'Open New Project.Add Module and write down this public function on it.
Public Declare Function Ellipse Lib "gdi32" (ByVal hdc As Long, ByVal X1 As Long, ByVal Y1 As Long, ByVal X2 As Long, ByVal Y2 As Long) As Long

'Put 8 arrayed label,4 vertical scroll bar and one picture component on the form. Write down the codes below on the form.

Private Sub Form_Load()
Label1(0).Caption = "X1"
Label1(0).FontBold = True
Label1(0).FontSize = 12
Label1(1).Caption = "Y1"
Label1(1).FontBold = True
Label1(1).FontSize = 12
Label1(2).Caption = "X2"
Label1(2).FontBold = True
Label1(2).FontSize = 12
Label1(3).Caption = "Y2"
Label1(3).FontBold = True
Label1(3).FontSize = 12
Label2(0).Caption = 0
Label2(0).FontBold = True
Label2(0).FontSize = 12
Label2(1).Caption = 0
Label2(1).FontBold = True
Label2(1).FontSize = 12
Label2(2).Caption = 0
Label2(2).FontBold = True
Label2(2).FontSize = 12
Label2(3).Caption = 0
Label2(3).FontBold = True
Label2(3).FontSize = 12
VScroll1.Min = 0
VScroll1.Max = 150
VScroll2.Min = 0
VScroll2.Max = 150
VScroll3.Min = 0
VScroll3.Max = 150
VScroll4.Min = 0
VScroll4.Max = 150
End Sub

Private Sub VScroll1_Change()
Picture1.Cls
Label2(0).Caption = VScroll1.Value
t& = Ellipse(Picture1.hdc, Label2(0).Caption, Label2(1).Caption, Label2(2).Caption, Label2(3).Caption)
End Sub

Private Sub VScroll2_Change()
Picture1.Cls
Label2(1).Caption = VScroll2.Value
t& = Ellipse(Picture1.hdc, Label2(0).Caption, Label2(1).Caption, Label2(2).Caption, Label2(3).Caption)
End Sub

Private Sub VScroll3_Change()
Picture1.Cls
Label2(2).Caption = VScroll3.Value
t& = Ellipse(Picture1.hdc, Label2(0).Caption, Label2(1).Caption, Label2(2).Caption, Label2(3).Caption)
End Sub

Private Sub VScroll4_Change()
Picture1.Cls
Label2(3).Caption = VScroll4.Value
t& = Ellipse(Picture1.hdc, Label2(0).Caption, Label2(1).Caption, Label2(2).Caption, Label2(3).Caption)
End Sub