Is there a quick way to get the control that’s under the mouse?

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This code doesn’t make a lot of sense, but it does avoid traversing the Controls collections:

[System.Runtime.InteropServices.DllImport("user32.dll")]
private static extern IntPtr WindowFromPoint(Point pnt);

private void Form1_MouseMove(object sender, MouseEventArgs e) {
  IntPtr hWnd = WindowFromPoint(Control.MousePosition);
  if (hWnd != IntPtr.Zero) {
    Control ctl = Control.FromHandle(hWnd);
    if (ctl != null) label1.Text = ctl.Name;
  }
}

private void button1_Click(object sender, EventArgs e) {
  // Need to capture to see mouse move messages...
  this.Capture = true;
}

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