C / C++ / MFC

CMainFrame::OnPressMyButton()
{
  CMDIChildWnd *vpChildFrame = MDIGetActive();
  if (vpChildFrame != NULL)
  {
    CDocument *vpActiveDocument = vpChildFrame->GetActiveDocument();
    if (vpActiveDocument != NULL)
    {
      DoSomeStuffWith(vpActiveDocument); // Do your array stuff here.
    }
  }
}

class CYourClass
{
   public:
     char *m_pBuffer;
}


....


CYourClass *p_YC = new CYourClass

char mystring[]="hello world";

// you want to copy mystring's "hello world" into the class:

// the shite way: confusing to look at-
p_YC->m_pBuffer = new char[strlen(mystring)];
strcpy(p_YC->m_pBuffer, (char *) mystring);

// the easy way:
p_YC->SetBuffer( (char *) mystring);