Wish to access previous CDocument items when a new one is opened in MFC.

I open a new document, but I need access to the previous document. I can Close and Save the previous document, but I simply can't get access to the objects in that document.

I have attached the code below

Code:

---

BOOL CVSTADoc::OnOpenDocument(LPCTSTR lpszPathName)
{   
    if (!CDocument::OnOpenDocument(lpszPathName))
        return FALSE;
    POSITION myPos = GetDocTemplate()->GetFirstDocPosition();
    CDocument *myDoc = GetDocTemplate()->GetNextDoc(myPos);
    if (myDoc != this)
    {
            /* Need code for this */
    }
    return TRUE;
}

---

Now I have an Array in CVSTADoc which I need access to and that document is on "myDoc" position in the if condition.
Any help?

You just need to access it as a normal object, but as your the same class type, the compiler assumes you know what your doing so you can access all the variables as if they are public.

Code:

---

if (mydoc != NULL)
{
m_myArray = myDoc->m_myArray; // works if its a vector
// otherwise do a manual copy
}

---

CVSTADoc is derived from CDocument. The array I want say "m_myArray" is an object in CVSTADoc class. myDoc on the other hand is a CDocument.

After using your code this is the error I got...

error C2039: 'm_myArray' : is not a member of 'CDocument'

essentionally

Code:

---

myDoc->m_myArray

---

is not legal.

You just need to cast myDoc to the appropriate type.

Ok, Im really new to MFC.

by casting do you mean something like this?

Code:

---

CVSTADoc *pDoc = (CVSTADoc) myDoc;

---

It doesn't work.

Sorry if I sound ignorant, but like I said Im fairly new to MFC.

CVSTADoc *pDoc = (CVSTADoc*) myDoc;

Note the * in the cast.