Задача вывода названия столбцов БД, вроде всё правильно но она вылетает, пишу на VS.NET 2003
#define UNICODE
#define _UNICODE
#define DBINITCONSTANTS
#define INITGUID

#include <iostream>
#include <Windows.h>
#include <stdio.h>
#include <tchar.h>
#include <stddef.h>
#include <oledb.h>
#include <oledberr.h>
#include <msdaguid.h>
#include <msdasql.h>

void main()
{
IDBInitialize* pIDBInitialize = NULL;
IDBCreateSession* pCreateSession = NULL;
IDBCreateCommand* pCreateCommand = NULL;
IRowset* pRowset = NULL;
ICommandText* pCommandText = NULL;
IDBProperties* pIDBProperties;
IColumnsInfo *pColumnsInfo;
IAccessor* pAccessor;
HACCESSOR hAccessor;
DBCOLUMNINFO* pDBColumnInfo;
DBPROP InitProperties[4];
DBPROPSET rgInitPropSet[1];
INT i;
ULONG j, lNumCols, cbColOffset = 0;
ULONG lNumRowsRetrieved;
HROW hRows[5];
HROW* pRows = &hRows[0];
LONG cNumRows;
DBBINDING* pBindings;
char *pBuffer;
WCHAR* pStringBuffer;
char *p = new char[100];

LPCOLESTR wCmdString = OLESTR("Select * From Table1");
CoInitialize(NULL);
CoCreateInstance(CLSID_MSDASQL, NULL, CLSCTX_INPROC_SERVER, IID_IDBInitialize, (void**)&pIDBInitialize);
for(i = 0; i < 4; i++)
{
VariantInit(&InitProperties .vValue);
InitProperties.dwOptions = DBPROPOPTIONS_REQUIRED;
InitProperties.colid = DB_NULLID;
}

InitProperties[0].dwPropertyID = DBPROP_INIT_PROMPT;
InitProperties[0].vValue.vt = VT_I2;
InitProperties[0].vValue.iVal = DBPROMPT_NOPROMPT;

InitProperties[1].dwPropertyID = DBPROP_AUTH_USERID;
InitProperties[1].vValue.vt = VT_BSTR;
InitProperties[1].vValue.bstrVal = SysAllocString((LPOLESTR)L"");

InitProperties[2].dwPropertyID = DBPROP_AUTH_PASSWORD;
InitProperties[2].vValue.vt = VT_BSTR;
InitProperties[2].vValue.bstrVal = SysAllocString((LPOLESTR)L"");

InitProperties[3].dwPropertyID = DBPROP_INIT_DATASOURCE;
InitProperties[3].vValue.vt = VT_BSTR;
InitProperties[3].vValue.bstrVal = SysAllocString((LPOLESTR)L"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\\data.mdb;");

rgInitPropSet[0].guidPropertySet = DBPROPSET_DBINIT;
rgInitPropSet[0].cProperties = 4;
rgInitPropSet[0].rgProperties = InitProperties;

pIDBInitialize->QueryInterface(IID_IDBProperties, (void**)&pIDBProperties);
pIDBProperties->SetProperties(1, rgInitPropSet);
pIDBProperties->Release();
pIDBInitialize->Initialize();
pIDBInitialize->QueryInterface(IID_IDBCreateSession, (void**)&pCreateSession);
//////////////////////////////////////////////////////////////////////////
//вот в этой строке она вылетает.
pCreateSession->CreateSession(NULL, IID_IDBCreateCommand, (IUnknown**)&pCreateCommand);
//////////////////////////////////////////////////////////////////////////
pCreateCommand->CreateCommand(NULL, IID_ICommandText, (IUnknown**)&pCommandText);
pCommandText->SetCommandText(DBGUID_DBSQL, wCmdString);
pCommandText->Execute(NULL, IID_IRowset, NULL, &cNumRows, (IUnknown**)&pRowset);

pRowset->QueryInterface(IID_IColumnsInfo, (void**)&pColumnsInfo);
pColumnsInfo->GetColumnInfo(&lNumCols, &pDBColumnInfo, &pStringBuffer);
pColumnsInfo->Release();

pBindings = new DBBINDING[lNumCols];
for(j = 0; j < lNumCols; j++)
{
pBindings[j].iOrdinal = j + 1;
pBindings[j].obValue = cbColOffset;
pBindings[j].obLength = 0;
pBindings[j].obStatus = 0;
pBindings[j].pTypeInfo = NULL;
pBindings[j].pObject = NULL;
pBindings[j].pBindExt = NULL;
pBindings[j].dwPart = DBPART_VALUE;
pBindings[j].dwMemOwner = DBMEMOWNER_CLIENTOWNED;
pBindings[j].eParamIO = DBPARAMIO_NOTPARAM;
pBindings[j].cbMaxLen = pDBColumnInfo[j].ulColumnSize;
pBindings[j].dwFlags = 0;
pBindings[j].wType = pDBColumnInfo[j].wType;
pBindings[j].bPrecision = pDBColumnInfo[j].bPrecision;
pBindings[j].bScale = pDBColumnInfo[j].bScale;

cbColOffset = cbColOffset + pDBColumnInfo[j].ulColumnSize;
}

pRowset->QueryInterface(IID_IAccessor, (void**)&pAccessor);
pAccessor->CreateAccessor(DBACCESSOR_ROWDATA, lNumCols, pBindings, 0, &hAccessor, NULL);
for(j = 0; j < lNumCols; j++)
{
WideCharToMultiByte(CP_OEMCP, 0, pDBColumnInfo[j].pwszName, -1, p, 100, 0, 0);
std::cout<<"\t"<<p;
}

delete pBuffer;
delete p;
pAccessor->ReleaseAccessor(hAccessor, NULL);
pAccessor->Release();
delete pBindings;
pRowset->Release();
pCommandText->Release();
pCreateSession->Release();
pCreateCommand->Release();
pIDBInitialize->Uninitialize();
pIDBInitialize->Release();
CoUninitialize();
}