change language in programm

[Michelle02283]

Hello, I need to translate the text on the StandardButtons in my programm into German, but I don´t know how to do it.
I only need the file from qt.

[J.Hilk]

@Michelle02283
you should be able to find the apropriate *.qm files on your system:
Path/to/Qt/installation/Qt/Version(e.g.5.10.1)/Libary(e.g.mingw53_32)/translations

[Michelle02283]

@J.Hilk I found them but which one do I need?

[Michelle02283]

@J.Hilk and how can I use them in my programm?

[J.Hilk]

@Michelle02283
really depends on what part of qt you're using.

The core part of the library should be with qt_(ISO 639-1-languagecode).qm covered, if you added a module in your pro file, fro example QT += serialport than you should also add the qtserialport_(ISO 639-1-languagecode).qm

[Pablo J. Rogina]

@Michelle02283 look at documentation here and examples here and here. You can translate your application's strings and you can use Qt's provided translations for the framework's strings.

[J.Hilk]

@Michelle02283 with QTranslator of course

for example:

myTranslator = new QTranslator(this);
qtTranslator= new QTranslator(this);

myTranslator->load("myTranslation_de", myTranslationPathString);
qtTranslator->load("qt_de", qtTranslationPathString);

qApp->installTranslator(myTranslator);
qApp->installTranslator(qtTranslator);

[Michelle02283]

@J.Hilk I added this lines to my main.cpp. If I open a QMainWindow the StandardButton are not translated. Do I have to add some code into this class also?

[J.Hilk]

@Michelle02283 you should really read through the links @Pablo-J-Rogina gave you. My example is incomplete.

For example you'll have to signal the UI to retranslate, if you apply the QTranslator after the ui-setup

[mrdebug]

Please download this
https://www.linux-apps.com/p/1127666
and have a look at the end of the file .pro, at the file mail.cpp and then in qtcreator tools -> external -> linguistics.