[vtk-developers] Guidance with dropping Qt 4

[Haocheng Liu]

On Thu, Jul 20, 2017 at 1:59 PM, Elvis Stansvik <
elvis.stansvik at orexplore.com> wrote:

> 2017-07-20 19:37 GMT+02:00 Utkarsh Ayachit <utkarsh.ayachit at kitware.com>:
> > Folks.
> >
> > As I work on dropping Qt 4 support in VTK, I am trying to figure out how
> > best to deprecate old classes.
> >
> > With Qt 5, classes like QVTKWidget, QVTKWidget2, QVTKPaintEngine etc
> don't
> > really make much sense. While they can compile with Qt 5, they won't work
> > well (if at all). I wonder if I should just remove them, rather than mark
> > them as deprecated since they really are not meant to be used with Qt 5.
>
> While I'm all for you guys dropping Qt 4, I think there should be a
> deprecation period for at least QVTKWidget.
>
> It's only recently that we ported our app to the new QVTKOpenGLWidget,
> before that we used QVTKWidget with Qt 5 without any big problems. The
> only real reason for the porting is that we wanted HiDPI working
> properly (and well, it made sense anyway), so I can imagine a lot of
> others are still using QVTKWidget.
>
> +1
Image feature extractor and GrabCut in SMTK&CMB use QVTKWidget. If these
classes are removed, a proper substitution is needed.

> Elvis
>
> >
> > Thoughts?
> >
> > Utkarsh
> >
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-- 
Best regards
Haocheng

Haocheng LIU
Kitware, Inc.
R&D Engineer
21 Corporate Drive
Clifton Park, NY 12065-8662
Phone: 518-881-4421 <(518)%20881-4421>
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