WTL splitter

I want to separate window by vertical splitter and separate left half of result by horizontal splitter. What did i do wrong?

Code:

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m_wndVertSplit.Create ( *this, rcDefault, NULL, 0, WS_EX_CLIENTEDGE );
UpdateLayout();
m_wndHorSplit.Create ( m_wndVertSplit.GetSplitterPane(0), rcDefault, NULL, 0, WS_EX_CLIENTEDGE );
UpdateLayout();
m_wndVertSplit.SetSplitterPos ( 100 );
m_wndHorSplit.SetSplitterPos ( 100 );

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Could this article help you?

Thanks