Public Class Form1
 
    Private Sub NotifyIcon1_Click(ByVal sender As System.Object, ByVal e As _
      System.EventArgs) Handles NotifyIcon1.Click
        Static clicked As Boolean = False
        If clicked = False Then
            Me.Hide()
            clicked = True
        Else
            Me.Show()
            clicked = False
        End If
    End Sub
End Class

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