private void SetAutoHideWindowParent()
{
Control parent;
if (this.DocumentStyle == DocumentStyle.DockingMdi ||
this.DocumentStyle == DocumentStyle.SystemMdi)
parent = Parent;
else
parent = this;
if (this.AutoHideWindow.Parent != parent)
{
this.AutoHideWindow.Parent = parent;
this.AutoHideWindow.BringToFront();
}
}