的std :: make_shared給出錯誤我不明白

Question

我有地圖，看起來像這樣：

typedef std::map<PuzzlePartLocation, std::shared_ptr<PuzzleObj>> ComponentsMap; 

現在我試着通過溫控功能設置此地圖元素是這樣的：

void ComponentMadiator::Register(const PuzzlePartLocation puzzlePartLocation,PuzzleObj* puzzleObj) 
{ 
    componentsMap[puzzlePartLocation] = std::make_shared<PuzzleObj>(puzzleObj); 
} 

我只是這樣稱呼它：

PuzzleObj* pPuzzleObjStickLeft = new PuzzleObj() 
pComponentMadiator->Register(1,pPuzzleObjStickLeft); 

PuzzleObj包含類型IImageComponent memeber *
PuzzleObj從基類

繼承，但它給我的錯誤是這樣的：

1>c:\program files\microsoft visual studio 11.0\vc\include\memory(873): error C2664: 'PuzzleObj::PuzzleObj(IImageComponent *)' : cannot convert parameter 1 from 'PuzzleObj *' to 'IImageComponent *' 
1>   Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast 
1>   c:\program files\microsoft visual studio 11.0\vc\include\memory(972) : see reference to function template instantiation 'std::_Ref_count_obj<_Ty>::_Ref_count_obj<PuzzleObj*&>(_V0_t)' being compiled 
1>   with 
1>   [ 
1>    _Ty=PuzzleObj, 
1>    _V0_t=PuzzleObj *& 
1>   ] 
1>   c:\program files\microsoft visual studio 11.0\vc\include\memory(972) : see reference to function template instantiation 'std::_Ref_count_obj<_Ty>::_Ref_count_obj<PuzzleObj*&>(_V0_t)' being compiled 
1>   with 
1>   [ 
1>    _Ty=PuzzleObj, 
1>    _V0_t=PuzzleObj *& 
1>   ] 
1>   d:\dev\cpp\cocos2d-x\cocos2d-x-3.0beta2\cocos2d-x-3.0beta2\projects\neonbreaker\classes\componentmadiator.cpp(23) : see reference to function template instantiation 'std::shared_ptr<_Ty> std::make_shared<PuzzleObj,PuzzleObj*&>(_V0_t)' being compiled 
1>   with 
1>   [ 
1>    _Ty=PuzzleObj, 
1>    _V0_t=PuzzleObj *& 
1>   ] 

Answer 1

std::make_shared<PuzzleObj>爲您創建一個新的PuzzleObj。你需要的是std::shared_ptr<PuzzleObj>(puzzleObj)。因爲它通過將其存儲在容器中的股份所有權puzzleObj

void ComponentMadiator::Register(const PuzzlePartLocation puzzlePartLocation, std::shared_ptr<PuzzleObj> const& puzzleObj); 

，並必須在函數的接口進行通信：

更重要的是

void ComponentMadiator::Register(const PuzzlePartLocation puzzlePartLocation,PuzzleObj* puzzleObj); 

應聲明爲。

，並調用它像這樣：

std::shared_ptr<PuzzleObj> pPuzzleObjStickLeft(std::make_shared<PuzzleObj>()); 
pComponentMadiator->Register(1, pPuzzleObjStickLeft);