public partial class UserControl1 : UserControl
{
 public UserControl1 ( )
 {
  InitializeComponent();
 }
 
 bool printing;
 bool donePrinting;
 
 /// <summary>
 /// synchronizes our painting invariant encapsulated
 /// in <i>printing</i> and <i>donePrinting</i>
 /// </summary>
 object paintLock = new Object();
 
 const int WM_PRINT = 0x317;
 
 protected override void WndProc(ref Message m)
 {
  if (m.Msg == WM_PRINT)
  {
   lock (paintLock)
   {
    donePrinting = false;
    printing = true;
   }
  }
  base.WndProc(ref m);
 }
 
 protected override void OnPaint(PaintEventArgs e)
 {
  lock (paintLock)
  {
   if (printing)
   {
    Control[] controls = new Control[this.Controls.Count];
    this.Controls.CopyTo(controls, 0);
 
    foreach (Control c in controls)
     c.BringToFront();
   }
 
   base.OnPaint(e);
 
   if (printing)
   {
    Control[] controls = new Control[this.Controls.Count];
    this.Controls.CopyTo(controls, 0);
 
    for (int i = controls.Length - 1; i >= 0; i--)
    {
     controls[ i ].BringToFront();
    }
    if (donePrinting)
    {
     printing = false;
     donePrinting = false;
    }
    else
    {
     donePrinting = true;
    }
   }
  }
 }
}