How to add a CCombox programatically to an MFC Application

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C++

MFC

I need to add a ccombobox control programatically on the form. I'm using the following code:

CComboBox * m_searchComboBox = new CComboBox();

    if (! m_searchComboBox->Create( WS_VISIBLE | WS_CHILD | WS_BORDER | WS_VSCROLL | CBS_DROPDOWN,  CRect(200,25,300,15), this, IDC_COMBO_OD_COUNTRIES ))
        		TRACE0("Failed to create search bar\n");

It draws the combobox but not on the top of all other controls, I can not use it because the panel below covers the combobox. Moreover I want it to be on the left side of title bar but when I increase the value of the first parameter of CRect constructor to increase the left margin, the combobox disappears from the form like if it is completely covered by the left panel. In simple words I want the top-most flag to be passed to the Create method to solve this issue. Any help would be appreciated.