[vtkusers] Problem QVTKWidget using vtkCarbonRenderWindow instead of vtkCocoaRenderWindow

[clinton at elemtech.com]

Nearly all the Mac specific code in there is for Carbon, and works around 
Carbon limitations.
Its probably going to be more like replacing the 
#ifdef Q_WS_MAC 
with a flag that indicates a Mac/Carbon Qt, and only call that code with 
Carbon.  Ideally, that flag would come from something like qglobal.h.  If 
not, we should ask Trolltech to put a #define in there to help people switch 
from Carbon to Cocoa.
At that point, it should theoretically work with Cocoa.

Clint

>
> Elvis, you are _probably_ in brand new territory at this point. I
> certainly have not tried anything with Qt 4.5 (I don't have the time),
> let alone with VTk thrown into the mix.
>
> Theoretically all you should have to do is Build Qt 4.5. Build VTK with
> Cocoa support instead of Carbon Support. The rest _should_ work. Let the
> list know what you find out.
>
> Mike
> 
> Elvis Dowson wrote:
> > Hi Mike,
> >                    There is an alpha release of Qt-4.5 on the troll
> > tech website. Here is the link:
> > http://trolltech.com/company/newsroom/announcements/press.2008-06-09.7117
> >549806/?searchterm=Qt%204.5
> >
> >
> > Could you guide me on what I should do to modify vtk to support Qt-4.5
> > using Cocoa? I'm basically trying to get the QVTK plugin to compile
> > correctly and use the Cocoa framework.
> >
> > Best regards,
> >
> > Elvis Dowson
> >
> > On Sep 23, 2008, at 5:36 PM, Mike Jackson wrote:
> >> Qt 4.5 will be based on Cocoa (That is the current news from TT). Qt
> >> 4.4 is CARBON based so you will have to build VTK using Carbon=ON if
> >> you want to use Qt. As far as supporting Cocoa/Qt in the future I am
> >> not sure if anyone has really looked at it yet. _IF_ TrollTech does
> >> deliver Qt/Cocoa for Qt 4.5 then the test is pretty simple. If the Qt
> >> Version is less than 4.5 then use Carbon. If it is 4.5 or above use
> >> Cocoa. This can be detected in CMake and set accordingly.
> >>
> >> Q_WS_MAC is defined by Qt in its header files.