try 
	{ 
		query = new QSqlQuery(m_db); 	
	}  
	catch ( exception & e ) 
	{ 
		QString temp = e.what();  
		msgBox.setStandardButtons(QMessageBox::Cancel);
		msgBox.setIcon(QMessageBox::Critical);
		msgBox.setText(temp);
		msgBox.exec();
	}
	
	if(m_db.open())
	{
		query->exec("SELECT * FROM ARTICLE_DE_BLOG");
		QString temp = query->value(0).toString();
		msgBox.setText(qApp->tr("hi"));
		msgBox.exec();
		this->m_open = true ;
	}