win32汇编的winsock编程中，recv函数的问题

            @@:
                ; 追加放入
                invoke    SendMessage, hRich, EM_REPLACESEL, FALSE, ebx

                invoke    ReadSockData, offset szBuff2, T_BufLen       ;<-里面是recv函数
                .if        eax==SOCKET_ERROR 
                    invoke    MessageBox,hWinMain,offset szCurrentError,offset szCaption,MB_OK
                    ret
                .endif
                lea        ebx,szBuff2
                cmp        eax,0
                jne        @B