cocos3 error C2440

>d:program files (x86)microsoft visual studio 11.0vcincludexrefwrap(431): error C2440: “return”: 无法从“void”转换为“bool” (..ClassesHelloWorldScene.cpp)
1>          void 类型的表达式不能转换为其他类型
1>          d:program files (x86)microsoft visual studio 11.0vcincludefunctional(239): 参见对正在编译的函数 模板 实例化“_Ret std::_Callable_obj<_Ty>::_ApplyX<_Rx,cocos2d::Touch,cocos2d::Event>(_V0_t &&,_V1_t &&)”的引用
1>          with
1>          [
1>              _Ret=bool,
1>              _Ty=HelloWorld::init::<lambda_47d8d039f668b53728fe566a69062bc8>,
1>              _Rx=bool,
1>              _V0_t=cocos2d::Touch *,
1>              _V1_t=cocos2d::Event *
1>          ]
1>          d:program files (x86)microsoft visual studio 11.0vcincludefunctional(239): 参见对正在编译的函数 模板 实例化“_Ret std::_Callable_obj<_Ty>::_ApplyX<_Rx,cocos2d::Touch,cocos2d::Event>(_V0_t &&,_V1_t &&)”的引用
1>          with
1>          [
1>              _Ret=bool,
1>              _Ty=HelloWorld::init::<lambda_47d8d039f668b53728fe566a69062bc8>,
1>              _Rx=bool,
1>              _V0_t=cocos2d::Touch *,
1>              _V1_t=cocos2d::Event *
1>          ]
1>          d:program files (x86)microsoft visual studio 11.0vcincludefunctional(239): 编译类 模板 成员函数“bool std::_Func_impl<_Callable,_Alloc,_Rx,_V0_t,_V1_t>::_Do_call(_V0_t &&,_V1_t &&)”时
1>          with
1>          [
1>              _Callable=_MyWrapper,
1>              _Alloc=std::allocator<std::_Func_class<bool,cocos2d::Touch *,cocos2d::Event *>>,
1>              _Rx=bool,
1>              _V0_t=cocos2d::Touch *,
1>              _V1_t=cocos2d::Event *
1>          ]
1>          d:program files (x86)microsoft visual studio 11.0vcincludefunctional(516): 参见对正在编译的类 模板 实例化“std::_Func_impl<_Callable,_Alloc,_Rx,_V0_t,_V1_t>”的引用
1>          with
1>          [
1>              _Callable=_MyWrapper,
1>              _Alloc=std::allocator<std::_Func_class<bool,cocos2d::Touch *,cocos2d::Event *>>,
1>              _Rx=bool,
1>              _V0_t=cocos2d::Touch *,
1>              _V1_t=cocos2d::Event *
1>          ]
1>          d:program files (x86)microsoft visual studio 11.0vcincludefunctional(516): 参见对正在编译的函数 模板 实例化“void std::_Func_class<_Ret,_V0_t,_V1_t>::_Do_alloc<_Myimpl,_Ty,_Alloc>(_Fty &&,_Alloc)”的引用
1>          with
1>          [
1>              _Ret=bool,
1>              _V0_t=cocos2d::Touch *,
1>              _V1_t=cocos2d::Event *,
1>              _Ty=HelloWorld::init::<lambda_47d8d039f668b53728fe566a69062bc8>,
1>              _Alloc=std::allocator<std::_Func_class<bool,cocos2d::Touch *,cocos2d::Event *>>,
1>              _Fty=HelloWorld::init::<lambda_47d8d039f668b53728fe566a69062bc8>
1>          ]
1>          d:program files (x86)microsoft visual studio 11.0vcincludefunctional(516): 参见对正在编译的函数 模板 实例化“void std::_Func_class<_Ret,_V0_t,_V1_t>::_Do_alloc<_Myimpl,_Ty,_Alloc>(_Fty &&,_Alloc)”的引用
1>          with
1>          [
1>              _Ret=bool,
1>              _V0_t=cocos2d::Touch *,
1>              _V1_t=cocos2d::Event *,
1>              _Ty=HelloWorld::init::<lambda_47d8d039f668b53728fe566a69062bc8>,
1>              _Alloc=std::allocator<std::_Func_class<bool,cocos2d::Touch *,cocos2d::Event *>>,
