[PyQt] Re: how to show interactive Picture

[Markus Feldmann]

David Boddie schrieb:
> On Tue Feb 10 15:02:13 GMT 2009, Markus Feldmann wrote:
> 
>> I think my Problem is that i have to send an envent?
> 
> Yes, you need to make a paint event happen. You can do this by calling
> the update() method on the widget you want to be updated.
> 
>> As you wrote i changed some of my code. I parted my
>> scrollarea, where i want to paint my picture, and my
>> mainwindow, which is a MDI Sub-Widget. The scrollarea
>> will be centered into the MDI Sub-Widget.
>>
>> class ScrollArea(QScrollArea):
>>      def __init__(self, parent=None):
>>          QScrollArea.__init__(self, parent)
>>
>>          self.pen = QPen()
>>          self.brush = QBrush()
>>          self.pixmap = QPixmap()
>>          self.pixmap.load(":/../media/images/aventurien.jpg")
>>
>>      def paintEvent(self,  event):
>>          painter =  QPainter()
>>          painter.begin(self)
>>          painter.setPen(self.pen)
>>          painter.setBrush(self.brush)
>>
>>          painter.save()
>>          painter.drawPixmap(0,  0,  self.pixmap)
>>          painter.restore()
>>          painter.end()
> 
> Looks OK to me.
> 
>> class ReiseHelfer(QMainWindow):
>>      def __init__(self, parent=None):
>>          QMainWindow.__init__(self, parent)
>>
>>          self.setAttribute(QtCore.Qt.WA_DeleteOnClose)
>>
>>          self.createActions()
>>          self.createMenus()
>>          self.createStatusBar()
>>
>>          self.setWindowTitle(self.tr("Reisehelfer"))
>>          self.scrollArea = ScrollArea()
>>          self.setCentralWidget(self.scrollArea)
>>
>>          self.readSettings()
> 
> Does this work? Does it cause the errors you reported in your other message?
> 
> David

Yes it works, but with no Picture.
I am reading an example in
/usr/share/doc/python-qt4-doc/examples/painting/basicdrawing

And the example is a little bit different.
It is doing something with the paintevent i think.

It is useful to post my whole Code?

Regards Markus