CoInitialize

Hello I am having a problem... okay in the following code there is a function called CoInitialize. this function is giving me an error saying it is undefined.
okay i know it has something to do with the dll and i think it has something to do with my compiler...

is there something equal to CoInitialize in C++ Borland 6?

Any help would be great!

Code:

---

//**************************************
//   
// Name: Access MDB
// Description:To open MS Access or Ms S
//    QL server database using C/C++ or VC++
// By: Mokarrabin A Rahman
//
// Returns:Shows some recordsets
//
// Assumes:Change the name of the databa
//    se to any database and place it in the s
//    ame directory as the .exe. You shoul als
//    o change the SQL to your particular data
//    base. You may change the connect string
//    to connect to MS SQL Server.
//
// Side Effects:Great
//
//This code is copyrighted and has// limited warranties.Please see http://
//    www.Planet-Source-Code.com/xq/ASP/txtCod
//    eId.1371/lngWId.3/qx/vb/scripts/ShowCode
//    .htm//for details.//**************************************
//   

#import "c:\Program Files\Common Files\System\ADO\msado15.dll" \
no_namespace rename("EOF", "EndOfFile")
// This code comes from : www.geocities.
//    com/mokarrabin
#include <stdio.h>
#include <iostream.h>
void main(void)


    {
    CoInitialize(NULL);
    try


        {
        _RecordsetPtr pRst("ADODB.Recordset");
        // Connection String
        _bstr_t strCnn("DRIVER={Microsoft Access Driver (*.mdb)};UID=admin;DBQ=GBOOK.mdb");
                // Open table
                pRst->Open("SELECT * FROM ProductService where ProductService like '%samir%';", strCnn, adOpenStatic, adLockReadOnly, adCmdText);
               
                pRst->MoveFirst();


                    while (!pRst->EndOfFile) {
                            cout<<(char*) ((_bstr_t) pRst->GetFields()->GetItem("ProductService")->GetValue())<<endl;
                            pRst->MoveNext();
                    }
                    pRst->Close();
                   
        }
        catch (_com_error &e)


            {
            cout<<(char*) e.Description();
        }
        ::CoUninitialize();
    }

---

CoInitialize is declared in objbase.h but is superceded by CoInitializeEx. At a minimum you should #define _WIN32_DCOM prior to #including <objbase.h>; you may also have to #include <windows.h> first. If CoInitializeEx doesn't work for you, the older CoInitialize should still work ok.

Hope that helps. :)

I think Ken is right. Some compilers (namely older mingw's) are retarded about linking COM stuff. Since you are using Borland 6 I doubt this is the cause. But if Ken's doesn't work check the docs on Borland 6.

Quote:

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#import "c:\Program Files\Common Files\System\ADO\msado15.dll" \

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Since I haven't tinkered with SQL, I don't know if the same thing holds true there or not, but if this is a C or C++ string, you'll need double backslashes to make that a valid path. \ is an escape sequence when in strings (or single characters) in C++.

Quzah.

Quote:

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Originally posted by quzah
Since I haven't tinkered with SQL, I don't know if the same thing holds true there or not, but if this is a C or C++ string, you'll need double backslashes to make that a valid path. \ is an escape sequence when in strings (or single characters) in C++.

Quzah.

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You can get away with this in MSVC++ as its just a command to the compiler and is snatched away by the preprocessor

As Ken says, include windows.h .....you might also neede to include ole32.lib for it to link