1>              _Fty=HelloWorld::init::<lambda_47d8d039f668b53728fe566a69062bc8>
1>          ]
1>          d:program files (x86)microsoft visual studio 11.0vcincludefunctional(516): 参见对正在编译的函数 模板 实例化“void std::_Func_class<_Ret,_V0_t,_V1_t>::_Reset_alloc<_Ty,std::allocator<std::_Func_class<_Ret,_V0_t,_V1_t>>>(_Fty &&,_Alloc)”的引用
1>          with
1>          [
1>              _Ret=bool,
1>              _V0_t=cocos2d::Touch *,
1>              _V1_t=cocos2d::Event *,
1>              _Ty=HelloWorld::init::<lambda_47d8d039f668b53728fe566a69062bc8>,
1>              _Fty=HelloWorld::init::<lambda_47d8d039f668b53728fe566a69062bc8>,
1>              _Alloc=std::allocator<std::_Func_class<bool,cocos2d::Touch *,cocos2d::Event *>>
1>          ]
1>          d:program files (x86)microsoft visual studio 11.0vcincludefunctional(516): 参见对正在编译的函数 模板 实例化“void std::_Func_class<_Ret,_V0_t,_V1_t>::_Reset_alloc<_Ty,std::allocator<std::_Func_class<_Ret,_V0_t,_V1_t>>>(_Fty &&,_Alloc)”的引用
1>          with
1>          [
1>              _Ret=bool,
1>              _V0_t=cocos2d::Touch *,
1>              _V1_t=cocos2d::Event *,
1>              _Ty=HelloWorld::init::<lambda_47d8d039f668b53728fe566a69062bc8>,
1>              _Fty=HelloWorld::init::<lambda_47d8d039f668b53728fe566a69062bc8>,
1>              _Alloc=std::allocator<std::_Func_class<bool,cocos2d::Touch *,cocos2d::Event *>>
1>          ]
1>          d:program files (x86)microsoft visual studio 11.0vcincludefunctional(692): 参见对正在编译的函数 模板 实例化“void std::_Func_class<_Ret,_V0_t,_V1_t>::_Reset<_Ty>(_Fty &&)”的引用
1>          with
1>          [
1>              _Ret=bool,
1>              _V0_t=cocos2d::Touch *,
1>              _V1_t=cocos2d::Event *,
1>              _Ty=HelloWorld::init::<lambda_47d8d039f668b53728fe566a69062bc8>,
1>              _Fty=HelloWorld::init::<lambda_47d8d039f668b53728fe566a69062bc8>
1>          ]
1>          d:program files (x86)microsoft visual studio 11.0vcincludefunctional(692): 参见对正在编译的函数 模板 实例化“void std::_Func_class<_Ret,_V0_t,_V1_t>::_Reset<_Ty>(_Fty &&)”的引用
1>          with
1>          [
1>              _Ret=bool,
1>              _V0_t=cocos2d::Touch *,
1>              _V1_t=cocos2d::Event *,
1>              _Ty=HelloWorld::init::<lambda_47d8d039f668b53728fe566a69062bc8>,
1>              _Fty=HelloWorld::init::<lambda_47d8d039f668b53728fe566a69062bc8>
1>          ]
1>          d:	estclasseshelloworldscene.cpp(44): 参见对正在编译的函数 模板 实例化“std::function<_Fty> &std::function<_Fty>::operator =<HelloWorld::init::<lambda_47d8d039f668b53728fe566a69062bc8>>(_Fx &&)”的引用
1>          with
1>          [
1>              _Fty=bool (cocos2d::Touch *,cocos2d::Event *),
1>              _Fx=HelloWorld::init::<lambda_47d8d039f668b53728fe566a69062bc8>
1>          ]
1>          d:	estclasseshelloworldscene.cpp(44): 参见对正在编译的函数 模板 实例化“std::function<_Fty> &std::function<_Fty>::operator =<HelloWorld::init::<lambda_47d8d039f668b53728fe566a69062bc8>>(_Fx &&)”的引用
1>          with
1>          [
1>              _Fty=bool (cocos2d::Touch *,cocos2d::Event *),
1>              _Fx=HelloWorld::init::<lambda_47d8d039f668b53728fe566a69062bc8>
1>          ]

匿名函数没有写返回值。

原文地址:https://www.cnblogs.com/yufenghou/p/4146402.html