public NExpandableShape()
{
// add a rectangle shape as base
NRectangleShape rect = new NRectangleShape(new NRectangleF(0, 0, 75, 75));
rect.DestroyShapeElements(ShapeElementsMask.All);
rect.Protection = new NAbilities(AbilitiesMask.Select | AbilitiesMask.InplaceEdit);
Shapes.AddChild(rect);
// add an expand collapse shape
NExpandCollapseCheck check = new NExpandCollapseCheck();
check.Bounds = new NRectangleF(80, 0, 12, 12);
check.Protection = new NAbilities(AbilitiesMask.Select | AbilitiesMask.InplaceEdit);
check.ResizeInAggregate = ResizeInAggregate.RepositionOnly;
Shapes.AddChild(check);
// update the model bounds with the rectangle bounds
UpdateModelBounds(rect.Transform.TransformBounds(rect.ModelBounds));
// initially it is expanded
m_bExpanded = true;
// by default the group has one dynamic port anchored to the rectangle
CreateShapeElements(ShapeElementsMask.Ports);
NDynamicPort port = new NDynamicPort(rect.UniqueId, ContentAlignment.MiddleCenter, DynamicPortGlueMode.GlueToContour);
Ports.AddChild(port);
Ports.DefaultInwardPortUniqueId = port.UniqueId;
// by default the group has one rotated bounds port anchored to the rectangle
CreateShapeElements(ShapeElementsMask.Labels);
NRotatedBoundsLabel label = new NRotatedBoundsLabel("", rect.UniqueId, new Nevron.Diagram.NMargins(10));
Labels.AddChild(label);
Labels.DefaultLabelUniqueId = label.UniqueId;
}