main.cpp

#include "gfile.h"
#include <QGuiApplication>
#include <QApplication>
#include <QQmlApplicationEngine>
#include <gfile.h>
#include <QMessageBox>
#include <QSharedMemory>
#include "delbuttontype.h"
#include "logger.h"

int main(int argc, char *argv[])
{
    QGuiApplication app(argc, argv);
    QSharedMemory sharedMemory("545Rand");
    QApplication* app2=new QApplication(argc, argv);
    if (sharedMemory.attach()) {
        // 已附加到现有内存段，说明已有实例运行
        QMessageBox::warning(nullptr, "545Rand", "程序已经在运行中");
        return 3;
    }
    else{
        // 创建共享内存段
        if (!sharedMemory.create(1)) {
            QMessageBox::critical(nullptr, "错误", "无法创建共享内存段");
            return 1;
        }

        qmlRegisterUncreatableMetaObject(DelButtonType::staticMetaObject, "DelegateUI.Controls", 1, 0
                                         , "DelButtonType", "Access to enums & flags only");

        qmlRegisterType<GFile>("GFile",1,2,"GFile");
        qmlRegisterSingletonType<Logger>(
            "Logger", 1, 0, "Logger",
            [](QQmlEngine *engine, QJSEngine *scriptEngine) -> QObject * {
                Q_UNUSED(engine)
                Q_UNUSED(scriptEngine)
                return new Logger();
            }
            );
        QQmlApplicationEngine engine;
        GFile file;
        file.setSource("./scale.txt");
        QString s=file.read();
        qputenv("QT_SCALE_FACTOR",s.toLatin1());
        file.setSource("./run.ini");
        s=file.read();
        QUrl url(QStringLiteral("qrc:/main.qml"));
        if(s=="bar"){
            url=QStringLiteral("qrc:/main_bar.qml");
        }

        QObject::connect(&engine, &QQmlApplicationEngine::objectCreated,
                         &app, [url](QObject *obj, const QUrl &objUrl) {
                             if (!obj && url == objUrl)
                                 QCoreApplication::exit(-1);
                         }, Qt::QueuedConnection);
        engine.load(url);
        return app.exec();
    }
}