QSettings配置文件之读数据

      //读写文件名，要相同，QSettings::IniFormat为固定参数
      QSettings *t_settings = new QSettings("import.ini", QSettings::IniFormat);
     //beginGroup("drawPaint")只能获取指字段名为drawPaint下的数据信息
		t_settings->beginGroup("drawPaint");
      //使用childGroups()可以获取到所有Group（）信息，可以不需知道字段名
        //	QStringList t_str=t_settings->childGroups();
		QString t_group1_name = t_settings->value("path").toString();
		QString t_group1_numCount = t_settings->value("numCount").toString();
		QString t_group1_maxNum = t_settings->value("maxNum").toString();
		QString t_group1_minNum = t_settings->value("minNum").toString();
		t_settings->endGroup();
 //获取到的信息显示到lineEdit控件上
		ui.filenameEdit->setText(t_group1_name);
		ui.countLineEdit->setText(t_group1_numCount);
		ui.maxLineEdit->setText(t_group1_maxNum);
		ui.minLineEdit->setText(t_group1_minNum);
 //deleteLater()与delete t_settings；作用相同，均是释放堆空间
		t_settings->deleteLater();