是否有任何QML窗口UI完全构造信号？

I've found this, but it is only about QWidget based project. What about ApplicationWindow components in QML?

我发现了这个,但它只是关于基于QWidget的项目。 QML中的ApplicationWindow组件怎么样?

1 个解决方案

#1

Finally I've connected to frameSwapped signal of the main top-level QQuickWindow of my application. It is called right after each repainting is done. So, after first repainting, my slot would be called, and I will start to really load the data (what is rather slow). Inside this slot I'm destroying this connection, so I don't slow down the application.

最后我连接到我的应用程序的主要*QQuickWindow的frameSwapped信号。每次重新粉刷完成后立即调用。因此,在第一次重新绘制之后,我的插槽将被调用,我将开始真正加载数据(这是相当慢的)。在这个插槽里面我正在破坏这个连接,所以我不会减慢应用程序的速度。

//main.cpp
QQuickWindow* mainWindow =
    qobject_cast<QQuickWindow*>(engine.rootObjects().first());
QMetaObject::Connection loadingFinished =
    QObject::connect(mainWindow, SIGNAL(frameSwapped()),
                     &controller, SLOT(construct()));
controller.setConnection(loadingFinished);

//Controller.cpp
void Controller::construct() // this is slot
{
    // some really long operation
    disconnect(*m_loadingFinished);
}

Hope it will be helpful for someone.

希望它对某人有所帮助。