如何查找文字？

• 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");
          }