"Data transfer in progress.\nStop transfer first.",

                     "WndProc()", MB_OK | MB_APPLMODAL|MB_ICONINFORMATION);

                  break; /* 一个套接口正处于阻塞状态 */

              }

              _free((char NEAR *) lpmyWSAData);

              EndDialog(hOurDlg, TRUE) ; /* 退出 */

              break;