Hi,all！
This is my program,it's create a child thread to get the content of a url,but
I got the following error output:
QObject: Cannot create children for a parent that is in a different thread.
(Parent is QWebPage(0x94fa350), parent's thread is QThread(0x93b04a8),
current thread is Thread(0xbff5d33c)
class WebCapture : public QObject
{
Q_OBJECT
public:
WebCapture();
void get(QUrl url);
signals:
void finished();
private slots:
void saveResult(bool ok);
private:
QWebPage m_page;
};
WebCapture::WebCapture(): QObject()
{
QObject::connect(&m_page, SIGNAL(loadFinished(bool)), this,
SLOT(saveResult(bool)));
}
void WebCapture::get(QUrl url)
{
m_page.mainFrame()->load(url);
}
void WebCapture::saveResult(bool ok)
{
if (!ok)
{
emit finished();
return;
}
qDebug() << m_page.mainFrame()->toHtml();//output
emit finished();
}
class Thread : public QThread
{
Q_OBJECT
public:
Thread();
~Thread();
void run();
private:
WebCapture wc;
};
Thread::Thread():QThread()
{
QObject::connect(&wc, SIGNAL(finished()), this, SLOT(jobDone()));
}
Thread::~Thread()
{
}
void Thread::jobDone()
{
printf("exit!");
}
void Thread::run()
{
QUrl url("http://www.google.com/";);
wc->get(url);
exec();
}
#include "test.moc"
int main(int argc, char* argv[])
{
QApplication app(argc, argv);
Thread th;
th.start();
th.wait();
return 0;
}
Zhou Peng
[email protected]
2011-03-23 _______________________________________________
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