'c++ Extract parameter type list from function pointer

Im trying to get the argument types from a function pointer

This should be the working end product

std::function<void(TestAppObject*, MemberFuncArgs<decltype(&TestAppObject::TestMethod)>::InputArgs)> func = &TestAppObject::TestMethod;

Current MemberFuncArgs class

template<typename T>
struct MemberFuncArgs;

template<typename RT, typename Owner, typename ...Args>
struct MemberFuncArgs<RT(Owner::*)(Args...)>
{
    static const size_t ArgCount = sizeof...(Args);
    typedef RT ReturnType;
    typedef Args InputArgs;
};

Compiler throws the error 'Args': parameter pack must be expanded in this context.

I just need a way to extract the Args... type from the function pointer, its probably just a syntax issue that im too dumb to see...

c++functiontemplatesvariadic-templatesparameter-pack


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