On Jun 17, 2008, at 10:00 AM, Josh de Lioncourt wrote:
Hi all,
Thanks for the responses yesterday. They were quite helpful.
However, they have led me down a number of other rivers of thought,
and it seems that there should be a better way to handle the
projects I'm working on than what I had originally planned. I have
two main questions. The first is a simple one: is there a good,
large repository of sample/open source code specifically in OBJC and/
or C++, in XCode Project form, specifically for Mac development?
I've found some small repositories, but nothing that has been very
useful. I learn much better from dissecting projects.
The second question is: Is the approach I had laid out the best
one? It is as follows:
I have a number of WIndows applications that need to be rewritten.
I want them to be easily compiled under XCode and Visual Studio.net.
To that end, the bulk of the application logic will be rewritten in C
++, a language with which I have had passed experience and which I'm
currently brushing up on. Precision timing, keyboard input, and
limited GUI will be written platform specific. If I understand
correctly, there is absolutely no way to do this in XCode without
using Objective C. C++ cannot do any of these three. (Please
correct me if I am wrong.) This should require me to use a mix of C+
+ and Objective C (Objective C++) in XCode, through .mm files. The C
++ code will, when necessary, need to call upon the ObjC functions/
objects/methods/etc. I understand that classes/objects cannot
inherit/be derived from those of the other language.
This has posed a new problem, though. My familiarity of Objective C
is limited, and I am disinclined to spend a large amount of time
learning yet another language strictly to accomplish these three
tasks within the confines of a mainly C++ project.
Because the project has virtually no GUI, relying mainly on an audio
interface, I'm wondering if there's techniques in C++ to, at the
very least, generate a simple window for the application, as well as
performing the other tasks that does not require Objective C.
Another option might be to locate some open source code I can draw
understanding from for just these three tasks in Objective C.
...or maybe someone out there knows a better solution?
Hi Josh,
Just my opinion, but I have written cross-platform apps recently. Your
approach sounds basically good. Use the Boost libraries as much as you
can in your C++ code because they are cross platform, and may help you
avoid implementing certain things (filesystem stuff, for instance)
separately on each platform. Define a very clear API for your C++ code
that will be used by the native code on each platform. (It helps to
think of your C++ code as a library that you link against on each
platform.)
For the Mac side, get "Cocoa Programming for Mac OS X" by Aaron
Hillegass. I assume there is a current version that corresponds with
Xcode 3. You will need this because the way the GUI part of a Mac app
is put together is frankly difficult to get your head around when
you're new at it. Learn Objective-C. It's not hard, given your
background, and you really do want to use the native tools to build
your GUI, even if it's simple (and Cocoa is really very cool). I also
use it to build an adapter between my C++ API and my Obj-C app code.
If all you need is a command line app, then just use C++ and treat the
OS like the Unix system that it (mostly) is. Works great.
Best regards,
Rush
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