Re: New Essay: Serial Ports

From:

"tio" <tomjey@wp.pl>

Newsgroups:

microsoft.public.vc.mfc

Date:

28 Jul 2006 07:58:17 -0700

Message-ID:

<1154098697.486292.301740@p79g2000cwp.googlegroups.com>

Ok but I have other problem

////////////Joe Newcomer's code
BOOL ok = ::ReadFile(parms->hCom, buffer, MAX_BUFFER_SIZE - 1,
&bytesRead, &ovl);
        if(!ok)
           { /* error */
            DWORD err = ::GetLastError();
            if(err != ERROR_IO_PENDING)
               { /* read error */
                shutdown = err;
                running = FALSE;
                continue;
               } /* read error */
            // otherwise, it is ERROR_IO_PENDING
            DWORD result = ::WaitForMultipleObjects(2, waiters, FALSE,
INFINITE);
            switch(result)
               { /* wait */
                case WAIT_OBJECT_0: // shutdown
                    ::CancelIo(parms->hCom);
                    shutdown = ERROR_SUCCESS; // clean shutdown
                    running = FALSE;
                    continue;
                case WAIT_OBJECT_0 + 1: // I/O complete
                    ok = ::GetOverlappedResult(parms->hCom, &ovl,
&bytesRead, TRUE);
                    if(!ok)
                       { /* GetOverlappedResult failed */
                        DWORD err = ::GetLastError();
                        running = FALSE;
                        continue;
                       } /* GetOverlappedResult failed */
                default:
                    { /* trouble */
                     shutdown = ::GetLastError();
-----------> ASSERT(FALSE); // failure <
------------------this line
                     running = FALSE;
                     continue;
                    } /* trouble */
               } /* wait */
           } /* error */
/////////////end code

In line which is last Assert() I got error "debug assertion failed"
when I try start application.
How can I check what is wrong ?