Replying to a message of Peter Schuller to Marcel Vandevusse:

 MV>> ulBufferLength = 4096;  
 MV>> rc = DosRead( ComHandle, pBufferArea, ulBufferLength, &BytesRead );

 PS> 4096? Is that the maximum length a commandlineparameter can be?

Actually, I have no idea what the maximum length of a command line
parameter is under OS/2. I'll have to remember to do some tests on that
some time. But this buffer here is not for the command line parameters.
This is the buffer that will receive data coming in from the com port (or
whatever else ComHandle points to, like a file or pipe).

 MV>> ulBufferLength = strlen( pBufferArea);
 MV>> rc = DosWrite( ComHandle, pBufferArea, ulBufferLength,
 MV>> &BytesWritten);

 MV>> There is one problem with the above:
 MV>> If the BBS program didn't tell the com driver to return a DosRead
 MV>> after a certain period of time has expired, even if our buffer is
 MV>> not full yet, the DosRead will never return until 4096 characters
 MV>> have been received. To prevent this, the BBS program, right after
 MV>> using DosOpen to open the com port, has to use a DosDevIoCtl call.
 MV>> For information on this, look up ioctl functions, category 1 (async
 MV>> functions), function 0x53 (set the device control block).

 PS> I'll look in to that, but that should have been taken are of already
 PS> by Maximus.

I would imagine so.

Marcel,                 Check out the baby pics; last updated on June 12, 1996:
[Team OS/2]             http://www.bright.net/~mvusse

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