C#

But one more question: if the content of the queues is different, at the moment of assignment, one of it will be lost, right?

q2 = new Queue( q1 ); // effectively destroys and then rebuilds q2 from q1<br />
<br />
// to maintain q2 and append q1<br />
foreach( object o in q1 )<br />
  q2.Enqueue( o ); // puts all of q1 at the end of q2

protected override CreateParams CreateParams 
{
   get
   {
      System.Windows.Forms.CreateParams param = base.CreateParams;
      //we need to prevent to control calling the vscroll or hscroll
      if (((int)WindowStyles.VSCROLL & param.Style) != 0)
      {
         param.Style -= (int)WindowStyles.VSCROLL;
      }
      if (((int)WindowStyles.HSCROLL & param.Style) != 0)
      {
         param.Style -= (int)WindowStyles.HSCROLL;
      }
      return param;
   }
}