//funkcja zaznaczająca na liście kontakt o podanym ID
void SelectCNT(HWND ListView, int CNT)
{
    const int ListCount = ListView_GetItemCount(ListView);
    for(int i = 0; i < ListCount; i++)
    {
        LVITEM lvi;
        lvi.iItem = i;
        lvi.iSubItem = 0;
        lvi.mask = LVIF_PARAM;
        ListView_GetItem(ListView, &lvi);
        if(((sUICnt*)(lvi.lParam))->ID == CNT)
        {
            ListView_SetItemState(ListView, i, LVIS_SELECTED|LVIS_FOCUSED, LVIS_SELECTED|LVIS_FOCUSED);
            return;
        }
    }
}