getUserDataDir

Returns a base directory in which to access application data such as icons that is customized for a particular user.

On UNIX platforms this is determined using the mechanisms described in the XDG Base Directory Specification. In this case the directory retrieved will be XDG_DATA_HOME.

On Windows it follows XDG Base Directory Specification if XDG_DATA_HOME is defined. If XDG_DATA_HOME is undefined, the folder to use for local (as opposed to roaming) application data is used instead. See the documentation for FOLDERID_LocalAppData. Note that in this case on Windows it will be the same as what g_get_user_config_dir() returns.

The return value is cached and modifying it at runtime is not supported, as it’s not thread-safe to modify environment variables at runtime.