This forward declares the typedef identifier and the struct tag at the same time. Just put such forward declarations of all your struct before the real declarations. As long as you only use pointers to these struct inside the declarations everything should be fine, then. nitpick: names with ...
循环typedef是指在C/C++中定义两个或多个结构体或类,它们之间相互引用对方作为成员变量,从而导致编译错误。为了打破循环typedef,可以采用以下几种方法: 前向声明(Forward Declaration):在一个结构体或类的定义之前,使用关键字"struct"或"class"进行前向声明,从而告诉编译器该结构体或类的存在。这样可以解决循环typedef...
1 Forward declaration of anonymous typedef struct C++ -2 Typedef Redefinition error Related 4 forward declare typedef'd struct 6 Error when forward declaring a struct: "has a previous declaration here" 13 struct forward declaration fails compile 5 error: forward declaration of st...
另一种解决方案是将前向声明和 typedef 放入单独的标头中,并包括: // ForwardDeclarations.h #pragma once namespace Foo { struct Bar; typedef Bar Baz; } // SomeFile.h #include "ForwardDeclarations.h" Foo::Baz baz; 当然,这实际上并没有减少要包含的文件数量,编译器仍然必须从磁盘读取这个文件,但...
struct _StateMachine : public boost::msm::front::state_machine_def<_StateMachine> { MyClass parent_; public: _StateMachine(MyClass& p_parent); }; typedef boost::msm::back::state_machine<_StateMachine> StateMachine; 其中boost::msm::back::state_machine定义为: ...
structmystruct {inti;doublef; } ;typedefmystruct myotherstruct;//the other .cpp filestructmystruct;//OK,this is a correct forward declaration.structmyotherstruct;// error C2371(in vc2k8): 'myotherstruct' : redefinition; different basic types ...
must use 'struct' tag to refer to type 'ANativeWindow' media_status_t AMediaCodec_setOutputSurface(AMediaCodec*, ANativeWindow* surface); ^ /usr/local/Caskroom/android-ndk/15c/android-ndk-r15c/sysroot/usr/include/media/NdkMediaCodec.h:223:29: error: must use 'struct' tag to refer to typ...
c++forward-declaration 4 我不知道如何前向声明一个Windows结构体。这个结构体的定义是: typedef struct _CONTEXT { ... } CONTEXT, *PCONTEXT 我真的不想在这个头文件中引用,因为它会被包含到所有地方。 我尝试过 struct CONTEXT 和 struct _CONTEXT 但都没有成功(在winnt.h中实际结构体中重新定义了基本...
/* forward declaration */ structfoo; /* for pointers, forward declarations are entirely sufficient */ structfoo*pfoo=...; /* ... and then later define its contents */ structfoo{ /* ... */ }; Typedef名称不能在同一范围内重复声明(与C ++相反),它们必须引用现有类型,因此不能用于创建前向...
Hi, You all know typedef typedef struct g { int a; int b; } google; C / C++ 5 1839 typedef issues with VC 8.0 by: tissyrose | last post by: Hi All, I am porting a very large application from VC++ 6.0 to VS 2005. There are many issues I am facing. One of them is ...