Serge Camille edited this page Aug 24, 2015 · 1 revision
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The SimulationCraft GUI can be localized to specific languages. This is a small how-to if you want to contribute to that effort.


  • SimulationCraft source code from git
  • A QT installation. See HowToBuild on how to install QT for your platform.

Adding a new Language / Translation File (.ts)

  1. Open simcqt.pro with QT Creator
  2. Edit simcqt.pro and add a new translation file to TRANSLATIONS. For example, to add a German translation we add a ´locale/sc_de.ts´ file.
  3. In QT Creator, run Extras -> Extern -> Linguist -> update translation (lupdate). This creates or updates a language translation file (.ts).
  4. If the language is new, edit qt/sc_OptionsTab.cpp and add the new language in the GUI Localization array, incrementing the index too
  5. For example, if you're adding a french translation:
globalsLayout_left -> addRow( tr( "GUI Localization" ),     choice.gui_localization = createChoice( 5, "auto", "en", "de", "zh", "it" ) );
// Becomes:
globalsLayout_left -> addRow( tr( "GUI Localization" ),     choice.gui_localization = createChoice( 6, "auto", "en", "de", "zh", "it", "fr" ) );
// Notice the 5 turning to 6, to match the new array size 

Doing the translation

  1. In your QT bin directory, start linguist.exe ( or similar ).
  2. Open the desired translation file from <simc-source-dir>/locale
  3. Add or update the translations. Save everything.

Exporting a translation file

For a translation file to be used in the GUI, it needs to be exported from a .ts file to a .qm file.

This can be done again in QTCreator under Extras -> Extern -> Linguist -> release translation (lrelease )

Testing your translation

When building SimC GUI in debug mode, you'll get debug messages in the console you are running it. You should get a line

[Localization]: Trying to load local file from: <path>/sc_<lang>.qm

Now just ensure that your exported .qm file is in the correct location and launch SimC again.