How to pass variant (array of bytes) to winsock.ocx

From:
=?Utf-8?B?bXhh?= <mxa@discussions.microsoft.com>
Newsgroups:
microsoft.public.vc.mfc
Date:
Thu, 8 Jun 2006 19:07:01 -0700
Message-ID:
<AEDFF613-F746-4962-9533-46B3C2D42DEA@microsoft.com>
I'm attempting to use Winsock.ocx in a Visual Studio 6.0, C++ application and
I have a question on how to pass variants to a winsock GetData function
defined as follows: GetData(VARIANT *data, const VARIANT &type, const VARIANT
&maxLen).

I have no problems with other functions, but this particular function never
returns if I make the call with the VARIANT *data defined as a byte array.

My question, is how would I go about getting the data as an Array of Bytes?

What has worked is when I call the GetData as follows defining a BSTR type:

void CWme_rwDlg::OnDataArrivalRxwfsock( long bytesTotal)
{
    COleVariant var, varType, varLth(bytesTotal)
    varType.iVal = VT_BSTR;
    varType.vt = VT_I2;
    GetData( &var, varType, varLth); // Winsock control getdata
function
    Cstring str = (BSTR) var.bstrVal;
    AfxMessageBox(str);
}

The above code works when sending a BSTR. However, I want to send an array
of bytes and have attempted to the following:

void CWme_rwDlg::OnDataArrivalRxwfsock( long bytesTotal)
{
    COleVariant var, varType, varLth(bytesTotal)
    varType.iVal = VT_ARRAY | VT_I1);
    varType.vt = VT_I2;
    GetData( &var, varType, varLth); // Winsock control getdata
function
    AfxMessageBox("Get Data Succeeded");
}

The number of bytes transmitted matches the number of bytes received,
however when I call the GetData function, it never returns. I'm assuming
I'm defining something incorrectly and was wondering if someone can provide
me with some advice?

 
 
 
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