🚀 go-pugleaf

Hi all, just a quick question on using proxy settings with InternetOpen.

I have a live update system in place which works perfectly, however, some 
customers have come back and requested the facility to input and use a proxy 
server.  Having looked at the MSDN reference it seemed pretty easy to 
implement this within the initial InternetOpen call.

My code looks like this:

DWORD dwAccessType;
AnsiString szProxySz;
if (getProxyOptions())
{
   dwAccessType = INTERNET_OPEN_TYPE_PROXY;
   szProxySz    = AnsiString("\"\"http=http://" + getProxyAddress() + ":" + 
getProxyPortNum() + "\"\"");
}
else
{
   dwAccessType = INTERNET_OPEN_TYPE_DIRECT;
   szProxySz    = NULL;
}

hINetHnd = InternetOpen(TEXT("Live Update"), dwAccessType, 
szProxySz.c_str(), NULL, 0);
if (!hINetHnd)
   throw EAbort(SysErrorMessage(GetLastError()), 0);

When no proxy setting are enabled, the code works without problem.  When 
they are enabled, with valid values, the InternetOpen call fails and 
GetLastError returns, "Parameter are Incorrect"

Just a quick point before anyone suggests it, I can't use the preconfigured 
proxy settings because of the context that my code is running in.  Does 
anyone have any ideas what I'm doing wrong here?

Many thanks in advance,

Mike C