QQuickView 和 QQuickWindow 有什么区别? [英] What's the difference between QQuickView and QQuickWindow?

问题描述

我目前正在使用 Qt 5.2.1... 我有一个(可能是愚蠢的?)问题:QQuickView 和 QQuickWindow 之间有什么区别?

I am currently working with Qt 5.2.1... and I have a (maybe stupid?) question: What is the difference between QQuickView and QQuickWindow?

我阅读了文档，但我仍然不清楚......

I read the documentation but it is still not clear to me...

推荐答案

来自 Qt 文档:

QQuickView 类提供了一个显示 Qt Quick 用户的窗口界面.

The QQuickView class provides a window for displaying a Qt Quick user interface.

QQuickView 是 QQuickWindow 的一个方便的子类，它将给定 URL 时自动加载和显示 QML 场景主要源文件.

QQuickView is a convenience subclass of QQuickWindow which will automatically load and display a QML scene when given the URL of the main source file.

所以 QQuickView 是 QQuickWindow 的子类，它管理从 QML 文件显示场景，并且可以轻松使用，例如:

So QQuickView is a subclass of QQuickWindow which manages displaying a scene from a QML file and could be used easily like:

QQuickView *view = new QQuickView;
view->setSource(QUrl::fromLocalFile("myqmlfile.qml"));
view->show();

要在窗口中显示图形 QML 场景，您还可以使用 QQuickWindow 类.

For displaying a graphical QML scene in a window you can also use the QQuickWindow class.

同样来自 Qt 文档:

Also from the Qt documentation:

一个 QQuickWindow 总是有一个不可见的根项目.添加项目到此窗口，将项目重新设置为根项目或现有的场景中的项目.

A QQuickWindow always has a single invisible root item. To add items to this window, reparent the items to the root item or to an existing item in the scene.

所以它可以像这样使用:

So it can be used like:

QQmlApplicationEngine engine;
engine.load(QUrl("myqmlfile.qml"));

QObject *topLevel = engine.rootObjects().value(0);
QQuickWindow *window = qobject_cast<QQuickWindow *>(topLevel);

window->show();

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