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[fukuta]

ViewDeactivateEvent などで制御する必要はありません。

Code:

{do
    def v = {View
                || Replace {Frame} with your code.
                {Frame width = 8cm, height = 8cm},
                visibility = "normal",
                {on e:WindowClose do
                    {exit}
                }
            }
    {v.set-topmost true}
}