[PyQt] QWebView in QGraphicsScene - drag and drop issue

[Phil Thompson]

On Mon, 06 Apr 2009 14:09:01 -0500, Tom Batkiewicz
<tom.batkiewicz at priority5.com> wrote:
> Hello all,
> 
> I get a hard crash with the following code if you drag/drop inside a 
> QWebView that is being rendered inside of a QGraphicsScene.
> The trick is that it functions properly if you use addWidget() to 
> directly put the widget into the scene, but if you create the proxy 
> yourself and call setWidget() before adding the proxy to the scene you 
> get the crash.
> 
> ----
> import sys, os
> from PyQt4 import QtGui, QtCore, QtWebKit, QtOpenGL
> 
> def main():
>    app = QtGui.QApplication(sys.argv)
>    browser = QtWebKit.QWebView()
>    view = QtGui.QGraphicsView()
>    view.setViewport(QtOpenGL.QGLWidget())
>    scene = QtGui.QGraphicsScene()
>    view.setScene(scene)
>    browser.setUrl(QtCore.QUrl('http://www.google.com'))
>   
>    ## This fails
>    proxy = QtGui.QGraphicsProxyWidget(None, QtCore.Qt.Widget)
>    proxy.setWidget(browser)
>    scene.addItem(proxy)
>   
>    ## This works
>    #proxy = scene.addWidget(browser)  
>   
>    view.show()
>   
>    app.exec_()
>   
>    sys.exit()
> 
> if __name__ == '__main__':
>    main()
> ----
> 
> I wrote some duplicate code in C++ to test Qt directly but that code 
> functioned without error (both code paths) hence I'm here.
> To duplicate, after running, click and drag the main google image or 
> some text (any website or html will generate it as far as I can tell) 
> and you should crash.
> If you switch the comments to remove the manually created proxy section 
> and instead use addWidget() it should eliminate the crash.
> 
> Subclassing QGraphicsProxyWidget is something I need to do so the 
> addWidget() approach isn't going to work for me.
> If someone can duplicate this or point out what I'm doing wrong I'd 
> appreciate it. Thanks!

I can't reproduce it with current snapshots.

Phil