Fehler mit CustomSort

[okoeller]

Hallo Delphianer,


warum fliegt mein Programm in procedure TForm1.ListView1ColumnClick . . .
in Zeile ListView1.CustomSort(@CustomSortProc, 0);

mit der Meldung " Variable erforderlich " raus?

Danke für hilfreiche Antworten.

okoeller

Delphi-Quellcode:

unit LVT;

interface

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

type
  TForm1 = class(TForm)
    ListView1: TListView;
    procedure FormCreate(Sender: TObject);
    procedure ListView1ColumnClick(Sender: TObject; Column: TListColumn);
  private
    procedure DatensaetzeHinzufuegen ;
    function CustomSortProc(Item1, Item2: TListItem; ParamSort: integer): integer; stdcall;
  public
  end;


var
  Form1: TForm1;


implementation

{$R *.dfm}


function TForm1.CustomSortProc(Item1, Item2: TListItem;
  ParamSort: integer): integer;
begin
   Result := -CompareText(Item1.Caption, item2.Caption);
end;


{*
  Testdaten
*}
procedure TForm1.DatensaetzeHinzufuegen;
var
  Litem : TListItem;
begin
  ListView1.Items.BeginUpdate;
  ListView1.Items.Clear;
  .
  .
  .
  ListView1.Items.EndUpdate;
end;


procedure TForm1.FormCreate(Sender: TObject);
begin
  DatensaetzeHinzufuegen;
end;


procedure TForm1.ListView1ColumnClick(Sender: TObject; Column: TListColumn);
begin
  ListView1.CustomSort(@CustomSortProc, 0);
end;


end.