[Development] A new approach for Qt main()

[Morten Sorvig]

> On 10 Dec 2016, at 01:43, Thiago Macieira <thiago.macieira at intel.com> wrote:
> 
> Em sexta-feira, 9 de dezembro de 2016, às 16:50:29 PST, Matthew Woehlke 
> escreveu:
>> On 2016-12-09 16:23, Thiago Macieira wrote:
>>> Em sexta-feira, 9 de dezembro de 2016, às 15:28:13 PST, Matthew Woehlke
>>> 
>>> escreveu:
>>>> I can work around that, though it's obnoxious. I'm more concerned about
>>>> not being able to tinker with the CLI arguments before Qt gets them.
>>> 
>>> That's a valid concern, but not one that warrants a QApplication subclass.
>> 
>> Right; that one is an issue if the user is no longer in control of
>> instantiating the Q*Application instance.
> 
> Ah, that's a good point.
> 
> Though quite frankly I don't see that as an issue. Applications can only have 
> access to argc and argv if they write the main() function, which means they 
> can continue to use the current functionality.
> 
> I'm imaginiing that this new way is needed for platforms where a main() 
> function makes no sense, in which case there's no command-line to begin with.

That is one use case, another is where the standard way to start the native
platform and event loop is not compatible with the Q*Application on stack and
app.exec() pattern. (See macOS example in the other mail)

Morten