error using CArray

Question

so, i am trying to use CArray like this :

 CArray<CPerson,CPerson&> allPersons;
   int i=0;
   for(int i=0;i<10;i++)
   {
      allPersons.SetAtGrow(i,CPerson(i));
      i++;
   }

but when compiling my program, i get this error :

"error C2248: 'CObject::CObject' : cannot access private member declared in class 'CObject' c:\program files\microsoft visual studio 9.0\vc\atlmfc\include\afxtempl.h"

I don't even understand where this is coming from.

HELP !

Answer 1

Do you mean to say CArray<CPerson> allPersons; ? I don't know how leaving out the contained type would lead to the reported error, but...

Answer 2

Is CPerson derived from CObject? Does it have a private constructor? Your use of SetAtGrow() seems correct to me otherwise.

If that doesn't work, you might try falling back to using the Add() function, as your loop doesn't seem to require SetAtGrow().

Answer 3

Are you using any of the Copy constructor or assignment operator of CObject ? ( CArray is derived from CObject)

For instance:

 CArray<CPerson,CPerson&> allPersons;  

//do something

// This gives the error C2248, cannot access Copy constructor of CObject.
CArray<CPerson,CPerson&> aTemp = allPersons;

OR

Are you doing this?

CArray<CPerson,CPerson&> allPersons; 
...
CArray<CPerson,CPerson&> aTemp;

//Error, as Assignment operator is private
aTemp = allPersons;

EDIT: If you want to copy the elements in CArray, write a helper method CopyArray() and copy the elements manually.

CopyArray(sourceArray, DestArray&)
{
 for each element in SourceArray
 add the element to DestArray.
}