找了半天资料终于搞定了
QSettings *ConfigIni = new QSettings(QSettings::Ini);
ConfigIni->insertSearchPath(QSettings::Unix, "/home/Dawei");.//配置文件目录
ConfigIni->writeEntry(QString::fromUtf8("/config./opt/参数1"), QString::fromUtf8("中文"));
String aaa = ConfigIni->readEntry(QString::fromUtf8("/config./opt/参数1");
delete ConfigIni;
会在/home/Dawei目录下生成config.rc配置文件内容为
[opt]
参数1=中文