findfrm.pas

基于Interbase的图书管理系统

unit findfrm;

interface

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

type
  TfindForm = class(TForm)
    BitBtn1: TBitBtn;
    GroupBox1: TGroupBox;
    BitBtn2: TBitBtn;
    Label1: TLabel;
    Edfind: TEdit;
    procedure EdfindKeyPress(Sender: TObject; var Key: Char);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  findForm: TfindForm;

implementation

{$R *.dfm}

procedure TfindForm.EdfindKeyPress(Sender: TObject; var Key: Char);
begin
 if key=#13 then EXIT;
if not(key in ['a'..'z','A'..'Z','0'..'9','-',#8]) then
   begin
    key:=#0;
    beep;
   end;
  if (key in ['a'..'z']) then key:=chr(ord(key)-32);
end;

end.