Sub Example_SelectByPolygon()
    'Этот пример добавляет объекты к выбору, определяя многоугольник.
    
    Dim ssetObj As AcadSelectionSet
    Set ssetObj = ThisDrawing.SelectionSets.Add("TEST_SSET2")
     
    'Добавьте к выбору все объекты, которые лежат в пределах линии выбора 
    Dim mode As Integer
    Dim pointsArray(0 To 11) As Double
    mode = acSelectionSetFence
    pointsArray(0) = 28.2: pointsArray(1) = 17.2: pointsArray(2) = 0
    pointsArray(3) = -5: pointsArray(4) = 13: pointsArray(5) = 0
    pointsArray(6) = -3.3: pointsArray(7) = -3.6: pointsArray(8) = 0
    pointsArray(9) = 28: pointsArray(10) = -3: pointsArray(11) = 0
    
    ssetObj.SelectByPolygon mode, pointsArray
    
    'Добавьте к выбору все Круги в пределах линии выбора 
    ReDim gpCode(0 To 1) As Integer
    gpCode(0) = 0
    gpCode(1) = 10
    
    Dim pnt(0 To 2) As Double
    pnt(0) = 3: pnt(1) = 6: pnt(2) = 0
    
    ReDim dataValue(0 To 1) As Variant
    dataValue(0) = "Circle"
    dataValue(1) = pnt
    
    Dim groupCode As Variant, dataCode As Variant
    groupCode = gpCode
    dataCode = dataValue
    
    ssetObj.SelectByPolygon mode, pointsArray, groupCode, dataCode
    
End Sub