[Fwd: Re: [PyKDE] Typecasting]

[Mark Kimsal]

-------- Original Message --------
Subject: Re: [PyKDE] Typecasting
Date: Mon, 13 Nov 2000 10:18:18 -0500
From: mark kimsal <chugadie.geo at yahoo.com>
Reply-To: mark at tapinternet.com
To: pyqt <pykde at mats.gmd.de>
References: <3A0F54C2.9376C03C at kimsal.com>

I couldn't get your example to work.  This was the error given

QObject::connect: No such signal
QObject::rightButtonClicked(QListViewItem*,constQPoint&,int)
QObject::connect:  (sender name:   'unnamed')
QObject::connect:  (receiver name: 'unnamed')



> 11.11.2000, 01:38, Mark Kimsal wrote:
>
> > Okay, i've been stuck all day on this problem.
>
> > I have a class that subclasses QListViewItem, FTPDirItem.  I populate a
> > QListView with a few instances of FTPDirItem.  When I connect the signal
> > from the containing QListView it requires a pointer to an object of type
> > QListViewItem.  When I try to access object variables inside my SLOT
> > function I get AttributeErrors.  type(myobj) reveals that the program
> > thinks the object is a QListViewItem at that point.  I can access
> > user-defined object methods of FTPDirItem, but whenever I try to access
> > variables I created in the subclasses' __init__() method I get an
> > error.  So my question is how can I typecast this object back into an
> > FTPDirItem inside my SLOT callback function?
>
> This works for me:
>
> import string, sys
> from qt import *
>
> class List(QListView):
>       def __init__(self, *args):
>           apply(QListView.__init__,(self,) + args)
>           self.addColumn("A")
>           self.addColumn("B")
>           self.itemList = []
>           self.data = (['1','2'], ['11','12'],['2','3'])
>           self.connect(self, SIGNAL("rightButtonClicked(QListViewItem *, const QPoint &, int)"), \
>                                     self.rbClicked)
>           self.addItems()
>
>       def addItems(self):
>           for row in self.data:
>               item = TestItem(self)
>               self.itemList.append(item)
>               for i in range(len(row)):
>                   item.setText(i, row[i])
>
>       def rbClicked(self, item, point, col):
>           print item.subvar, item.text(0)
>
> class TestItem(QListViewItem):
>       def __init__(self, parent):
>           QListViewItem.__init__(self, parent)
>           self.subvar = 'Test'
>
> a = QApplication(sys.argv)
> mw = List()
> a.setMainWidget(mw)
> mw.show()
> a.exec_loop()
>
> Per