IIRC it is not possible, Tk::Dialog and Tk::DialogBox only want a simple string. You may need to build your own window if you want to allow for return in the returned string. Tk::DialogBox always sets the first element of the array passed in -buttons as the default if none is specified.

Alternatively, Tk::Dialog does not mention a default setting if one is not specified, maybe it only binds return if specifically asked to?

Try it :)

jdtoronto