在QML代码中获取Qt版本的全局函数或宏

here .

一个简单的例子,给出一个简单的qml文件,如下所示:

import QtQuick 2.9
import QtQuick.Window 2.2

Window {

    Text {
        text: qtversion
    }

    visible: true
    width: 640
    height: 480
    title: qsTr("Hello World")
}

设置 qtversion 启动时的属性,在 main 功能:

#include <QGuiApplication>
#include <QQmlApplicationEngine>
#include <QQmlContext>

int main(int argc, char *argv[])
{
    QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);

    QGuiApplication app(argc, argv);

    QQmlApplicationEngine engine;
    engine.rootContext()->setContextProperty("qtversion", QString(qVersion()));
    engine.load(QUrl(QStringLiteral("qrc:/main.qml")));
    if (engine.rootObjects().isEmpty())
        return -1;    

    return app.exec();
}