QWebElement 在单独的线程中操作 QWebPage
我在主线程中创建了一个 QWebPage （您无法在其他地方创建它）。我想使用 Qt 4.6 中引入的 QWebElement API 来操作此页面，但在单独的线程中。这样该线程将获取对页面的引用并执行我需要的必要的树遍历和属性更改。
正如 Threads and QObjects 文档页面所解释的那样，操作是不安全的不拥有它们的线程中的 QObject除非开发人员可以确保相关 QObject 在进行此操作时不会处理事件。
现在，这个 QWebPage 也显示在 QWebView 中，但是主线程将在等待工作线程完成时被阻塞（实际上有很多工作线程，在许多不同的页面上工作）。因此，当操作正在进行时，主事件循环将不会运行。
因此，我相信手术是安全的。 我错了吗？我错过了什么吗？我基本上是在请求保证这不会在我脸上爆炸......
I have a QWebPage created in the main thread (you can't create it anywhere else). I would like to manipulate this page using the QWebElement API introduced in Qt 4.6, but in a separate thread. So that thread would acquire a reference to the page and perform the necessary tree walking and attribute changes I need.
As the Threads and QObjects doc page explains, it is unsafe to manipulate QObjects in threads that don't own them unless the developer can ensure that the QObject in question will not be processing events while this manipulation is going on.
Now, this QWebPage is also being displayed in a QWebView, but the main thread will be blocked while waiting for the worker thread to finish (actually many of them, working on many different pages). Hence, the main event loop will not be running while the operation is in progress.
Thus, I believe the operation to be safe. Am I mistaken? Have I missed something? I'm basically asking for reassurance that this will not blow up in my face...
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我确实认为你是对的，而且它是安全的。至少，你让我确信了:)
I do think you're right, and it is safe. At least, you have me convinced :)