MFC中SQLite数据库的使用

1打开数据库

BOOL playDlg::openData()

{

WCHAR a[100];

CString path;

path = m_exePath+L"sentence_making\\FROG.db";

memcpy(a,path,sizeof(a));

int nRet = sqlite3_open16((const char *)a,&pSQLite);   // 链接到数据库，如果成功，数据库句柄指针存储于pSQLite 中

// 函数返回SQLITE_OK 表示连接成功，否则直接退出连接

if (nRet != SQLITE_OK)

{

AfxMessageBox(L"open DataBase failed");

}

return TRUE;

}

2、查询数据库

CString playDlg::selData(UINT num)

{

CString sentence;

sqlite3_stmt * stat;

CString sql2;

sql2.Format(L"select * from zao_ju_lian_xi where [index] = %d",num);

//sql2.Format(L"select * from zao_ju_lian_xi where [index] =");

sqlite3_prepare16(pSQLite,sql2,-1,&stat,0);

if(sqlite3_step(stat)==SQLITE_ROW )

sentence = (CString)sqlite3_column_text(stat,1);

sqlite3_finalize(stat);

sence[senNum] = sentence;

return sentence;

}

3、

关闭数据库

BOOL playDlg::closeData()

{

if (pSQLite)

{

sqlite3_close(pSQLite);     // 关闭SQLite 数据库连接

pSQLite = NULL;

return TRUE;

}

else

{

return FALSE;

}

}