rem: WMSortListItemsWithComparer(WMList *lPtr, int (f)(const void*, const void*))
add: WMSortListItemsWithComparer(WMList *lPtr, WMCompareDataProc *func)
context: WMSortListItemsWithComparer(WMList *lPtr, int (f)(const void*, const void*)){    WMSortArray(lPtr->items, f);    paintList(lPtr);}