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分享VC使用OLE DB中CoCreateInstance(CLSID_SQLOLEDB...的问题
我的程序是
#include <sqloledb.h>
// 并且link了oledb.lib
//Initialize the COM library.
CoInitialize(NULL);
//Obtain access to the SQLOLEDB provider.
IDBInitialize* pIDBInitialize;
HRESULT hr;
hr=CoCreateInstance(CLSID_SQLOLEDB, NULL,
CLSCTX_INPROC_SERVER,
IID_IDBInitialize,
(void **) &pIDBInitialize);
编译时总是出现
error LNK2001: unresolved external symbol "struct _GUID const CLSID_SQLOLEDB" (?CLSID_SQLOLEDB@@3U_GUID@@B)
如何解决啊?
#include <sqloledb.h>
// 并且link了oledb.lib
//Initialize the COM library.
CoInitialize(NULL);
//Obtain access to the SQLOLEDB provider.
IDBInitialize* pIDBInitialize;
HRESULT hr;
hr=CoCreateInstance(CLSID_SQLOLEDB, NULL,
CLSCTX_INPROC_SERVER,
IID_IDBInitialize,
(void **) &pIDBInitialize);
编译时总是出现
error LNK2001: unresolved external symbol "struct _GUID const CLSID_SQLOLEDB" (?CLSID_SQLOLEDB@@3U_GUID@@B)
如何解决啊?
...全文
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jvhua007 2002-02-23
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在VC中使用ATL OLE DB比较简单。
yjli163 2002-02-07
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#define INITGUID 不行,还是老样子.
不解 2002-01-23
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define INITGUID
yjli163 2002-01-23
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希望对其他的朋友有用.
yjli163 2002-01-23
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我知道了,要在include 前加上#define DBINITCONSTANTS
#include <oledb.h>
#define DBINITCONSTANTS
#include <sqloledb.h>
#include <oledb.h>
#define DBINITCONSTANTS
#include <sqloledb.h>
