找查图面上的文字

• 回答：

  private void FindText(string str)
          {            // 创建选择集对象
              MxDrawSelectionSet ss = new MxDrawSelectionSet();            // 创建过滤对象.
              MxDrawResbuf spFilte = new MxDrawResbuf();   
              // 把文字对象，当着过滤条件.
              spFilte.AddStringEx("TEXT,MTEXT", 5020);            // 得到图上，所有文字对象.
              ss.Select2(MCAD_McSelect.mcSelectionSetAll, null, null, null, spFilte);            // 遍历每个文字.
              bool bFind = false;            for (int i = 0; i < ss.Count; i++)
              {
                  MxDrawEntity ent = ss.Item(i);                if (ent == null)                    continue;                if (ent.ObjectName == "McDbText")
                  {                    // 是一个文字                    MxDrawText text = (MxDrawText)ent;
                      string sTxt = text.TextString;                    if (sTxt == str)
                      {                        // 找到把文字放到视区中间.
                          axMxDrawX1.PutEntityInView(ent.ObjectID, 300);
  
  
                          var dLen = axMxDrawX1.ViewLongToDocCoord(80);                        // 绘制一个标记圆.
                          axMxDrawX1.DrawVectorCircle(text.Position.x,
                          text.Position.y,
                          dLen, 65280);
                          bFind = true;
                      }
                  }                else if (ent.ObjectName == "McDbMText")
                  {                    // 找到一个多行文字
                      MxDrawResbuf param = new MxDrawResbuf();
                      param.AddObjectId(ent.ObjectID);
                      MxDrawMText mtext = (MxDrawMText)ent;                    // 得到多行文字中的，文字内容.
                      MxDrawResbuf ret = (MxDrawResbuf)axMxDrawX1.CallEx("Mx_GetMTextContent", param);                    if (ret.AtString(0) == "Ok")
                      {                        if (ret.AtString(1) == str)
                          {                            // 把文字放到视区.
                              axMxDrawX1.PutEntityInView(ent.ObjectID, 300);
  
                              var dLen = axMxDrawX1.ViewLongToDocCoord(80);                            // 绘制一个标记圆.
                              axMxDrawX1.DrawVectorCircle(mtext.Location.x,
                                  mtext.Location.y,
                                  dLen, 65280);
                              bFind = true;                            break;
                          }
                      }
                  }
          
  
              }            if (bFind)
                  MessageBox.Show("找到文字");            else
                  MessageBox.Show("没有找到文字");
          }