C / C++ / MFC

CPropertyPage* page = GetPage(i); <br />
if(page.IsKindOf(RUNTIME_CLASS(CMainPage))) ((CMainPage*)page)->GetList();

class CListPage:CPropertyPage<br />
{<br />
    virtual CParameterList GetList()=0;<br />
    ...<br />
}<br />
<br />
class CMainPage:CListPage<br />
{<br />
   virtual CParameterList GetList(){...}<br />
   ...<br />
}

class A{...};
class B:public A{...};
 
void f(A& a);
 
A a;
B b;
f(a); // uses f(A&);
f(b); // uses f(A&);

class A{...};
class B:public A{...};
 
void f(A& a);
void f(B& b);
 
A a;
B b;
f(a); // uses f(A&);
f(b); // uses f(B&);

DWORD dwEventMask=m_richedit_ayuda.GetEventMask();
dwEventMask|=ENM_REQUESTRESIZE;
m_richedit.SetEventMask(dwEventMask);
m_richedit.RequestResize();

void CYourDlg::OnRichEditRequestResize(NMHDR* pNMHDR, LRESULT* pResult) 
{
  REQRESIZE *pReqResize = reinterpret_cast<REQRESIZE *>(pNMHDR);

  CRect rect(pReqResize->rc); // this is the rectangge you're after
  m_richedit_ayuda.SetWindowPos(NULL,0,0,rect.Width(),rect.Height(),SWP_NOMOVE|SWP_NOZORDER);
  *pResult = 0;
}