Autocad 2012:Application ERROR: SSGET "pt" expects 1 or 2 points

[Anonymous]

use SelectCrossingPolygon trigger the error.

my code:

 Point3dCollection lst = new Point3dCollection();
                PromptPointOptions ppo = new PromptPointOptions("select center point");
                PromptPointResult ppr = ed.GetPoint(ppo);
                if (ppr.Status != PromptStatus.OK) return;
                Point3d pt = ppr.Value;
                Point3d pt1 = new Point3d(pt.X - 1000, pt.Y - 1000, pt.Z),
                    pt2 = new Point3d(pt.X + 1000, pt.Y - 1000, pt.Z),
                    pt3 = new Point3d(pt.X + 1000, pt.Y + 1000, pt.Z),
                    pt4 = new Point3d(pt.X - 1000, pt.Y + 1000, pt.Z);
                TypedValue[] tv = new TypedValue[4];
                PromptEntityOptions peo = new PromptEntityOptions("select dbtext");
                PromptEntityResult per = ed.GetEntity(peo);
                if (per.Status != PromptStatus.OK) return;
                string dimLayer = "";
                using (Transaction tr = doc.TransactionManager.StartTransaction())
                {
                    Entity ent = tr.GetObject(per.ObjectId, OpenMode.ForRead) as Entity;
                    dimLayer = ent.Layer;
                    tr.Commit();
                }
                tv.SetValue(new TypedValue((int)DxfCode.Operator, "<and"), 0);
                tv.SetValue(new TypedValue((int)DxfCode.Start, "TEXT"), 1);
                tv.SetValue(new TypedValue((int)DxfCode.LayerName, dimLayer), 2);
                tv.SetValue(new TypedValue((int)DxfCode.Operator, "and>"), 3);
                SelectionFilter filter = new SelectionFilter(tv);
                PromptSelectionResult res;
                res = ed.SelectCrossingPolygon(lst, filter);
                ed.WriteMessage("LayerName:" + dimLayer);
                if (res.Status != PromptStatus.OK) return;
                ed.WriteMessage(res.Status.ToString());
                ObjectId[] ids = res.Value.GetObjectIds();
                string result = "";
                using (Transaction tr = doc.TransactionManager.StartTransaction())
                {
                    foreach (ObjectId id in ids)
                    {

                        DBObject obj = tr.GetObject(id, OpenMode.ForRead);
                        DBText text = obj as DBText;
                        result +=","+ text.TextString;

                    }
                    result = result.Trim(',');
                    tr.Commit();
                }
                ed.WriteMessage(result);

SSGET is the Lisp code.My code is not Lisp, why it raises the  error?

[Alexander.Rivilis · Accepted solution]

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@风过水无痕 wrote:

use SelectCrossingPolygon trigger the error.

SSGET is the Lisp code.My code is not Lisp, why it raises the  error?

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Because Editor.SelectCrossingPolygon is wrapper for acedSSGet (ObjectARX analog of (ssget) in AutoLisp)

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@风过水无痕 wrote:

use SelectCrossingPolygon trigger the error.

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You pass lst parameter to SelectCrossingPolygon, but lst is a empty collection

[Anonymous]

thank you very much,@Alexander Rivilis .I had forget to add point to lst.