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    <p>You can definitely use type_traits for this. Throw in a compile-time assert and you'll have it. Here's some code that should work:</p> <pre><code>#define PARENTCHECKER_THING(__TYPE,__BASE) \ inline void WastedFunc() \ { COMPILE_ASSERT( (std::is_base_of&lt;__BASE,__TYPE&gt;().value == true) ); } #define COMPONENT(__TYPE) \ bool __TYPE##SomeFunc(bool val) { return val; } \ bool __TYPE##SomeOtherThing(bool val) { return val; } #define COMPONENT_DERIVED(__TYPE,__BASE) \ bool __TYPE##SomeFunc( bool val) { return val; } \ bool __TYPE##SomeOtherThing(bool val) { return val; } \ PARENTCHECKER_THING(__TYPE,__BASE); class Base { COMPONENT(Base); int baseData; }; class NOT_Base { COMPONENT(NOT_Base); int garbage; }; class Child : public Base { protected: COMPONENT_DERIVED(Child,NOT_Base); float childData; }; </code></pre> <p>Admittedly, the base checker only needs to some base class and not the <em>immediate</em> base. I suppose I could have also been a little more clever about not adding a bogus function in there. It should be dead-stripped though.</p> <p>Hope this helps!</p> <p>EDIT: Hmmm...I missed the sentance in the middle where you called this out as a problem. How about this then:</p> <pre><code>#define PARENTCHECKER_THING(__TYPE,__BASE) \ inline void WastedFunc() \ { COMPILE_ASSERT( (std::is_same&lt; std::common_type&lt;__BASE,__TYPE&gt;()::type, __BASE &gt;().value == true) ); } </code></pre> <p>Essentially, "Assert if the common type of the base and the child is something other than the base". Unfortunately, I don't have a copy of VS2010 handy, and VS2008 doesn't support common_type&lt;>.</p>
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    1. POTrouble verifying that my super class or base class is what a macro or template claims it to be
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    1. USJason Weiler
    1. USJason Weiler
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    1. COThis will work for many cases, but in the exact case I have above it will fail. `is_base_of<ComponentBase, ComponentDerived2,>::value` is true. I'm really looking for a `is_parent_class_of` or `is_super_class_of`. :)
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      1. USJohn Jensen
    2. COYeah, I saw that shortly after I posted initially. Damn my skimming eyes! Ok...edit edit edit...how's that? :-)
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      1. USJason Weiler
    3. COHmm, I think this will work. However: 1. C++11's stdlib doesn't seem to be in a working state in Xcode, so I can't use standard library features; and, 2. clang doesn't currently seem to support decltype and I can't use boost, so I don't think I can actually get this to work for me. :(
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      1. USJohn Jensen
 

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