While creating list view just add this LVS_SHOWSELALWAYS to Windows Style


hWndListView = CreateWindow(WC_LISTVIEW, 
                                "", 
                                WS_CHILD | LVS_REPORT | LVS_EDITLABELS | LVS_SHOWSELALWAYS, 
                                rectClient.left, 
                                rectClient.top, 
                                rectClient.right - rectClient.left, 
                                rectClient.bottom - rectClient.top, 
                                hWnd, 
                                (HMENU)ID_LIST, 
                                hInst, 
                                NULL);