C# 给GetEntity()添加功能

forever111 · 发表于 2020-11-26 00:09:00

GetEntity()方法在点选图元时返回(objid(点选坐标值))，在选择空白处时提示“未选择对象”。
能不能改成选择空白处时返回点选坐标点。
鼠标点击后有图元返回 (objid(x,y,0));
无图元返回 (x,y,0);

雨的节奏 · 发表于 2020-11-26 11:21:00

lastpoint
...

问号兄233 · 发表于 2020-11-26 11:22:00

坐等高手出手。

Civil3D · 发表于 2020-11-28 17:05:00

先用getpoint获得点坐标，再用SelectAtPoint判断
DBTransaction 是采用了NFOX类库
      [CommandMethod("Test_GetEntity1")]
      public void Test_GetEntity1()
      {
         Document doc = Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument;
         Database db = doc.Database;
         Editor ed = doc.Editor;
         using (DBTransaction tr = new DBTransaction())
         {
            PromptSelectionResult PSR1;

            PromptPointOptions PPO1 = new PromptPointOptions("\n请指定点: ");
            PromptPointResult PPR1 = doc.Editor.GetPoint(PPO1);
            if (PPR1.Status != PromptStatus.OK)
                  return;
            PSR1 = ed.SelectAtPoint(PPR1.Value);
            if (PSR1.Status != PromptStatus.OK)
            {
                  ed.WriteMessage("\n "+ PPR1.Value);
            }
            else
            {
                  SelectionSet SS1 = PSR1.Value;
                  foreach (SelectedObject SO in SS1)
                  {
                     ed.WriteMessage("\n "+ SO.ObjectId+","+ PPR1.Value);
                  }
            }
         }
      }

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