receiver type *** for instance message is a forward declaration...

How do you forward declare header files?...

Forward declare a struct in C...

Allowing access to protected member function for class outside of namespace...

Does forward declaration fully remove the need for any #including for pointer types?...

mutually dependent local classes (or mutually recursive lambdas)...

Are function propotypes obsolete in c++...

In C++, how do I fix a pointer class's variable becoming a nullptr when I call it?...

Is the size of an object needed for creating object on heap?...

invalid application of ‘sizeof’ to incomplete type...

Avoiding circular references with forward declarations, but unable to access class members...

Calling member method of cyclic dependent classes...

Error in making Template with Forward Declaration of functions in C++...

Default parameters and forward declaration...

C++ Two Classes Template Methods Reference (Not Compose) Each Other...

Redefinition of 'ClassName' as different kind of symbol in generated header...

C++: How can I forward-declare derived classes that appear in a static method of a base class?...

Unexpected template instantiation when passing a pointer argument...

How to derive from incomplete class in C++...

Why is there no forward declaration in concepts c++?...

Does int main() need a declaration on C++?...

Mutually dependent structs in C...

What's the correct in templated class forward function declaration, operator> overloading...

Why does friend function not able to access private variables of a class?...

Forward declaration of types MatrixXd & VectorXd?...

Referencing an anonymous struct in itself...

Declare a static function but implement it without the 'static' keyword in C?...

"Implicit instantiation of undefined template" when forward declaring template class...

Can't allocate class with forward declared value in std::map member variable...

c++ "Incomplete type not allowed" error accessing class reference information (Circular de...