When naming labels etc. in a wxFormBuilder designer, all generated python code is then generated without I18N in mind. E.g., plain string u"Label text" instead of translatable string _(u"Label text").
Can the generation of translatable strings be turned on somehow?
You need to activate i18n in wxFormBuilder in the settings for the project. You can find these settings by clicking on the top item of the Object Tree. Then you see in the Object Properties for the project a checkbox called “internationalize”.