Mac Forum / Programming / Mac Programming / April 2006

Hi,

I'm porting more code over to Xcode from Codewarrior and have run into
a new problem with template classes. I have a template class that is
derived from a template class derived from another non-template
class... so it is 3 levels deep. The first derived template class works
fine and I can access members defined in the base class. However, the
higher level template class produces an error when trying to access
members of the base class. This should work.

Am I missing something here? The following code will not compile:

class TestBase {
 public:
    long    mTest;
};

template<typename X>
class TestA : public TestBase {
 public:
    long    TestMeA() { return mTest + 1; } // this is fine
};

template<typename X>
class TestB : public TestA<X> {
 public:
    long    TestMeB() { return mTest + 1; } // compile error: 'mTest' was not
declared in this scope
};

Thanks for any help!

Steven J. Walker
Walker Effects
www.walkereffects.com
steve@walkereffects.com