Copy Constructor with classmember CArray

I keep getting C2248 error messages in Visual Studio 2005. I have solved previous problems with this error, by creating an copy constructor for CMapLayer. The program is displaying and changing an SVG map. I have CMapLegend, CMapCategory and CMapLayer. These classes represent a legend for a map. The layers of the map are divided into categories.

For drawing the map I have:

Code:

---

for(int iCount1 = 0; iCount1 < Categories.GetSize(); iCount1++) {                 
  CreateCategory(Categories.GetAt(iCount1));                   
  for(int  iCount2 = 0; iCount2 < Categories.GetAt(iCount1).GetNumberOfLayers(); iCount2++) {                         
    CreateLayer(Categories.GetAt(iCount1).GetLayerByIndex(iCount2));                 
  }         
}

---

inside CMapLegend::CreateLegend();

Code:

---

class CMapLegend 
{ 
public:         
  CMapLegend(void);         
  ~CMapLegend(void);         
  void CreateLegend(void);         
  void SetVisible(void);         
  void SetInvisible(void);
private:         
  eSVG::CActiveXeSVG svgControl;         
  CArray<CMapCategory, CMapCategory> Categories;
  CString sSvgId;       
  eSVG::CElement CreateLayer(CMapLayer& mapLayer);
  eSVG::CElement CreateCategory(CMapCategory& mapCategory); 
};

---

Code:

---

class CMapLayer 
{ 
public:                 
  CMapLayer(CString sName, CString sSvgId, CString sIconRef, bool bDisplay);                 
  CMapLayer(void);         
  CMapLayer(const CMapLayer& mapLayer); 
  CMapLayer operator=(const CMapLayer& mapLayer);         
  ~CMapLayer(void);         
  void SetVisible(void);         
  void SetInvisible(void);         
  CString GetName(void);         
  CString GetSvgId(void);         
  CString GetIconRef(void);         
  bool GetDisplay(void); 
protected:         
  eSVG::CActiveXeSVG svgControl;         
  CString sName;         
  CString sSvgId;         
  CString sIconRef;         
  bool bDisplay;               
};

---

Code:

---

class CMapCategory : public CMapLayer
{
public:         
  CMapCategory(void);         
  CMapCategory(const CMapCategory& mapCategory);                 
  ~CMapCategory(void);         
  CMapCategory operator =(const CMapCategory& mapCategory);         
  void SetLayersVisible(void);         
  void SetLayersInvisible(void);         
  void AddLayer(const CMapLayer& mapLayer);         
  CMapLayer GetLayerById(void);                 
  int GetNumberOfLayers(void);         
  CMapLayer GetLayerByIndex(int index); 
private:         
  bool bExpanded;                 
  CArray<CMapLayer, CMapLayer> Layers;         
};

---

So where are you getting the error? If something is accessing a private member then check the definitions for all the functions you're using at the error point. Also where is GetAt() defined?

Error 1 error C2248: 'CObject::operator =' : cannot access private member declared in class 'CObject' C:\Program Files\Microsoft Visual Studio 8\VC\ce\atlmfc\include\afxtempl.h 324

The error occurs in CObject of MFC. GetAt is a CArray method for getting an object inside the CArray at a given position.

When I uncomment the CArray lines in following code: the error doesn't occur, so those are the lines:

Code:

---

CMapCategory::CMapCategory(const CMapCategory& mapCategory)  {         
  this->sIconRef  = mapCategory.sIconRef;         
  this->sName    = mapCategory.sName;         
  this->sSvgId    = mapCategory.sSvgId;         
  this->bDisplay  = mapCategory.bDisplay;         
  this->bExpanded = mapCategory.bExpanded;         
  //this->Layers    = mapCategory.Layers;         
}   
CMapCategory CMapCategory::operator =(const CMapCategory& mapCategory)  {         
  CMapCategory newCategory;         
  newCategory.sIconRef  = mapCategory.sIconRef;           
  newCategory.sName    = mapCategory.sName;         
  newCategory.sSvgId    = mapCategory.sSvgId;         
  newCategory.bDisplay  = mapCategory.bDisplay; 
  newCategory.bExpanded = mapCategory.bExpanded; 
  //newCategory.Layers    = mapCategory.Layers; 
  return newCategory;  }

---

Layers is a CArray<CMapLayers, CMapLayers>.

You are not allowed to copy a CArray like that. Use the Copy member function instead.