MSComm and SetOutput()....how?

I'm a little confused about the use of MSComm::SetOutput(). I'd like to output one single byte, but am not sure how to do so using the proper parameter.

The prototype says to use a VARIANT, but I don't think I am correctly doing so.

Can anybody help me out? Thanks for your assistance!

Thanks,
Phil

Hello, maybe this is a little bit late :p

since it has been almost three years since this message was posted by PhilipG. But for the last couple days I've been having the same problem. And luckily I found this code somewhere in a Chinese website (which my web browser doesn't even able to display the chinese text, but of course the codes are writen in ANSI standard character :D)

The major problem of sending single byte using MSComm::SetOutput() function is about converting BYTE (unsigned char) data types into struct VARIANT data types..
I am using the SNAP protocol (http://www.hth.com/snap/)
so here is the codes:

CByteArray OutBuf;
COleVariant varOutput;
OutBuf.SetSize(OutPacket.NumOfBytes);
unsigned int i;

for(i=0 ; i<OutPacket.NumOfBytes ; i++)
{
OutBuf[i] = OutPacket.PacketBytes[i];
}
varOutput = OutBuf;

m_ctlSerialComm.SetOutput(varOutput);

Hope this will be usefull..

Regards,

Leo