自己简单封装的ado.路径那个还没改。。

使用方法如下

#include "MFCADO.h"  
  
void test_query(CMFCADO& c)  
{  
  
    if(c.GetRecordSet("select * from reward"))  
    {  
        while( RS_NOT_EOF(c.m_pRS) )  
        {  
  
            printf("%s   %d  \n ",    RS_GET_STR(c.m_pRS,"name") , RS_GET_INT(c.m_pRS,"money")  );  
  
            RS_MOVE_NEXT(c.m_pRS);  
        }  
    }  
}  
  
int _tmain(int argc, _TCHAR* argv[])  
{  
    CMFCADO c;  
    if(c.OpenConn("")){  
        printf("OpenConn ok\n");  
    }  
  
  
//c.ExecuteSQL("insert into reward (name,money)values('xx',10000)");  
  
    while(1)  
    {  
        test_query(c);  
    }  
   
  
    Sleep(1000);  
  
  
    return 0;  
}  

CMFCADO.h

#pragma once


#import "C:\Program Files\Common Files\System\ado\msado15.dll" no_namespace rename("EOF","adoEOF") rename("BOF", "adoBOF") 

#define RS_NOT_EOF(rs) !rs->adoEOF
#define RS_GET_STR(rs,colname)  (char*)(_bstr_t)rs->GetCollect(colname)
#define RS_GET_INT(rs,colname)  atoi((char*)(_bstr_t)rs->GetCollect(colname))

#define RS_MOVE_NEXT(rs) rs->MoveNext();

/************************************************************************/
/* 

mfc ado

CMFCADO c;
if(c.OpenConn("")){
   printf("OpenConn ok");
}

c.ExecuteSQL("insert into table (x,b)values(7,10000)");



simawei@qq.com        
2012.8.1


*/
/************************************************************************/

class CMFCADO
{
public:
    CMFCADO(void);
    ~CMFCADO(void);

    //通过文件路径打开mdb数据库
    bool OpenConn(LPCTSTR mdb_filepath);

    void CloseConn();

    bool  CMFCADO::GetRecordSet(LPCTSTR bstrSQL);

    bool CMFCADO::ExecuteSQL(LPCTSTR  bstrSQL);
 
    void CloseRecordset(void);

    _RecordsetPtr m_pRS;//添加一个指向RecordSet对象的指针

private:


    _ConnectionPtr m_pConnection;//添加一个指向Connection对象的指针

};
 

CMFCADO.cpp

#include "StdAfx.h"
#include ".\mfcado.h"

CMFCADO::CMFCADO(void)
{
  
    ::CoInitialize(NULL);//初始化OLE/COM库环境


 
}

CMFCADO::~CMFCADO(void)
{
    CloseConn();

     ::CoUninitialize();  

}
void CMFCADO::CloseConn()
{
    try
    {
        if ( m_pConnection!=NULL  )    
        {
            m_pConnection->Close();
            m_pConnection=NULL;
        }
    }
    catch(_com_error &e)
    {
        //printf("CADO::Close()  exception: %s\n",(char*)e.Description());//显示错误信息
    }
}

bool CMFCADO::OpenConn(LPCTSTR mdb_filepath)
{
    //m_pConnection.CreateInstance(_uuidof(Connection));
 
    //创建Connection 对象
    m_pConnection.CreateInstance("ADODB.Connection"); 

    try
    {     
        HRESULT hr=m_pConnection->Open("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=x.mdb","","",adModeUnknown);
        if (FAILED(hr))
        {
            m_pConnection=NULL;

            printf("Connection->Open FAILED\n");
        }
    
    }
    catch(_com_error e)
    {
        //AfxMessageBox( (char*)e.Description() );//显示错误信息);
        printf("[%s] err [%s]\n",__FUNCTION__,(char*)e.Description());
        return false;
    }

    return true;

}

bool CMFCADO::ExecuteSQL(LPCTSTR  bstrSQL)
{
    _variant_t vRowsAffected;

    try
    {
        m_pConnection->Execute(bstrSQL,&vRowsAffected,adCmdText);

        //vRowsAffected.intVal;
    }
    catch (_com_error e)
    {
        printf("[%s] err [%s]\n",__FUNCTION__,(char*)e.Description());
        return false;
    }
     
    return  true;
}
void CMFCADO::CloseRecordset(void)  
{  
    if(m_pRS !=NULL )  
    {    
        m_pRS->Close();
        m_pRS=NULL;
    }
}  

bool  CMFCADO::GetRecordSet(LPCTSTR bstrSQL)
{
    CloseRecordset();

    //Log(MSG_SQL,"Query [%s]\n",bstrSQL);

    //m_pRecordset.CreateInstance(__uuidof(Recordset));
    
    //创建记录集对象
    m_pRS.CreateInstance("ADODB.Recordset");

    try
    {
        /*
        lockType 表示当打开记录集时，数据提供者用于锁定数据库的类型： 
            adLockReadOnly 数据不能改变，这是缺省值！ 
            adLockPessimistic 数据提供者在开始编辑数据的时候锁定记录 
            adLockOptimistic 仅当调用update方法时，数据提供者锁定记录 
            adLockBatchOptimistic 用于批处理修改 
            他们的常量值定义分别是： 
            adLockReadOnly = 1 
            adLockPessimistic = 2 
            adLockOptimistic = 3 
            adLockBatchOptimistic = 4*/

        //取得表中的记录
        HRESULT hr=    m_pRS->Open(bstrSQL,
                m_pConnection.GetInterfacePtr(),  // 获取库接库的IDispatch指针 ,
                adOpenDynamic,
                adLockReadOnly, //,adLockBatchOptimistic    adLockOptimistic
                adCmdText);
        if (FAILED(hr))
        {
            m_pRS=NULL;
        }else{
            
        }
    }
    catch (_com_error e)
    {
        printf("[%s] err [%s]\n",__FUNCTION__,(char*)e.Description());
        return false;
    } 

    return true;
}