Re: [PyQt] QWebView crashes

[Hans-Peter Jansen]

On Monday 04 April 2011, 00:23:59 Hans-Peter Jansen wrote:
> On Sunday 03 April 2011, 22:49:44 Gelonida Gmail wrote:
> > Nokia considers this bug not being their problem, but a webkit
> > issue.
> >
> > Therefore I filed a new bug report for webkit.
> >
> > https://bugs.webkit.org/show_bug.cgi?id=57729
>
> Hi Phil,
>
> I was able to simplify the issue even further, and usually just
> clicking on the homepage link on the login page (after logging in)
> crashes in the JS core, but now, this code crashes reliable in the
> webview.show() line over here:
>
> import sys
> import platform
> import PyQt4.QtGui as QtGui
> import PyQt4.QtCore as QtCore
> from PyQt4.QtWebKit import QWebView
>
> print sys.platform, platform.release()
> print QtCore.PYQT_VERSION_STR,QtCore.PYQT_VERSION
>
> app = QtGui.QApplication(sys.argv)
> webview = QWebView()
> urlstr = "http://facebook.com";
> webview.setUrl(QtCore.QUrl(urlstr))
> webview.show()
> sys.exit(app.exec_())

It's getting stranger and stranger:

the crash happens in an interactive python session only. If saved to a 
file, it's running fine (apart from webkits facebook dysfunction, which 
prevents a successful login (for me at least with:
Qt version: 4.7.1
sip version: 4.12.2-snapshot-ec9807971e08
PyQt version: snapshot-4.8.4-8641ecc135b3
Webkit version: 533.3
Python: 2.6 (linux2, 2.6.31.14-6-desktop)
)).

Even more streamlined version:

import sys
from PyQt4 import QtCore, QtGui, QtWebKit

urlstr = "http://facebook.com";

app = QtGui.QApplication(sys.argv)
webview = QtWebKit.QWebView()
webview.setUrl(QtCore.QUrl(urlstr))
webview.show()
sys.exit(app.exec_())


Attached is a slightly improved variant in python and C++, that would be 
interesting to get output and feedback on various platforms and 
versions for (preferably of those, that own a valid facebook 
account..). 

Login successful?
Crash after click on homepage link?

Pete

#include <QtGui>
#include <QtWebKit/QWebView>
#include <QtNetwork/QNetworkProxyFactory>

#define urlstr "http://facebook.com";

int main(int argc, char **argv)
{
    QApplication app(argc, argv);
    QNetworkProxyFactory::setUseSystemConfiguration(true);
    QWebView *webview = new QWebView();
    // javascript is enabled by default
    //webview->settings()->setAttribute(QWebSettings::JavascriptEnabled, true);
    webview->settings()->setAttribute(QWebSettings::DeveloperExtrasEnabled, true);
    QStringList args = QCoreApplication::arguments();
    QUrl url = QUrl(urlstr);
    if (args.count() > 1)
	url = QUrl(args[1]);
    webview->load(url);
    webview->show();

    return app.exec();
}

webview.py
Description: application/python

CONFIG += qt
SOURCES += webview.cc
TARGET = webview
QT += webkit

_______________________________________________
PyQt mailing list    PyQt@riverbankcomputing.com
http://www.riverbankcomputing.com/mailman/listinfo/pyqt