case WM_COMMAND:

           switch (wParam) {

           case IDD_CONNECT:          /* 按下连接按钮 */

           case IDM_START:        /* 选择了Start菜单项 */

              run_cancelled = FALSE;

              /* 不能重入 */

              if (running){

                  MessageBox(hOurWnd,"Shout is already running !",