Re: ADO Connection - "Class Not Registered"

From:

"Igor Tandetnik" <itandetnik@mvps.org>

Newsgroups:

microsoft.public.vc.atl

Date:

Fri, 6 Oct 2006 15:11:59 -0400

Message-ID:

<eTNqNtX6GHA.3452@TK2MSFTNGP05.phx.gbl>

coltrane <tendengarci@yahoo.com> wrote:

On Oct 6, 12:52 pm, "Igor Tandetnik" <itandet...@mvps.org> wrote:

coltrane <tendenga...@yahoo.com> wrote:

hmmmm,

#import "c:\program files\common files\system\ado\msado15.dll"
rename("EOF","EndOfFile")

HRESULT hr = S_OK;
ADODB::_ConnectionPtr pConnection = NULL;
hr = pConnection.CreateInstance(__uuidof(ADODB::_Connection));

0x80040154 Class not RegisteredWhich part of "Connection,
without leading underscore" do you have

difficulty understanding?

the code won't compile without the '_'

What exactly is the error this time?

This program compiles, runs and prints Succeeded:

#include <iostream>

#import "c:\program files\common files\system\ado\msado15.dll"
rename("EOF","EndOfFile")

int main() {
  CoInitialize(0);
  {
    ADODB::_ConnectionPtr pConnection = NULL;
    HRESULT hr =
pConnection.CreateInstance(__uuidof(ADODB::Connection));
    std::cout << ((FAILED(hr) || pConnection == 0) ? "Failed" :
"Succeeded")
              << std::endl;
  }
  CoUninitialize();
  return 0;
}

--
With best wishes,
    Igor Tandetnik

With sufficient thrust, pigs fly just fine. However, this is not
necessarily a good idea. It is hard to be sure where they are going to
land, and it could be dangerous sitting under them as they fly
overhead. -- RFC 1925