Инкрементальный поиск в ListBox

Code:

unit LbxSrch;

interface

uses

Windows, Messages, SysUtils, Classes, Controls, Forms, StdCtrls;

type

TFrmLbxSrch = class(TForm)

   Edit1: TEdit;

   Edit2: TEdit;

   ListBox1: TListBox;

   Label1: TLabel;

   procedure FormKeyPress(Sender: TObject; var Key: Char);

   procedure ListBox1Enter(Sender: TObject);

private { Private declarations }

   FPrefix: array[0..255] of char;

public

   { Public declarations }

end;

var

FrmLbxSrch: TFrmLbxSrch;

implementation

{$R *.DFM}

procedure TFrmLbxSrch.FormKeyPress(Sender: TObject; var Key: Char);

{ Помните о том, что свойство KeyPreview должно быть установлено в True }

var

curKey: array[0..1] of char;

ndx: integer;

begin

if ActiveControl = ListBox1 then

begin

   if key = #8 {Backspace (клавиша возврата)} then

   begin

     if FPrefix[0] <> #0 then

     begin

       FPrefix[StrLen(FPrefix) - 1] := #0;

     end

   end

   else

   begin

     curKey[0] := Key;

     curKey[1] := #0;

     StrCat(FPrefix, curKey);

     ndx := SendMessage(ListBox1.Handle, LB_FINDSTRING,

       -1, longint(@FPrefix));

     if ndx <> LB_ERR then

       ListBox1.ItemIndex := ndx;

   end;

   Label1.Caption := StrPas(FPrefix);

   Key := #0;

end;

end;

procedure TFrmLbxSrch.ListBox1Enter(Sender: TObject);

begin

FPrefix[0] := #0;

Label1.Caption := StrPas(FPrefix);

end;

end.

Code:

procedure TForm1.Edit1Change(Sender: TObject);

var

Ndx: Word;

begin

with Sender as TEdit do

begin

   Ndx := ListBox1.Items.Add(Text);

   ListBox1.Items.Delete(Ndx);

   if CompareText(Text, Copy(ListBox1.Items[Ndx], 1, Length(Text))) = 0 then

     ListBox1.ItemIndex := Ndx

   else

     ListBox1.ItemIndex := -1;

end;

end;