主题：[原创]VBS读写注册表，全局变量，INI文件和数据库的示例

#include <QCoreApplication>
#include <QDebug>
#include <QSettings>
#include <QtSql/QSqlDatabase>
#include <QtSql/QSqlQuery>
#include <QFile>

//测试注册表读写
void testRegistry(){
    QString path = "software\\weisoft\\金字塔\\settings";

    QSettings settings(path,QSettings::NativeFormat);

    settings.setValue("myid",12345);

    qDebug() << settings.value("myid").toInt();
}

//测试INI文件读写
void testINI(){
    QString path = "d:\\mysettings.ini";

    QSettings settings(path,QSettings::IniFormat);

    settings.setValue("myid",12345);

    qDebug() << settings.value("myid").toInt();
}

//测试全局变量读写
void testExtData(){
    QSettings settings("上海中期","北京营业部");
    settings.setValue("myid",12345);
    qDebug() << settings.value("myid").toInt();
}

//测试数据库读写
void testDatabase(){
    QSqlDatabase db = QSqlDatabase::addDatabase("QSQLITE");

    db.setDatabaseName("mytest.db");

    if(!db.open()){
        qDebug() << "db is not open";
    }else{
        QSqlQuery query;
        query.exec("create table main(id varchar)");
        query.exec("insert into main values(12345)");
        query.exec("select * from main");
        while(query.next()){
            qDebug() << query.value(0).toInt();
        }
    }
}

//测试CSV文件读写
void testCSV(){
    QFile csvFile("d:\\mytest.csv");

    if(csvFile.open(QIODevice::WriteOnly)){
        csvFile.write("1,2,3,4,5");
        csvFile.close();
    }

    if(csvFile.open(QIODevice::ReadOnly)){
        QTextStream in(&csvFile);
        QString result = in.readLine();
        qDebug() << result;
        csvFile.close();
    }
}

int main(int argc, char *argv[]){
    QCoreApplication a(argc, argv);
    testRegistry();
    testExtData();
    testINI();
    testDatabase();
    testCSV();
    return a.exec();
}