https://blog.csdn.net/liang19890820/article/details/50513695
QSettings settings(“./test.ini”, QSettings::IniFormat);
settings.setIniCodec(QTextCodec::codecForName("UTF-8"));
settings.setValue("editor/wrapMargin", 68);
int margin = settings.value("editor/wrapMargin", 80).toInt();
- contains() 判断一个指定的键是否存在
- remove() 删除相关的键
- allKeys() 获取所有键
- clear() 删除所有键