1. both's shutting down button may the same size? (P1~P2)
2. if must change a control row direction,
which kind of editor frame should use? (P3)
Requests master help to answer, thanks ~
Modal and modeless dialogs have different title bars and close buttons by design; there is no way to change that. You can set the 'Title Bar' property to false and make your own title bar and close button, but I do not recommend that except in very unusual situations.
I did not understand the your second question.