[Kwintv] crash in QtVision::SetChannel

[Richard Moore]

Rizsanyi Zsolt wrote:
> 
> On Sunday 27 October 2002 01:54, Dawit A. wrote:
> > > I see some possible solutions to this:
> > > 1) remove this previous channel thing - it is only used for dcop if I
> > > understand it correctly, and I dont see for what it is good for
> >
> > No, do not do that.  It is very simple to fix this problem.  FWIW, the
> > _prevChannel is a feature that allows you to go back to the previous
> > channel by pressing one configurable shortcut key.  By default this is
> > Key_L.  This is the same feature available on many TV sets/Remote
> > controls as go back, Last, recall, previous etc...
> 
> I did not know about that feature.
> 
> > > 3) take care to do '_chan = NULL' when the channel store is deleted (or
> > > that exact channel is deleted) -- this may be impossible
> >
> > And why is this impossible ? Channel is a QObject.  All one has to do is
> > connect to its destroyed signal and reset the local pointer accordingly.
> 
> I'm not that proficient in Qt programming yet... :)

In this case I suspect the easiest answer is just to use a
QGuardedPointer,
that way it will automatically become 0 when required.

Rich.