QSettings and localized key

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Hello everyone!
How to read localized key?

For example here is the ini file app.desktop:

app.desktop:

[Destop Entry]
name=AppName
name[fr]=NomApp

To read the name key, one can do that:

QSettings setting(app.desktop)
qDebug() << setting.value("name");

But how to read the name in the localized field [fr] ?

SGaist

Hi,

AFAIK, this is usually a file that is used by the desktop environment rather than your application directly. You should rather do the translation as usual within your application.

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Thank you for your quick reply!
I need to do that because I'm writing a program to allow user create desktop shortcut:

screenshot

I want to get the application's name and description from user's locale to be displayed.

Github

ChrisW67

@push_back said in QSettings and localized key:

How to read localized key?

Same as any other:

#include <QCoreApplication>
#include <QSettings>
#include <QDebug>

int main(int argc, char **argv) {
        QCoreApplication app (argc, argv);
        QSettings setting("/tmp/test/test.ini", QSettings::NativeFormat);
        qDebug() << setting.value("Desktop Entry/name");
        qDebug() << setting.value("Desktop Entry/name[fr]");
        return 0;
}

Then the question will become, how do I determine the locale code, e.g. "fr"?

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@ChrisW67 Thank you, I found that too. I will use that!
Yes I need a way to find the locale (I think I have to look in QLocale).
I also have to deal with encoding, for example if the key name[fr] is "Système".

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I'm stuck with encoding issue:

Let be the file test.ini encoded with UTF-8

[Destop Entry]
Name=System
Name[fr]=Système

I use the code from @ChrisW67 :

#include <QCoreApplication>
#include <QSettings>
#include <QDebug>

int main(int argc, char **argv) {
        QCoreApplication app (argc, argv);
        QSettings setting("/tmp/test/test.ini", QSettings::NativeFormat);
        qDebug() << setting.value("Desktop Entry/Name");
        qDebug() << setting.value("Desktop Entry/Name[fr]");
        return 0;
}

"Système" is turned into "systÃ¨me". So it means that the string was encoded with UTF-8 (in the file test.ini) then decoded with latin1 (by the value method of QSettings). Is that correct? If yes why it behaves like this?
Note: my system uses UTF-8. I tried to use QSettings::IniFormat.

ChrisW67

In Qt 6.3, 'In line with most implementations today, QSettings will assume the INI file is utf-8 encoded. This means that keys and values will be decoded as utf-8 encoded entries and written back as utf-8.'
Also, 'Please note that this behavior is different to how QSettings behaved in versions of Qt prior to Qt 6. INI files written with Qt 5 or earlier are however fully readable by a Qt 6 based application (unless a ini codec different from utf8 had been set). But INI files written with Qt 6 will only be readable by older Qt versions if you set the "iniCodec" to a utf-8 textcodec." '

If you are using Qt5 then see QSettings::setIniCodec

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@ChrisW67 That was exactly what I was looking for!
I am indeed using Qt5, and did not notice that there is QSettings::setIniCodec.
Thanks a lot!