c++中如何得到select返回结果问题！！！

由于毕业设计需要在www.codeproject.com找到一篇文章，主要关于如何利用c++连接并且操作sql server数据库的，文章写的很好，例子也是正确的，但是例子中演示了如何连接数据库，并且往sql server里插入（insert）一条记录的过程，由此可以懂得如何进行修改，删除的操作，但是查询（select）如何做到呢?
下面一是作者举的例子，二是作者的说明，请高手指点一下如何进行select操作，主要是如何得到返回结果！
分不够，可以再加！
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一：作者给的一个例子
#include <windows.h>

#include <sqlext.h>

#include <stdio.h>
#include <string.h>


int main(void)

{

HENV hEnv = NULL; // Env Handle from SQLAllocEnv()

HDBC hDBC = NULL; // Connection handle

HSTMT hStmt = NULL;// Statement handle

UCHAR szDSN[SQL_MAX_DSN_LENGTH] = "Test";// Data Source Name buffer

UCHAR szUID[10] = "test";// User ID buffer

UCHAR szPasswd[10] = "test";// Password buffer

UCHAR szModel[128];// Model buffer

SDWORD cbModel;// Model buffer bytes recieved

char buff[9] = "Testing";


UCHAR szSqlStr[128]= "INSERT into Quali (Colname) Values ('Testing')" ;


RETCODE retcode;

//sprintf((char*)szSqlStr,"INSERT into <Tablename> (Colname) Values ('%s')",buff);


// Allocate memory for ODBC Environment handle

SQLAllocEnv (&hEnv);


// Allocate memory for the connection handle

SQLAllocConnect (hEnv, &hDBC);



// Connect to the data source "test" using userid and password.

retcode = SQLConnect (hDBC, szDSN, SQL_NTS, szUID, SQL_NTS, szPasswd, SQL_NTS);



if (retcode == SQL_SUCCESS || retcode == SQL_SUCCESS_WITH_INFO)

{

// Allocate memory for the statement handle

retcode = SQLAllocStmt (hDBC, &hStmt);



// Prepare the SQL statement by assigning it to the statement handle

retcode = SQLPrepare (hStmt, szSqlStr, sizeof (szSqlStr));



// Execute the SQL statement handle

retcode = SQLExecute (hStmt);



// Project only column 1 which is the models

SQLBindCol (hStmt, 1, SQL_C_CHAR, szModel, sizeof(szModel), &cbModel);



// Get row of data from the result set defined above in the statement

retcode = SQLFetch (hStmt);


// Free the allocated statement handle

SQLFreeStmt (hStmt, SQL_DROP);


// Disconnect from datasource

SQLDisconnect (hDBC);

}



// Free the allocated connection handle

SQLFreeConnect (hDBC);



// Free the allocated ODBC environment handle

SQLFreeEnv (hEnv);

return 0;