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Created May 9, 2026 12:50
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Setting language in Qt Creator on macOS with Homebrew
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qt-creator-language-homebrew.md

Setting Qt Creator language on macOS with Homebrew

On macOS, the C++ IDE "Qt Creator" can be installed using Homebrew. This is simpler than fetching and installing the complete Qt for Open Source Use environment. The updates are also managed with the rest of Homebrew.

The installation command is:

brew install qt-creator

However, for some reason, there is an issue when setting the UI language in Qt Creator. This has been seen in Qt Creator 19 but may apply to other versions as well.

Let's assume that the macOS system language is French. By default, Qt Creator uses the system language and uses French in its UI. Because English is a more convenient language for programmers, you want to set the Qt Creator UI in English. Open Qt Creator settings or "Preferences", select "Environment", change the "Language" to English, restart Qt Creator.

And the language is still French, or the default system language, whatever it is.

This is likely a defect in Qt Creator.

To solve this, exit Qt Creator and enter the following command in a terminal:

defaults write org.qt-project.qtcreator AppleLanguages '("en-US")'

Start Qt Creator. The UI is in English.

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