[Overview][Types][Classes][Procedures and functions][Index] Reference for unit 'ComboEx' (#lcl)

TListItemsCompare

Specifies a function type used to compare items in TComboEx.

Declaration

Source position: comboex.pas line 49

type TListItemsCompare = function(

  AList: TListControlItems;

  AItem1: Integer;

  AItem2: Integer

):Integer;

Arguments

AList

  

Collection with the items compared in the routine.

AItem1

  

Ordinal position for the first item in the comparison.

AItem2

  

Ordinal position for the second item in the comparison.

Function result

Integer with the relative order for the compared values at the specified positions.

Description

TListItemsCompare is an Integer function type used to implement a comparison between the items stored at the specified positions in AList. The return value contains the relative sort order for the compared values, for example:

-1
Aitem1 occurs before AItem2
0
AItem1 and AItem2 have the same values
1
AItem1 occurs after AItem2

TListItemsCompare implements the sort operation performed in TListControlItems when its CustomSort method is called.

See also

TListControlItems.CustomSort

  

Performs a custom sort using the specified routine.

TListControlItems.Sort

  

Performs the Sort routine required for the setting in SortType.

TListControlItems.SortType

  

Determines the comparison mechanism used for collection items in the Sort method.

TListControlItems.OnCompare

  

Event handler signalled to sort the collection using the data in the collection items.

TListControlItems.CompareItems

  

Implements a comparison function for items in the collection.
Version 3.2 Generated 2024-02-25 Home