2-3 programmer-years seems a lot to me already.
-Laurent.
--
Laurent Daudelin
laur...@nemesys-soft.com <mailto:laur...@nemesys-soft.com>
Skype: LaurentDaudelin
Logiciels Némésys Software
http://www.nemesys-soft.com/ <http://www.nemesys-soft.com/>
> On Oct 15, 2019, at 13:27, Turtle Creek Software via Cocoa-dev
> <cocoa-dev@lists.apple.com> wrote:
>
> We did put 2 or 3 programmer-years into a Cocoa GUI. Problem is, it
> appears that it will need 2 or 3 more. There probably won't be enough Mac
> buyers left in 2 or 3 years to pay for that.
>
> I agree that QT, wxWidget and Electron build crappy apps. And some effort
> will always be required to interface between one's working code, and the
> GUI layer. It's just a matter of making that effort small enough so one
> can bring a product to market fast enough and cheaply enough to get paid
> decently for the work.
>
> MVC is an excellent design paradigm. The M and V layers were no problem at
> all to set up. The C started out easy, but ended up being a big problem.
> Quite a bit of the business logic is not just data, but fancy stuff that
> happens with the GUI. Fields that switch between % and $, table cells that
> change other table cells, etc. There is a lot of code in our C++
> RecordViewer classes to make that happen, and it didn't integrate easily
> with NSWindowControllers or NSViewControllers. It often was faster to just
> redo the logic in Cocoa. That took a lot of time. Much more rewriting than
> expected.
>
> Within source files, Objective-C++ is fantastic. It really makes Cocoa
> coding easy for C++ programmers. We were surprised about how well it
> worked. I probably didn't mention Obj-C++ because it became second nature
> so quickly. If all parts of Cocoa were like that, we would have finished
> by now.
>
> The basic language problem as I see it is in the headers. Classes are
> either Obj-C or C++ and can't be both. It turned out to be an enormous
> barrier that caused all sorts of pains.
>
> Casey McDermott
> TurtleSoft.com
>
>
>
> On Tue, Oct 15, 2019 at 12:20 PM Jens Alfke <j...@mooseyard.com> wrote:
>
>>
>>> On Oct 15, 2019, at 6:59 AM, Turtle Creek Software via Cocoa-dev <
>> cocoa-dev@lists.apple.com> wrote:
>>>
>>> TurtleSoft has a big investment in C++ source code that's full of
>>> construction business logic. Unfortunately, with the death of Carbon its
>>> future value is in doubt.
>>
>> I know I’ve brought up Objective-C++ to you here before, but I’m not sure
>> you registered its existence, based on comments like this.
>>
>> Any well-designed app keeps the data model and core business logic
>> separate from the UI. So having that logic in C++ is not a big problem.
>>
>> As for the UI code, I’ve still never found a cross-platform UI framework
>> that creates decent apps. Qt is hideous, and Electron results in immensely
>> bloated websites-in-a-box. So to do a good job, you need to code the UI for
>> each platform anyway.
>>
>> —Jens
>>
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