This system configuration: ThinkPadT570, Windows10, QT5.12.2 (QtCreater4.8.2 )
I created qt project called EditPic, 1. The following code defines the Login structure, which put the two variables userName and password; 2 defined. Login logins a type of queue, and the data padding 5; 3 by beginWriteArray manner, data is written editpic.ini logins file; 4 logins node reads data from the file editpic.ini; 5. the read data is written editpic2.ini file.
Specific code as follows:
In the class structure of the outer definition of the structure mainwindow.cpp:
struct {the Login
QString the userName;
QString password;
the Login (): the userName ( ""), password ( "")
{
}
Login(QString name,QString pwd):userName(""),password("")
{
userName = name;
password = pwd;
}
};
Add the following code in the constructor mainwindow.cpp:
//获取ini文件路径
QString wstrFilePath;
#if defined(Q_OS_LINUX)//区分在linux下还是windows下
wstrFilePath = qApp->applicationDirPath() + "/../EditPic/editpic.ini" ;//in linux
#else
wstrFilePath = qApp->applicationDirPath() + "/../../EditPic/editpic.ini" ;//in windows，我的工程名为EditPic，二editpic.ini放在工程源文件目录下
#endif
QSettings *settings=new QSettings(wstrFilePath,QSettings::IniFormat);//用QSetting获取ini文件中的数据
QList<Login> logins;//定义一个Login类型的队列，用来放配置文件中logins节点的数据
logins.push_back(Login("name1","pw1"));
logins.push_back(Login("name2","pw2"));
logins.push_back(Login("name3","pw3"));
logins.push_back(Login("name4","pw4"));
logins.push_back(Login("name5","pw5"));
settings->clear();//清空settings中的数据
settings->beginWriteArray("logins");//通过beginWriteArray的方式将队列logins写进editpic1.ini的logins节点
for (int i = 0; i < logins.size(); ++i) {
settings->setArrayIndex(i);//标记Array的索引
settings->setValue("userName", logins.at(i).userName);//添加userName键的值
settings->setValue("password", logins.at(i).password);//添加password键的值
}
settings->endArray();//结束队列的输入，与settings->beginWriteArray("logins");相对应
//通过beginReadArray的方式将ini文件中的logins节点读取到logins队列中
if(!logins.empty())
{
logins.clear();
}
int size = settings->beginReadArray("logins");
for (int i = 0; i < size; ++i) {
settings->setArrayIndex(i);
Login login;
login.userName = settings->value("userName").toString();
login.password = settings->value("password").toString();
logins.append(login);
}
settings->endArray();
//将从editpic.ini读取到的logins节点的值写到editpic2.ini文件中
wstrFilePath = qApp->applicationDirPath() + "/../../EditPic/editpic2.ini" ;//in windows
QSettings *settings2 = new QSettings(wstrFilePath,QSettings::IniFormat);
settings2->clear();
settings2->beginWriteArray("logins");
for (int i = 0; i < logins.size(); ++i) {
settings2->setArrayIndex(i);
settings2->setValue("userName", logins.at(i).userName);
settings2->setValue("password", logins.at(i).password);
}
settings2->endArray();
settings2->setValue("global/name","editpic2.ini");//通过普通的方式将global节点下name键的值设置为"editpic2.ini"
After the software is running discovery project folder and added editpic.ini editpic2.ini file, shots are as follows:
