Error C2079
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Error C2011
C2079 Compiler Error C2001 Compiler Error C2002 Compiler Error C2003 Compiler Error C2004 Compiler Error C2005 Compiler Error C2006 Compiler Error C2007 Compiler Error C2008 Compiler Error C2009 Compiler Error C2010 Compiler Error C2011 Compiler Error C2012 Compiler Error C2013 Compiler Error C2014 Compiler Error C2015 Compiler Error C2017 Compiler Error C2018 Compiler error c2664 Error C2019 Compiler Error C2020 Compiler Error C2021 Compiler Error C2022 Compiler Error C2026 Compiler Error C2027 Compiler Error C2028 Compiler Error C2030 Compiler Error C2032 Compiler Error C2033 Compiler Error C2034 Compiler Error C2036 Compiler Error C2039 Compiler Error C2040 Compiler Error C2041 Compiler Error C2042 Compiler Error C2043 Compiler Error C2044 Compiler Error C2045 Compiler Error C2046 Compiler Error C2047 Compiler Error C2048 Compiler Error C2050 Compiler Error C2051 Compiler Error C2052 Compiler Error C2053 Compiler Error C2054 Compiler Error C2055 Compiler Error C2056 Compiler Error C2057 Compiler Error C2058 Compiler Error C2059 Compiler Error C2060 Compiler Error C2061 Compiler Error C2062 Compiler Error C2063 Compiler Error C2064 Compiler Error C2065 Compiler Error C2066 Compiler Error C2067 Compiler Error C2069 Compiler Error C2070 Compiler Error C2071 Compiler Error C2072 Compiler Error C2073 Compiler Error C2074 Compiler Error C2075 Compiler Error C2077 Compiler Error C2078 Compiler Error C2079 Compiler Error C2081 Compiler Error C2082 Compiler Error C2083 Compile
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Error C2027
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C++ Template Uses Undefined Class
Join them; it only takes a minute: Sign up Error C2079, what order to define classes in up vote 3 down vote favorite 3 I'm getting a compiler error with this header file: #ifndef GAME1_H #define GAME1_H #include "GLGraphics.h" https://msdn.microsoft.com/en-us/library/9ekhdcxs.aspx #include "DrawBatch.h" class GameComponent; class Game1 { private: GLGraphics graphics; GameComponent components; void updateDelegates(); void Run(); }; class GameComponent { private: static int index; protected: Game1 game; public: GameComponent(); GameComponent(Game1 game); void Update(int); void Dispose(); }; class DrawableGameComponent: public GameComponent { private: GLGraphics graphics; DrawBatch drawBatch; public: DrawableGameComponent(); DrawableGameComponent(Game1); void Draw(); }; #endif I see the problem is that Game1 needs the full definition of GameComponent, and that GameComponent needs the full definition of Game1. I had way http://stackoverflow.com/questions/3796555/error-c2079-what-order-to-define-classes-in too much trouble having these in separate headers, so that's why they're together. Is there any way I can do this without completely changing the implementation of one of the classes? Thanks! c++ c2079 share|improve this question edited Sep 26 '10 at 4:31 configurator 21.5k125698 asked Sep 26 '10 at 4:06 Kalypso 66112 add a comment| 3 Answers 3 active oldest votes up vote 10 down vote accepted Think about the computer's memory for a second here. class B; class A { byte aa; B ab; }; class B { byte bb; A ba; }; A x; Now the question the compiler needs to answer is How much space should I reserve for x? Let's see. The first byte of x is byte aa;. Easy enough. That's 1 byte. Next comes B ab;. Let's see what's in there. The first byte of x.ab is a byte bb;. That's 2 bytes for x so far. Next, is a A ba;. Let's see what's in there. The first byte of x.ab.ba is a byte aa;. That's 3 bytes for x so far. And so on and so forth ad infinitum. How big is x? The correct answer is of course *** OUT OF CHEESE ERROR ***. The compiler doesn't actually do this because it knows it can't handle this case - so the syntax doesn't allow circular containment in the first place. Here's a dia
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site http://stackoverflow.com/questions/24386630/error-c2079-how-can-i-handle-this About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Error C2079: how can error c2079 I handle this? up vote 0 down vote favorite When I try including my player.h in battlefield.h this error occurs: error C2079: 'BattleField::firstplayer' uses undefined class 'Player'. Can't really understand why is this happening, I've searched it through the net, and saw the circular pattern problem, but that's not very clear to me. Any help would be appreciated. Player.h: #include