With QtWebkit it is possible to expose C++ objects to Javascript via QWebFrame::addToJavaScriptWindowObject as described in https://stackoverflow.com/a/20685002/595937
Can the same thing be accomplished in Qt 5.4 using QtWebEngine?
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Exporting C++ objects to HTML/JS is not directly possible with QWebEngine.
Instead, the newly introduced QWebChannel provides a bridge between HTML/JS and C++. Have a look at the documentation, especially at the examples. There was also a quite good introductory talk about QWebChannel at this year's Qt Developer Days, which might also be of interest to you. The videos of the talks will go online in a few weeks.
于 2014-12-16T21:19:13.067 回答