How to read a JavaScript event from QtWebEngine?

To read a JavaScript event from QtWebEngine in a Qt application, you can utilize the QWebEngineView class and its signals. Here's an example of how you can achieve this:

1. Include the necessary headers in your Qt application:

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#include <QApplication>

#include <QWebEngineView>

#include <QWebEnginePage>

#include <QWebEngineProfile>

1. Create a QWebEngineView instance and load a web page:

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int main(int argc, char *argv[]) {

    QApplication app(argc, argv);



    QWebEngineView view;

    view.setPage(new QWebEnginePage());

    view.page()->load(QUrl("https://example.com"));



    view.show();



    return app.exec();

}

1. Connect to the QWebEngineView signals to capture JavaScript events:

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// ...



QObject::connect(view.page(), &QWebEnginePage::loadFinished, [&view]() {

    // Execute JavaScript code to capture the desired event

    view.page()->runJavaScript("document.addEventListener('click', function(event) {"

                               "    alert('Clicked!');"

                               "});");

});



// ...

In the above code, we connect to the loadFinished signal of the QWebEnginePage to ensure that the web page has finished loading. Inside the signal handler, we use runJavaScript to execute JavaScript code that captures the desired event. In this case, we've added an event listener for the click event that displays an alert message.

You can modify the JavaScript code within the runJavaScript call to capture different events or perform other actions based on your requirements.

Remember to handle error checking and connect to the appropriate signals for the events you wish to capture from JavaScript.

By following these steps, you can read a JavaScript event from QtWebEngine in your Qt application.