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我在MFC中工作,我有我自己的模板類(CDFAObList),它是從CObList派生的,並且可以接受從CObject派生的我自己的類(CDFAObject)的成員。我需要重寫爲CDFAObList編譯器生成的拷貝構造函數,因爲它最終作品的方式,以CObject的,裏面有私人複製和分配功能,給了我這樣的:重寫CObList的複製構造函數MFC
1>error C2248: 'CObject::CObject' : cannot access private member declared in class 'CObject'
1>see declaration of 'CObject::CObject'
1>see declaration of 'CObject'
1>This diagnostic occurred in the compiler generated function 'CObList::CObList(const CObList &)'
它甚至給了我上面的錯誤,雖然我重寫構造函數並在CDFAObject中重載賦值運算符。但是,當我試圖來覆蓋CDFAObList拷貝構造函數,我得到以下編譯器錯誤:
1>error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
1>see reference to class template instantiation 'CDFAObList<T>' being compiled
這裏是我的模板類:
#include "DFAObject.h"
#include "DFAManDoc.h"
#include "DFAManTreeView.h"
template<class T> class CDFAObList : public CObList
{
public:
CDFAObList(void) { }
CDFAObList(CDocument* pDoc,CTreeCtrl* pTree, xml_document* pXmlDoc)
{
doc = pDoc;
Tree = pTree;
xmlDoc = pXmlDoc;
}
// problem copy constructor
CDFAObList(const CDFAOblist<T>& toCopy)
{
doc = toCopy.doc;
Tree = toCopy.tree;
xmlDoc = toCopy.xmlDoc;
for (int i = 0; i < toCopy->GetSize(); i++)
{
this->AddHead((T*) toCopy->GetTail());
}
}
protected:
CDocument* doc;
CTreeCtrl* Tree;
xml_document* xmlDoc;
};
我以前從未使用過類模板,所以我米可能會做一些錯誤的事情。在此先感謝您的幫助。
代替謝謝!這幾乎解決了我的問題,我只需要將'toCopy'上的' - >'運算符更改爲'.'運算符:) – aguazales