在地址
http://blog.csdn.net/everandforever/archive/2005/08/02/444013.aspx
发表的文章,为何我在编译是说标示符(IDBInitialize)没有定义?HRESULT ConnectDatabase( IDBInitialize** ppIDBInitialize, LPCTSTR pszDataSource, LPCTSTR pszUserID, LPCTSTR pszPassword )
{
ASSERT( ppIDBInitialize != NULL && pszDataSource != NULL && pszUserID != NULL && pszPassword != NULL );
UINT uTimeout = 15U; // 连接数据库超时(秒)
TCHAR szInitStr[1024];
VERIFY( 1023 >= wsprintf( szInitStr, _T("Provider=SQLOLEDB;Data Source=%s;Initial Catalog=master;User Id=%s;Password=%s;Connect Timeout=%u"), pszDataSource, pszUserID, pszPassword, uTimeout ) );
//Initial Catalog=master指明连接成功后,"USE master"。 EAutoReleasePtr<IDataInitialize> pIDataInitialize;
HRESULT hResult = ::CoCreateInstance( CLSID_MSDAINITIALIZE, NULL, CLSCTX_INPROC_SERVER,
IID_IDataInitialize, ( void** )&pIDataInitialize );
if( FAILED( hResult ) )
{
return hResult;
}
EAutoReleasePtr<IDBInitialize> pIDBInitialize;
hResult = pIDataInitialize->GetDataSource( NULL, CLSCTX_INPROC_SERVER, ( LPCOLESTR )szInitStr,
IID_IDBInitialize, ( IUnknown** )&pIDBInitialize );
if( FAILED( hResult ) )
{
return hResult;
}
hResult = pIDBInitialize->Initialize( );
if( FAILED( hResult ) )
{
return hResult;
}
* ppIDBInitialize = pIDBInitialize.Detach( );
return S_OK;
}
http://blog.csdn.net/everandforever/archive/2005/08/02/444013.aspx
发表的文章,为何我在编译是说标示符(IDBInitialize)没有定义?HRESULT ConnectDatabase( IDBInitialize** ppIDBInitialize, LPCTSTR pszDataSource, LPCTSTR pszUserID, LPCTSTR pszPassword )
{
ASSERT( ppIDBInitialize != NULL && pszDataSource != NULL && pszUserID != NULL && pszPassword != NULL );
UINT uTimeout = 15U; // 连接数据库超时(秒)
TCHAR szInitStr[1024];
VERIFY( 1023 >= wsprintf( szInitStr, _T("Provider=SQLOLEDB;Data Source=%s;Initial Catalog=master;User Id=%s;Password=%s;Connect Timeout=%u"), pszDataSource, pszUserID, pszPassword, uTimeout ) );
//Initial Catalog=master指明连接成功后,"USE master"。 EAutoReleasePtr<IDataInitialize> pIDataInitialize;
HRESULT hResult = ::CoCreateInstance( CLSID_MSDAINITIALIZE, NULL, CLSCTX_INPROC_SERVER,
IID_IDataInitialize, ( void** )&pIDataInitialize );
if( FAILED( hResult ) )
{
return hResult;
}
EAutoReleasePtr<IDBInitialize> pIDBInitialize;
hResult = pIDataInitialize->GetDataSource( NULL, CLSCTX_INPROC_SERVER, ( LPCOLESTR )szInitStr,
IID_IDBInitialize, ( IUnknown** )&pIDBInitialize );
if( FAILED( hResult ) )
{
return hResult;
}
hResult = pIDBInitialize->Initialize( );
if( FAILED( hResult ) )
{
return hResult;
}
* ppIDBInitialize = pIDBInitialize.Detach( );
return S_OK;
}
#include <atlcom.h>
以上两个都包含了,还要需要的吗?
并且还把 EAutoReleasePtr 全部换成 CComPtr,就行了。