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forward declaration of a class having static member...

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forward declaration of std::string and std::wstring...

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Declare a forwarded class definition in a cpp file, what for?...

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Invalid use of incomplete type "class"...

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forward declaration of a class template including a namespace causes compile-error...

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What is the name for a Pointer like class Bar *bar...

Why is the 'Declare before use' rule not required inside a class?...

Implement C++ class method that draws on multiple other non-inherited classes?...

How to forward declare array size without relying on #define?...

C++ class prototype not working properly?...