探讨ODBC的API函数SQLBrowseConnect的使用,该如何处理

探讨ODBC的API函数SQLBrowseConnect的使用
研究SQLBrowseConnect函数的使用，屡屡碰壁，希望可以在这里解决…
先贴代码，后上图片。首先，代码如下：
引用+声明：

C/C++ code

#include <sqlext.h>#define BRWS_LEN 100

C/C++ code

    SQLHENV    henv;    SQLHDBC hdbc;    SQLHSTMT hstmt;    SQLRETURN rtcode;    SQLCHAR szConnStrin[BRWS_LEN],szConnStrOut[BRWS_LEN];    SQLSMALLINT cbConnStrOut;    //Allocate Environment Handle    rtcode=SQLAllocHandle(SQL_HANDLE_ENV,SQL_NULL_HANDLE,&henv);    if (rtcode==SQL_SUCCESS||rtcode==SQL_SUCCESS_WITH_INFO)    {        //Environment Attribute Settings        rtcode=SQLSetEnvAttr(henv,SQL_ATTR_ODBC_VERSION,(SQLPOINTER)SQL_OV_ODBC3,SQL_IS_INTEGER);        if (rtcode==SQL_SUCCESS||rtcode==SQL_SUCCESS_WITH_INFO)        {            //Allocate Connect Handle            rtcode=SQLAllocHandle(SQL_HANDLE_DBC,henv,&hdbc);            if (rtcode==SQL_SUCCESS||rtcode==SQL_SUCCESS_WITH_INFO)            {                //First Call SQLBrowseConnect                    rtcode=SQLBrowseConnect(hdbc,(SQLCHAR *)"Driver={SQL Server};",SQL_NTS,                    szConnStrOut,BRWS_LEN,&cbConnStrOut);                if (rtcode==SQL_NEED_DATA)                {                    MessageBox((char *)szConnStrOut,"Tips",MB_OK);                }                SQLDisconnect(hdbc);                                //Second Call SQLBrowseConnect                rtcode=SQLBrowseConnect(hdbc,(SQLCHAR *)"Driver={SQL Server};SERVER=(local);UID=sa;PWD='';",SQL_NTS,                    szConnStrOut,BRWS_LEN,&cbConnStrOut);                if (rtcode==SQL_NEED_DATA)                {                    MessageBox((char *)szConnStrOut,"Tips",MB_OK);                }                if (rtcode==SQL_SUCCESS||rtcode==SQL_SUCCESS_WITH_INFO)                {                    MessageBox("数据源连接成功！","信息提示",MB_OK);                }                SQLDisconnect(hdbc);            }        }        SQLFreeHandle(SQL_HANDLE_DBC,hdbc);    }    SQLFreeHandle(SQL_HANDLE_ENV,henv);