ccombobox

The problem I'm having with the following code is that I can't enter any text into the edit control. CComboView.Create(...) is called from my app.


WNDPROC lpfnEditWndProc; // original wndproc for the combo box 
// Prototypes
LRESULT CALLBACK SubClassProc( HWND, UINT, WPARAM, LPARAM );


template< class T, class TBase = CWindow, class TWinTraits = CControlWinTraits >
class ATL_NO_VTABLE CComboImpl : 
   public CWindowImpl< T, TBase, TWinTraits >

{
public:
	CComboBox ctl;


	BEGIN_MSG_MAP(CComboView)	
	
		MESSAGE_HANDLER(WM_CREATE, OnCreate)
END_MSG_MAP()

   LRESULT OnCreate(UINT /*uMsg*/, WPARAM /*wParam*/, LPARAM /*lParam*/, BOOL&
/*bHandled*/)
	{

		//ModifyStyle(WS_CLIPCHILDREN, SS_NOTIFY);
		
		RECT rfc;
	rfc.bottom=200;
	rfc.left=rfc.top=0;
	rfc.right=800;
		ctl.Create(m_hWnd, rfc, NULL, WS_CHILD | WS_VISIBLE|CBS_DROPDOWN);
	
	lpfnEditWndProc = (WNDPROC) ::SetWindowLong(hEdit, 
                GWL_WNDPROC, (DWORD) SubClassProc); 

	return 0;
	}

};


class CComboView : public CComboImpl<CComboView>
{
public:
	//DECLARE_WND_SUPERCLASS(NULL, CComboBox::GetWndClassName())
	//DECLARE_WND_CLASS(NULL)
	BEGIN_MSG_MAP(CComboView)
			CHAIN_MSG_MAP(CComboImpl<CComboView>);
	END_MSG_MAP()
};
LRESULT CALLBACK SubClassProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam) 
{ 		
    switch (msg) 
    {         
		case WM_CHAR: 
			//{
				
            switch (wParam) 
            { 

                case VK_RETURN: 

					/*TODO: work out what to do with combobox text*/
                    return 0; 
            }
			//}
    } 
 
    // Call the original window procedure for default processing. 
 
    return CallWindowProc(lpfnEditWndProc, hwnd, 
        msg, wParam, lParam); 
}



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