+ @style{wxICON_AUTH_NEEDED}
+ Displays an authentication needed symbol. This style is only supported
+ for message dialogs under wxMSW when a task dialog is used to implement
+ them (i.e. when running under Windows Vista or later). In other cases
+ the default icon selection logic will be used. Note this can be
+ combined with other styles to provide a fallback. For instance, using
+ wxICON_AUTH_NEEDED | wxICON_QUESTION will show a shield symbol on
+ Windows Vista or above and a question symbol on other platforms.
+ Available since wxWidgets 2.9.5