How to get the value (string) of the current selection in a combobox

    CComPtr<IHTMLSelectionObject> pSelection;
    hr = pHTMLDocument->get_selection(&pSelection);
    if (FAILED(hr) || pSelection==NULL)
            return false;

    CComPtr<IDispatch> pDispRange;
    hr = pSelection->createRange(&pDispRange);
    if (FAILED(hr) || pDispRange==NULL)
            return false;
    CComPtr<IHTMLTxtRange> pRange;
    hr = pDispRange->QueryInterface(IID_IHTMLTxtRange,
            reinterpret_cast<void**>(&pRange));
    if (FAILED(hr)|| pRange ==NULL)
            return false;

To increase the height of the combobox we need to do like this in OnInitDialog() as follows,

CString str;
CSize   sz;
CDC*    pDC = m_comboCtrl.GetDC();

m_comboCtrl.GetLBText(0, str);
sz = pDC->GetTextExtent(str);

m_comboCtrl.SetItemHeight(-1,50);//CCombobox m_comboCtrl;

Here 50 in SetItemHeight Indicates the y-Coordinates which in our term is referred as height now .After adding the above code snippet in the OnInitDialog(), the combobox looks like (refer original post where I added the image of the combobox control after increasing the height(Image 2)).