Apple newbie can't even get off the ground

[GreatBigBore]

I've managed to compile and run Apple's Cocoa sample application, "CurrencyConverter". Now I want to start playing with it a bit, but I'd like to use C++ for now, rather than dealing with the complication of learning a new language. I have an example app from Apple, "SimplePlayThru", which uses both Cocoa and C++ with no problem, but I can't figure out how to add C++ code to CurrencyConverter, although I've done all the same things (as far as I can tell) as SimplePlayThru. The compiler acts like it doesn't recognize the word "class". Is this a mistake that everyone makes when learning how to write Apple code?

When the compiler sees:

class RobObject
{
public:
RobObject();
~RobObject();
};

It says, "parse error before 'RobObject'", on the first line.

[OneSadCookie]

Make sure that you've put the C++ code into a file that the compiler will recognize as C++ -- .cpp is the most common extension. If you need to mix ObjC and C++, you'll need to use .mm. Remember that code in header files is effectively in every file it's included in, so it needs to compile as all those languages.

[Accolon]

I guess OneSadCookie's advice will help you, but why don't you want to use ObjC? It has advantages (and of course) disadvantages, but ObjC is really a small superset of C and you'll learn it in less than an afternoon. Chapter 3 in Hillegass' book i.e. teaches you all you'll need to beginn with and I guess there are 'quicker' ways on the net to dig in ObjC than Apple's own big ObjC book.

IMO, the heavy part is actually learning Cocoa, not ObjC...

[GreatBigBore]

Thanks, OneSadCookie. I changed .m to .mm, and everything works great. Thanks so much. Do you know of any good samples of Cocoa applications that have lots of C++ in them?

[Taxxodium]

Do you know of any good samples of Cocoa applications that have lots of C++ in them?

There are quite a lot of them, including Safari (the WebKit framework is C++ I believe). The list usually contains games but there other apps too.

If you mean sample code, take a look at this (http://developer.apple.com/samplecode/Cocoa_With_Carbon_or_CPP/Cocoa_With_Carbon_or_CPP.html)

[akb825]

My program Fractographer (http://www.akb825.com/fractographer.php) is written with Cocoa contains a lot of C++, and the source is also available.