아래와 같이 코딩하면 사이즈가 고정됩니다..

  public
    Procedure CreateParams(Var Params:TCreateParams); Override;
  end;

var
  fmMenuScreen: TfmMenuScreen;

Procedure  OpenMenu(AOwner:TApplication; MenuName,UserID,Password,UserName:String); Export;

implementation

{$R *.DFM}

Procedure TfmMenuScreen.CreateParams(Var Params:TCreateParams);
Begin
  Inherited CreateParams(Params);

  With Params do
    Style:= Style and not (WS_MAXIMIZEBOX or WS_SIZEBOX);
End;


From 류..