CSplitterWnd can be child of CFrameWnd classes only.

I have defined a class based on  CView like this :

class CSMSView : public CStaticFrameWnd<CView>
{
   ...
   protected:
     BOOL m_bInited ;
    CSplitterWndEx m_wndSplitter;
    CCreateContext* m_pCreateContext ;
   ....
 
 virtual void OnInitialUpdate();
}

and for some reason , I want to split it into 2 part with :

int CSMSView::OnCreate(LPCREATESTRUCT lpcs)
{

 if (CView::OnCreate(lpcs) == -1)
  return -1;
 
 m_bInited = FALSE ;
 if(lpcs) 
  m_pCreateContext = (CCreateContext*)lpcs->lpCreateParams ;
 else
  m_pCreateContext = NULL ;

 //*/
 return 0;
}

CSMSView::OnInitialUpdate(){

if(m_bInited) return ;
 m_bInited = TRUE ;

if (!m_wndSplitter.CreateStatic(this, 1, 2,  WS_CHILD | WS_VISIBLE ,   AFX_IDW_PANE_FIRST + 10))

 {
  TRACE0("Failed to create nested splitter\n");
  return ;
 }

 if (!m_wndSplitter.CreateView(0, 0, RUNTIME_CLASS(CWnd),
  CSize(175,100), m_pCreateContext))
 {
  TRACE0("Failed to create CContainerView\n");
  return ;
 }
 if (!m_wndSplitter.CreateView(0, 1, RUNTIME_CLASS(CWnd),
  CSize(175, 100), m_pCreateContext))
 {
  TRACE0("Failed to create CContainerView\n");
  return ;
 }

}

Definitions of CStaticFrameWnd and CSplitterWndEx are found in the GUI_Outlook sample .

 m_wndSplitter.CreateView and m_wndSplitter.CreateStatic return TRUE, but Windows in Splitter are absent, why???