I'm using Geany 1.30.1 on (German) Windows 7.
What puzzles me is, that the Geany user interface shows a mixture of English and German. The Menu (File, Edit, Search, ...) is completely in English, but the toolbar below is mostly in German, but with English interspersed (Saying "Neu", "öffnen", "Speichern", "Save All", "Zurücksetzen" (whatever this means), "Schließen", "Zurück", "Vor", "Compile", "Build", "Ausführen").
I understand that Geany uses GTK+ to present itself, and that it is a bit difficult to persuade a GTK+ Application to use a certain language. I do not understand, how I can get such a mixture of languages though.