Создать TListView, который автоматически пересортирует при щелчке на заголовке колонки

Оформил: DeeCo

unit SortedListView;

 interface

 uses
   Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
   ComCtrls;

 type
   TSortedListView = class(TListView)
   private
     FSortColumn: Integer;
     procedure SetSortColumn(const Value: Integer);
     procedure SortedListViewCompare(Sender: TObject; Item1, Item2: TListItem;
       Data: Integer; var Compare: Integer);
     procedure SortedListViewColumnClick(Sender: TObject; Column: TListColumn);
     { Private declarations }
   protected
     { Protected declarations }
   public
     constructor Create(AOwner: TComponent); override;
     { Public declarations }
   published
     { Published declarations }
     property SortColumn: Integer read FSortColumn write SetSortColumn;
   end;

 implementation

 {==============================================================================}
 { TSortedListView }
 {==============================================================================}
 constructor TSortedListView.Create(AOwner: TComponent);
 begin
   inherited;

   OnColumnClick := SortedListViewColumnClick;
   OnCompare := SortedListViewCompare;
 end;
 {==============================================================================}

 procedure TSortedListView.SetSortColumn(const Value: Integer);
 begin
   FSortColumn := Value;
   AlphaSort;
 end;
 {==============================================================================}

 procedure TSortedListView.SortedListViewColumnClick(Sender: TObject;
   Column: TListColumn);
 begin
   SortColumn := Column.Index;
 end;
 {==============================================================================}

 procedure TSortedListView.SortedListViewCompare(Sender: TObject;
   Item1, Item2: TListItem; Data: Integer; var Compare: Integer);
 begin
   if SortColumn = 0 then
     Compare := CompareText(Item1.Caption, Item2.Caption)
   else
     Compare := CompareText(Item1.SubItems[SortColumn - 1], Item2.SubItems[SortColumn - 1]);
 end;

 end.