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Private Declare Function SetWindowRgn Lib "user32" (ByVal hWnd As Long, ByVal hRgn As Long, ByVal bRedraw As Boolean) As Long
Private Declare Function CreateEllipticRgn Lib "gdi32" (ByVal X1 As Long, ByVal Y1 As Long, ByVal X2 As Long, ByVal Y2 As Long) As Long
Private Declare Function DeleteObject Lib "gdi32" (ByVal hObject As Long) As Long


Private Sub Command1_Click()
Dim h As Long
Dim hCl As Long, hC As Long
h = Picture1.hWnd
hC = CreateEllipticRgn(40, 50, 200, 210)
If hC <> 0 Then
SetWindowRgn h, hC, True
End If
DeleteObject hC
End Sub


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