protected override void OnPaint(PaintEventArgs e)
{
// Draw the border
Graphics g = e.Graphics;
if (this.DockState == DockState.DockBottomAutoHide)
g.DrawLine(SystemPens.ControlLightLight, 0, 1, ClientRectangle.Right, 1);
else if (this.DockState == DockState.DockRightAutoHide)
g.DrawLine(SystemPens.ControlLightLight, 1, 0, 1, ClientRectangle.Bottom);
else if (this.DockState == DockState.DockTopAutoHide)
{
g.DrawLine(SystemPens.ControlDark, 0, ClientRectangle.Height - 2, ClientRectangle.Right, ClientRectangle.Height - 2);
g.DrawLine(SystemPens.ControlDarkDark, 0, ClientRectangle.Height - 1, ClientRectangle.Right, ClientRectangle.Height - 1);
}
else if (this.DockState == DockState.DockLeftAutoHide)
{
g.DrawLine(SystemPens.ControlDark, ClientRectangle.Width - 2, 0, ClientRectangle.Width - 2, ClientRectangle.Bottom);
g.DrawLine(SystemPens.ControlDarkDark, ClientRectangle.Width - 1, 0, ClientRectangle.Width - 1, ClientRectangle.Bottom);
}
base.OnPaint(e);
}
