QWebPage and multithreading

Question

I have this code:

class TestThread : public QThread
{
public:
    void run()
    {
        QFile file("test.html");
        file.open(QIODevice::ReadOnly);
        QWebPage page;
        page.mainFrame()->setHtml(file.readAll());
        qDebug() << page.mainFrame()->toHtml();
        qDebug() << "\n\n\n\n";
    }
};

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    for(int i = 0; i < 2; ++i)
    {
        TestThread thread;
        thread.start();
        thread.wait();
    }
    return a.exec();
}

And output:

"<html><head>
    <title>My page</title>
  </head>
  <body>
        My content

</body></html>" 





"<html><head></head><body><html>
  <head>
    <title>My page</title>
  </head>
  <body>
        My content
  </body>
</html></body></html>"

In the second pass, there are too many tags. What is workaround? Or where is my mistake?

there's a third html being written somewhere between the two you actually want. — Patrick Bassut, Jul 21 '12 at 20:15
I cannot to edit my post. I get the message: "Your post does not have much context to explain the code sections; please explain your scenario more clearly." :-( — brainstream, Jul 21 '12 at 20:17
If i call frame->setHtml("") i get the content with superfluous tags: "" — brainstream, Jul 21 '12 at 20:29
You're trying to open a file that has been already opened, you do know that right? Cause you're not closing it at all. — Patrick Bassut, Jul 21 '12 at 20:34
I compiled this: http://pastebin.com/93LXx76k and i got it alright. — Patrick Bassut, Jul 21 '12 at 20:36
Are you sure you want sethtml? Maybe what you want is setcontent function? — Matthias, Jul 21 '12 at 20:38
**The text in setHtml is correct**. This code is just example, my real project use other way to posting content to QWebPage. — brainstream, Jul 21 '12 at 20:40
@Patrick Bassut: The file is closed by the QFile destructor. — Troubadour, Jul 21 '12 at 20:41

score 0 · Answer 1 · answered Jul 22 '12 at 08:53

0

I had the issue in the Linux OS. In Windows I got the message "Widgets must be created in GUI thread". But the content in the QWebPage is correct. So, I will not be used QWebPage for my task.

answered Jul 22 '12 at 08:53

brainstream

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QWebPage and multithreading

1 Answers1