Private Sub frmMain_SizeChanged(ByVal sender As Object, ByVal e As _
      System.EventArgs) Handles MyBase.SizeChanged
        If WindowState = FormWindowState.Minimized Then
            ShowInTaskbar = False
            NotifyIcon1.Visible = True
        Else
            ShowInTaskbar = True
            NotifyIcon1.Visible = False
        End If
    End Sub