public void StartControlSkin()
{
CalcRect();
AssignHandle(vsbBase.Handle);
vsbBase.SizeChanged += new EventHandler(vsbBase_SizeChanged);
vsbBase.LocationChanged += new EventHandler(vsbBase_LocationChanged);
vsbBase.VisibleChanged += new EventHandler(vsbBase_VisibleChanged);
//构造一个假的滚动条
FakeScrollBar = new Control();
vsbBase.Parent.Controls.Add(FakeScrollBar);
FakeScrollBar.Location = vsbBase.Location;
FakeScrollBar.Size = vsbBase.Size;
FakeScrollBar.Visible = vsbBase.Visible;
FakeScrollBar.Paint += new PaintEventHandler(FakeScrollBar_Paint);
FakeScrollBar.BringToFront();
vsbBase.SendToBack();
mp = new MessagePortal(FakeScrollBar.Handle, vsbBase.Handle);
mp.OpenPortal();
}