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-- PURPOSE:
-- The comparison function is called during the sort operation
-- each time the relative order of two list items needs to be compared.
-- ARGUMENTS:
-- `lParam1' the 32-bit value associated with the first item being
-- compared;
-- `lParam2' the value associated with the second item (these are
-- the values that were specified in the `lParam' member
-- of the items' `LV_ITEM' structure when they were
-- inserted into the list);
-- `lParamSort'is the same value passed to the `LVM_SORTITEMS' message.
-- RESULT:
-- The comparison function must return a negative value
-- if the first item should precede the second,
-- a positive value if the first item should follow the second,
-- or zero if the two items are equivalent.
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