[PyKDE] QPixmap.grabWidget() damages icons and QFilePreview doesn't work

[Phil Thompson]

On Friday 11 February 2005 7:40 pm, Hans-Peter Jansen wrote:
> On Friday 11 February 2005 19:29, Phil Thompson wrote:
> > On Thursday 10 February 2005 5:04 pm, Hans-Peter Jansen wrote:
> >
> > It seemed to work fine for me (with enablePreview = 0).
>
> Hmm, strange. Thanks for testing.
>
> > > While at it, I discovered the QFilePreview ability, and tried to
> > > add it, but failed. When enabled (set enablePreview = 1), it just
> > > issues a SystemError with this confusing message:
> > >
> > > Traceback (most recent call last):
> > >   File "iconfactory.py", line 165, in saveScreenshot
> > >     fd.setContentsPreview(p, p)
> > > SystemError: error return without exception set
> > >
> > > Puzzled! According to your docs, it is fully implemented.
> >
> > You are creating a Python class that multiply inherits from two C++
> > classes - you can't do that.
>
> From the QFilePreview docs:
>
> This class is an abstract base class which is used to implement
> widgets that can display a preview of a file in a QFileDialog.
> You must derive the preview widget from both QWidget and from this
> class. Then you must reimplement this class's previewUrl() function,
> which is called by the file dialog if the preview of a file
> (specified as a URL) should be shown.
>
> Any idea, how this could be done, while complying with sip's first
> law?

Good point - I'll remove QFilePreview completely.

Phil