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:
,