makeDecoder();

QString string;
while (new_data_available()) {
    QByteArray chunk = get_new_data();
    string += decoder->toUnicode(chunk);
}
delete decoder;

answered Apr 28, 2015 at 7:53

Googie

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1 Comment

Stalyon Over a year ago

Thx for your answer. I didn't think to that. So I changed the encoding of my file to Utf8. And it works with my last code. Thx Googie.

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