成员的完整列表，这些成员属于 AnyCAD.Foundation.SnapEngine,包括所有继承而来的类成员

Clear()	AnyCAD.Foundation.SnapEngine	virtual
DeleteSelection(ViewContext ctx)	AnyCAD.Foundation.SnapEngine	virtual
Dispose() (定义于 AnyCAD.Foundation.SnapEngine)	AnyCAD.Foundation.SnapEngine
Format(Vector3d v, ViewContext ctx)	AnyCAD.Foundation.SnapEngine	virtual
ParseCurveLength(ViewContext ctx, PickedItem item)	AnyCAD.Foundation.SnapEngine	virtual
PickEdge(ViewContext ctx, int x, int y)	AnyCAD.Foundation.SnapEngine	virtual
PickFace(ViewContext ctx, int x, int y)	AnyCAD.Foundation.SnapEngine	virtual
PickSubShape(ViewContext ctx, int x, int y, EnumShapeFilter filter)	AnyCAD.Foundation.SnapEngine	virtual
Run(ViewContext ctx, int x, int y)	AnyCAD.Foundation.SnapEngine	virtual
SnapEngine(global::System.IntPtr cPtr, bool cMemoryOwn)	AnyCAD.Foundation.SnapEngine
SnapEngine()	AnyCAD.Foundation.SnapEngine