Error C2027 Msdn
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Error C2027 Use Of Undefined Type Template
Samples We’re sorry. The content you requested has been removed. You’ll be auto redirected in 1 c++ use of undefined type forward declaration second. C/C++ Building Reference C/C++ Build Errors Compiler Errors C2001 through C2099 Compiler Errors C2001 through C2099 Compiler Error C2027 Compiler Error C2027 Compiler Error C2027 Compiler c2027 forward declaration 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 C2019 Compiler Error
C2227
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 Compiler Error C2084 Compiler Error C2085 Compiler Error C2
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Pointer To Incomplete Class Type Is Not Allowed
Microsoft Student Partners ISV Стартапам TechRewards Мероприятия Сообщество Журнал MSDN Форумы Блог Технические консультанты Канал Channel 9 https://msdn.microsoft.com/en-us/library/6c2dk0ah.aspx Документация API и справочники Центры разработки Более не поддерживаемое содержимое Примеры кода Приносим извинения. Запрошенное содержимое было удалено. Вы будете автоматически перенаправлены через 1 секунду. MSDN Library MSDN Library MSDN Library MSDN Library Средства разработки https://msdn.microsoft.com/ru-ru/library/6c2dk0ah(v=vs.80).aspx Mobile and Embedded Development Разработка на .NET Разработка решений Office patterns & practices Microsoft Azure Серверы и средства разработки на уровне предприятия Веб-разработки Технические статьи TOC Свернуть оглавление Развернуть оглавление Эта документация перемещена в архив и не поддерживается. EN Данное содержимое не доступно на вашем языке, используйте версию на английском языке. Эта документация перемещена в архив и не поддерживается. Compiler Error C2027 Visual Studio 2005 Другие версии Visual Studio 2015 Visual Studio 2013 Visual Studio 2012 Visual Studio 2010 Visual Studio 2008 Visual Studio .NET 2003 Error Message use of undefined type 'type' A type cannot be used until it is defined. To res
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 About Us Learn more about Stack Overflow the company Business http://stackoverflow.com/questions/2250408/getting-undefined-class-type-error-but-i-did-create-the-class-and-defined-it 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 Getting undefined class type error but I did create the class and defined it up vote 0 down vote favorite Im working on an use of assignment for one of my classes. Simply I have a GumballMachine class and a bunch of State classes that change the state of the GumballMachine. Here is the offending code: class GumballMachine; class State { public: virtual void insertQuarter() const = 0; virtual void ejectQuarter() const = 0; virtual void turnCrank() const = 0; virtual void dispense() const = 0; protected: GumballMachine *GBM; }; class NoQuarterState : public State { public: NoQuarterState (GumballMachine *GBM) { use of undefined this->GBM = GBM; } void insertQuarter() const { cout << "You inserted a quarter\n"; **this->GBM->QuarterInserted();** // <--- C2027 error on MSDN } }; Now further below I have defined my GumballMachine class as: class GumballMachine { public: GumballMachine(int numOfGB) { this->noQuarterState = new NoQuarterState(this); this->soldOutState = new SoldOutState(this); this->hasQuarterState = new HasQuarterState(this); this->soldState = new SoldState(this); this->winnerState = new WinnerState(this); this->count = numOfGB; if (0 < numOfGB) { this->state = this->noQuarterState; } else { this->state = this->soldOutState; } } ... more code ... void QuarterInserted() { this->state = this->hasQuarterState; } ... more code ... protected: int count; NoQuarterState *noQuarterState; SoldOutState *soldOutState; HasQuarterState *hasQuarterState; SoldState *soldState; WinnerState *winnerState; State *state; }; Visual Studios was throwing a C2259 and C2027 error but after looking at MSDN I feel like I am doing it right. Maybe I am just tired, but I can't seem to find the error/see what I did wrong. Much thanks to any help. :D c++ visual-studio visual-studio-2008 visual-c++ share|improve this question asked Feb 12 '10 at 8:16 Chris 312 You probably shouldn't get in the habit of placing this-> in front of everything; it's cluttering. –GManNickG Feb 12 '10 at 8:39 add a comment| 4 Answers 4 active oldest votes up vote 4 down vote accepted You cannot access any members of GumballMachine before you define the class, so you'l