Please get this to work

[Bryan DeNosky]

I am taking a string and breaking it down character by character and trying to send it out a port. I have no clue how

to get it out the port though. Could someone describe in detail how and what variable to use to get it to go out the

port. I suck at C++ because I just started so please be very explicit with instructions.

//*******My code starts here*******

//space is the emptiness between individual messages

CString space(" ");

//lumps all messages into one data string to be sent out

CString data = m_display1 + space + m_display2 + space + m_display3 + space;

//get the length of the data string

int length = strlen(data);

int count = 0;

//initializes port

m_sendmessagesout.SetPortOpen(VARIANT_TRUE);

//transmission loop

while (count < length)

{

const struct tagVT_BSTR;

CString transfer = data.GetAt(count);

VT_BSTR.COleVariant(transfer);

m_sendmessagesout.SetOutput(VT_BSTR);

count++;

}

//close port

m_sendmessagesout.SetPortOpen(VARIANT_FALSE);

//*******My code ends here*******

[Dazza]

Hi Bryan, it's me again!

I was wrong about the VARIANT_BOOL stuff - the MFC wrapper does the conversion from BOOL to VARIANT_BOOL for you.

So, where are we? I suggest you try the following:

#include <comdef.h> // for definition of _variant_t type

CString data("Stuff to send");

// convert data to a VARIANT

_variant_t var(data);

// select COM1

m_sendmessagesout.SetCommPort(1);

// open the port

m_sendmessagesout.SetPortOpen(TRUE);

// squirt data out of port

m_sendmessagesout.SetOutput(var);


// close port again

m_sendmessagesout.SetPortOpen(FALSE);