Set Qt default encoding to UTF-8

Question

In my Qt application my source code files are encoded as UTF-8. For the following code...

QMessageBox::critical(this, "Nepoznata pogreška", "Dogodila se nepoznata pogreška! Želite li zatvoriti ovaj program ?", QMessageBox::Yes, QMessageBox::No);

...when I show that message box, the character "š" wouldn't be displayed as "š", but as something strange. This is because Qt converts all C-strings as if they are encoded using LATIN-1. To solve this I've been using:

QMessageBox::critical(this, QString::fromUtf8("Nepoznata pogreška"), QString::fromUtf8("Dogodila se nepoznata pogreška! Želite li zatvoriti ovaj program ?"), QMessageBox::Yes, QMessageBox::No);

Is there a way to get rid of all the calls to QString::fromUtf8()?

http://stackoverflow.com/questions/29485602/qt-convert-unicode-entites — trante, Apr 07 '15 at 10:13

Samuel Harmer · Accepted Answer · 2015-04-30T09:49:23.373

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Have you tried using QTextCodec::setCodecForCStrings(QTextCodec::codecForName("UTF-8"))?

edited Apr 30 '15 at 09:49

answered Jan 02 '12 at 21:55

Samuel Harmer

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Huh, feeling stupid right now :D I didn't know that it exists ;) Thanks :) – xx77aBs Jan 02 '12 at 22:18
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Don't suppose something like this can be done for qt5? Seems setCodecForCStrings has been removed... – hanetzer Aug 07 '14 at 03:18
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I'm afraid I can't answer for sure as I'm not working on anything which uses Qt anymore. My guess would be that Qt5 assumes all source files are UTF-8 encoded (rather than Latin-1) which would explain why they removed this. If you're having a similar problem to this then all I would just is to check all your source files are UTF-8 encoded using your favourite programmer's text editor (e.g. Notepad++)? – Samuel Harmer Sep 24 '14 at 12:18

score 3 · Answer 2 · edited Apr 19 '18 at 14:24

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setCodecForCStrings() had been deprecated. Try instead,

QTextCodec::setCodecForLocale(QTextCodec::codecForName("UTF-8"));

It worked for me.

edited Apr 19 '18 at 14:24

Mohammad Kanan

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answered Apr 19 '18 at 11:46

Anupam Srivastava

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score 0 · Answer 3 · edited Dec 20 '16 at 19:58

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Regarding the "guess" that "Qt5 assumes all source files are UTF-8 encoded": Thiago Macieira explains the decision made by Qt's developers here.

The assumption can be disabled with QT_NO_CAST_FROM_ASCII according to the documentation.

edited Dec 20 '16 at 19:58

Samuel Harmer

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answered May 30 '16 at 15:10

Peter Gulutzan

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Set Qt default encoding to UTF-8

3 Answers3

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