Public Structure SWindow
        Dim xMin As Integer
        Dim xMax As Integer
        Dim xStep As Integer
        Dim yMin As Integer
        Dim yMax As Integer
        Dim yStep As Integer
    End Structure
 
    Private t_Window As SWindow
 
    Public Property Window() As SWindow
        Get
            Return t_Window
        End Get
        Set(ByVal Value As SWindow)
            t_Window = Value
        End Set
    End Property