Public Class Form1
    Private WithEvents t As New Timer
 
    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As _
      System.EventArgs) Handles MyBase.Load
        t.Start()
    End Sub
 
    Private Sub t_Tick(ByVal sender As Object, ByVal e As System.EventArgs) _
      Handles t.Tick
        Dim ctr As Control = GetChildAtPoint(Me.PointToClient( _
        Control.MousePosition))
        If Control.MouseButtons = Windows.Forms.MouseButtons.Left Then
            If Not ctr Is Nothing Then
                Me.Text = ctr.Name & ctr.PointToClient( _
                  Control.MousePosition).ToString
            End If
        End If
    End Sub
End Class