Qt Quick I18N

When you run the example application, the QML runtime automatically loads a translation from the i18n subdirectory of the directory that contains the main .qml file, based on the system language.

Marking Text as Translatable

In the qml-i18n.qml file, use the qsTr command to mark UI text as translatable:

         Text {
             text: qsTr("Hello")

Enabling Translation

In the main.cpp file, use QQmlApplicationEngine to automatically load translation files from a subdirectory called i18n in the directory that contains the main QML file:

 #include <QQmlApplicationEngine>

 int main(int argc, char *argv[])
 {
     QGuiApplication app(argc, argv);
     QQmlApplicationEngine engine;

The translation file names in the i18n subdirectory must have the prefix qml_. For example, qml_en_AU.ts.

Creating Translation Files

Add the LinguistTools module as a value of the find_package command in the CMakeLists.txt file:

 find_package(Qt6 REQUIRED COMPONENTS Core Gui Quick Qml LinguistTools)

Define the translation files to generate in the qt_add_translations command:

 qt_add_translations(qmli18n
     RESOURCE_PREFIX /qt/qml/translated/i18n
     TS_FILE_BASE qml
     TS_FILE_DIR i18n
 )

Build the application to generate TS and QM files.

Adding Translations

To create translations for new languages, copy i18n/base.ts to i18n/qml_<lang>.ts. You can use Qt Linguist to translate the strings.

Example project @ code.qt.io