the problem of VC view

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VC6

C++

Hi , I want to split the SDI moudle view into three part , howerer it doesn't show within the right way , the height of two top parts is zero , what's wrong ?

I add code in function OnCreateClient:

    CRect rect;
GetClientRect(&rect);
if ( NULL == m_wndSplitter1.CreateStatic( this,2,1 )) return false;
//m_wndSplitter1.CreateView(0,0,  RUNTIME_CLASS(TView), CSize(rect.Width(),rect.Height()-rect.Height()/4), pContext);

m_wndSplitter1.CreateView(1,0, RUNTIME_CLASS(VEDView),CSize(rect.Width()/2,                 rect.Height()/4),pContext);
m_wndSplitter2.CreateStatic( &m_wndSplitter1,1,2 ,WS_CHILD|WS_VISIBLE,m_wndSplitter1.IdFromRowCol(0,0) );
m_wndSplitter2.CreateView(0,0,  RUNTIME_CLASS(TView), CSize(rect.Width()/3,                 rect.Height()-rect.Height()/4), pContext);
m_wndSplitter2.CreateView(0,1,  RUNTIME_CLASS(TView), CSize(rect.Width() - rect.Width()/3,  rect.Height()-rect.Height()/4), pContext);
return true;

should I change somewhere else ?