Il 21/06/20 13:22, Lars Knoll ha scritto:
We are making use of dynamic_cast and typeid in Qt nowadays, so I guess it’s
high time we adjust the wiki.
In the light of this: has anyone thought of deprecating in Qt 6 the
ad-hoc casting functions like qgraphicsitem_cast, qstyleoption_cast and
so
On Sunday, 21 June 2020 06:44:23 PDT André Pönitz wrote:
> I would appreciate if someone on Windows could run a reality check on that
> with a dynamic_cast between classes that don't have a key function, i.e.
> where everything is inlined and/or templates.
They must have a key virtual function. Bu
On Sun, Jun 21, 2020 at 11:22:58AM +, Lars Knoll wrote:
> We didn’t want it in earlier versions of Qt for mainly two reasons. Early
> implementations had quite an overhead on library size, and dynamic_cast didn’t
> work reliable between DLL boundaries on Windows. Both problems have gone away
>
On Sunday, 21 June 2020 05:35:20 PDT Konstantin Ritt wrote:
> I, for example, didn't know the issue with dynamic_cast across dll
> boundaries is not an issue anymore.
It's never been.
What changed is our understanding of how to make it work across DLL
boundaries. The answer is: ALL classes with
On Sunday, 21 June 2020 08:22:14 PDT Alberto Mardegan wrote:
> On 20/06/20 23:45, Thiago Macieira wrote:
> > No, because it won't catch this:
> >
> > class MyProcess : QProcess
> > {
> > protected:
> > virtual void setupChildProcess();
> > };
> >
> > Note the lack of Q_OBJECT.
>
> But what i
On 20/06/20 23:45, Thiago Macieira wrote:
> No, because it won't catch this:
>
> class MyProcess : QProcess
> {
> protected:
> virtual void setupChildProcess();
> };
>
> Note the lack of Q_OBJECT.
But what is the harm if we don't catch that? It's still better than a
crash, isn't it?
Also, t
Den sön 21 juni 2020 kl 14:37 skrev Konstantin Ritt :
>
> > I think we then had discussions when moving from Qt 4 to Qt 5, that we will
> > start requiring RTTI.
>
> However this was never promoted, and now you're saying people who ported
> their projects with no-rtti to Qt5 had to enable rtti ye
> I think we then had discussions when moving from Qt 4 to Qt 5, that we
will start requiring RTTI.
However this was never promoted, and now you're saying people who ported
their projects with no-rtti to Qt5 had to enable rtti years ago or expect
crashes?)
Thanks to Alberto for pointing this issu
> On 21 Jun 2020, at 13:10, Giuseppe D'Angelo via Development
> wrote:
>
> Il 20/06/20 22:45, Thiago Macieira ha scritto:
>> On Saturday, 20 June 2020 11:31:25 PDT Alberto Mardegan wrote:
>>> I think I missed an announcement about Qt applications having to use
>>> RTTI; on the opposite, I thou
Il 20/06/20 22:45, Thiago Macieira ha scritto:
On Saturday, 20 June 2020 11:31:25 PDT Alberto Mardegan wrote:
I think I missed an announcement about Qt applications having to use
RTTI; on the opposite, I thought that the whole point of QMetaObject was
not to require RTTI support; has this change
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