I just downloaded and installed Qt Creator 1.3.1 on my English Windows 7 system from the english download site at http://qt.nokia.com/downloads Apparently, however, the UI of Qt Creator is in German language, although the help files are in English.
From the FAQ at http://www.qt.gitorious.org/qt-creator/pages/FrequentlyAskedQuestions I found the answer
Qt Creator uses the language setting of the system it runs on. On Linux systems you can also override that language by setting the LANG environment variable prior to starting Qt Creator, e.g. on the command line LANG=de ./qtcreator will run Qt Creator with german interface.
This, however, is apparently not correct, as I have an English Windows, and as system locale I have "English (United Kingdom)" set. Possibly Qt Creator interprets mistakenly the Windows settings for "current location", which I have set to "Germany" to mean that German would also be my language. However, changing that value had apparently no effect (maybe it should have been done before installing Qt Creator).
Is there any way to change the UI language of Qt creator to English after installing it, preferably without adjusting global system settings?
To create a . ui file go to File -> New File or Project... In the window that appears select Qt under Files and Classes on the left, then select Qt Designer Form on the right. You'll notice the icon has "ui" on it, showing the type of file you're creating.
To switch themes, select Edit > Preferences > Environment, and then select a theme in the Theme field. You can use the Qt Creator text and code editors with your favorite color scheme that defines how code elements are highlighted and which background color is used.
On Windows in general, the files are located in %APPDATA%\QtProject and %LOCALAPPDATA%\QtProject .
Qt Creator is just an IDE used to build QT applications; both Qt Widgets and Qt Quick can be composed. When writing Qt Widgets applications you can edit your GUI in Qt Designer but in case of Qt Quick applications you use Qt Quick Designer, both integrated into Qt Creator.
on qt Creator, go to tools->options->environnement>general
I managed to modify the language setting without reinstalling by adding an environment variable LANG with the value en_US (right click on "Computer", "Properties", "Advanced system settings", "Environment variables" on Windows 7).
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