Qt - ini文件读写

1,  ini文件在windows系统中可以存储需要持久保存的配置信息,注册表信息等;文件格式由键 值组成,键值由section分成不同的段,如下图,[GPS]为section name,gpsBaud为键,4800为值。Qt 的QSettings类可很容易实现ini文件的读写

2,新建QtWidget工程

3,INI写(需包含QSettings)

void MainWindow::on_writepushButton_clicked()
{
    QSettings settings("TestSetting.ini", QSettings::IniFormat); // 当前目录的INI文件
    //GPS setting
    settings.beginGroup("GPS");
    settings.setValue("gpsBaud", 4800);
    settings.setValue("gpsPort", "com7");
    settings.setValue("gpsType", "uBlox");
    settings.endGroup();

}

单击writeIni按钮,在当前目录中生成TestSetting.ini文件

TestSetting.ini文件内容如下:

4,INI读

void MainWindow::on_readpushButton_clicked()
{
    QSettings settings("TestSetting.ini", QSettings::IniFormat);

    if(settings.contains("GPS/gpsBaud"))
    {
        QString gpsBaud = settings.value("GPS/gpsBaud").toString();
        ui->gpsBaudlineEdit->clear();
        ui->gpsBaudlineEdit->insert(gpsBaud);

        QString gpsPort = settings.value("GPS/gpsPort").toString();
        ui->gpsPortlineEdit->clear();
        ui->gpsPortlineEdit->insert(gpsPort);

        QString gpsType = settings.value("GPS/gpsType").toString();
        ui->gpsTypelineEdit->clear();
        ui->gpsTypelineEdit->insert(gpsType);
    }
}

 

5,结果如下:

posted @ 2017-03-27 18:40  暗夜影  阅读(9170)  评论(0编辑  收藏  举报