From: Fons Rademakers (
Date: Sun Nov 21 2004 - 19:59:28 MET

Hi Jacek,

    Valery Fine is right and you should not mix Qt and TG classes in the 
same source file. Please, see if you can re-organize your code, either use 
a TGButton or a QButton. If you are only interested in using the Qt 
TVirtualX backend then there is no need to include any Qt header files at 
all, just use TG and the widgets will be rendered, low level, by Qt via the 
libRQt plugin.

Cheers, Fons.

Jacek M. Holeczek wrote:
> Hi,
>>I assume that you would like to see these files visible somewhere
>>from our VMC pages?
> We've already talked about modifying the "howto" with Ivana ...
> I proposed (she agreed) ... that we wait one or two month to gain some
> more experience with it, before we really "advice" people to follow it.
> In the meantime, people who need it NOW can use my roottalk mail(s) to get
> it running NOW.
> We also strongly hope that our G4 modifications will go to the G4
> mainstream development. There should be a new G4 release in a couple of
> weeks. Once we also know whether they took it or not, we can also advice
> people how to proceed with the "newest" G4 (7.0) ...
> (Basically, I volunteered to modify the "howto" then :-)
> What concerns Qt "emit" ... it is clearly a Qt problem. I doubt, however,
> that they will care ... especially for Qt releases that are already on the
> market ...
> You said it yourself ... it takes some minutes to install ROOT, but it
> takes some hours to install Qt ...
> I still think there is an easy way to "protect" root against this problem.
> And it costs nothing ...
> (Note here : I'm not a Qt fan ... I just occasionally need to use it.
> I will NOT then try to get in touch with trolltech to inform them that
> there is a problem. I think, someone who likes Qt and works with it daily
> should do this ...)
> Best regards,
> Jacek.

Org:    CERN, European Laboratory for Particle Physics.
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