cardno.pas

一个Delphi写的跟考勤机门禁机收款机的接品软件源码

unit CardNo;

interface

uses
  Windows, Forms, SysUtils, StdCtrls, Mask, Controls, Classes;

type
  TdlgCardNo = class(TForm)
    btnOK: TButton;
    btnCancel: TButton;
    edCardNo: TMaskEdit;
    Label1: TLabel;
    procedure FormShow(Sender: TObject);
    procedure FormClose(Sender: TObject; var Action: TCloseAction);
    procedure FormDestroy(Sender: TObject);
    procedure edCardNoKeyPress(Sender: TObject; var Key: Char);
  private
    { Private declarations }
  public
    { Public declarations }
    CardNo: string;
    function Execute: Boolean;
  end;

var
  dlgCardNo: TdlgCardNo;

implementation

{$R *.DFM}

function TdlgCardNo.Execute: Boolean;
begin
  if not Assigned(dlgCardNo) then
    dlgCardNo := TdlgCardNo.Create(Application);
  if dlgCardNo.ShowModal = mrOK then
    Result := True
  else
    Result := False;
end;

procedure TdlgCardNo.FormShow(Sender: TObject);
begin
  edCardNo.SetFocus;
  edCardNo.SelectAll;
end;

procedure TdlgCardNo.FormClose(Sender: TObject; var Action: TCloseAction);
begin
  CardNo := Trim(edCardNo.Text);
end;

procedure TdlgCardNo.FormDestroy(Sender: TObject);
begin
  dlgCardNo:=nil;
end;

procedure TdlgCardNo.edCardNoKeyPress(Sender: TObject; var Key: Char);
begin
  if not (Key in [#8, '0'..'9', 'A'..'F', 'a'..'f']) then Key:=#0;
end;

end.