this is not directly related to your problem, but you should really use itemId instead of id (and then parent.getComponent(itemId)). Otherwise you indirectly create a singleton, since each further instance would get the same dom-id.
O.k. I´ve refactored from id to itemId. Thank you for the hint I wasn´t aware of that.
But I don´t really understand that I have to use closeAction = 'hide'. The dialog is used very seldom and so I would like to destroy the window to save resources after it has been closed by the user. If I do this with all my widgets the user will run out of memory at some point.
??? don´t understand your last reply evant.
Sorry for those basic question.