void BasicControlPoint_GiveFeedback(object sender, GiveFeedbackEventArgs e)
{
if (mActiveDrag == null)
{
mActiveDrag = new SmartLineSegment(mHost);
}
if (mlastDDEvent != mDDCount)
{
mlastDDEvent = mDDCount;
mActiveDrag.EraseLast();
}
mActiveDrag.A = Parent.PointToScreen(this.Location);
mActiveDrag.B = new Point(MousePosition.X, MousePosition.Y);
mHost.QueueDirty();
}
