private void btnTestCompound_Click(object sender, EventArgs e)
{
List <Shape> shapes = new List <Shape>();
for (int i = 0; i < 5; ++i)
{
var l = new Line(new PointF(10, 100 + i * 8), new PointF(245, 100 + i * 8));
shapes.Add(l);
}
var b = new Box(new PointF(10, 200), new PointF(230, 220));
shapes.Add(b);
b.TopLeft = new PointF(-10, 200);
b.BottomRight = new PointF(245, 245);
var comp = new CompoundShape();
comp.AddSubShapes(shapes.ToArray());
comp.Angle = hsbAngle.Value;
vbxImage.AddShape(comp);
compShape = comp;
}