public: class QLatin1String __thiscall QLocalePrivate::languageCode(void)const

Mangled name

?languageCode@QLocalePrivate@@QBE?AVQLatin1String@@XZ

Exported by

size	filename	version
5327960	Qt5Core.dll	5.13.2.0
4874240	Qt5Core.dll	5.11.2.0