How to set a minimum column width

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Again we have to override the OnNotify() function. The
code below restricts the columns to a minimum width of 80 pixels. The logic
can be extended to restrict the width within a range or even specify different
range for different columns. To extend the functionality, you would need
to add member variables to the class to track the different settings.

BOOL CMyListCtrl::OnNotify(WPARAM wParam, LPARAM lParam, LRESULT* pResult) 
{
    HD_NOTIFY   *pHDN = (HD_NOTIFY*)lParam;

        if((pHDN->hdr.code == HDN_ITEMCHANGINGW || pHDN->hdr.code == HDN_ITEMCHANGINGA) 
                && pHDN->pitem->cxy < 80)
        {
                *pResult = TRUE;                // disable change
                return TRUE;                    // Processed message
        }
 
        return CListCtrl::OnNotify(wParam, lParam, pResult);
}