usercheckfrm.pas

一个用Delphi做的在线考试系统,可以实现网络下的在线考试

unit UserCheckFrm;

interface

uses Windows, SysUtils, Classes, Graphics, Forms, Controls, StdCtrls, 
  Buttons, ExtCtrls, ComCtrls, ToolWin, Dialogs, jpeg;

type
  TUserCheckForm = class(TForm)
    GroupBox1: TGroupBox;
    GroupBox2: TGroupBox;
    Label1: TLabel;
    Label2: TLabel;
    edtPassword: TEdit;
    Okbtn: TButton;
    CancelBtn: TButton;
    Edit1: TEdit;
    procedure OKBtnClick(Sender: TObject);
    procedure FormKeyDown(Sender: TObject; var Key: Word;
      Shift: TShiftState);
    procedure CancelBtnClick(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
   function UserCheckDlg(var AUser,APassword: string): boolean;
  end;

var
  UserCheckForm: TUserCheckForm;
  TrueCancel:Boolean;



implementation

uses  TaxPublic;
{$R *.DFM}

function TUserCheckForm.UserCheckDlg(var AUser,APassword: string): boolean;
var
  Form: TUserCheckForm;
  s: string;
begin
  Form:= TUserCheckForm.Create(Application);
  with Form do
  begin
    if ShowModal = mrOk then
    begin
      Result := True;
      AUser := Trim(edit1.Text);
      APassword := edtPassword.Text;
    end
    else
      Result := False;
    Free;
  end;
end;

procedure TUserCheckForm.OKBtnClick(Sender: TObject);
begin
  if (Trim(Edit1.Text) = '') or (Trim(edtpassword.Text) = '') then Exit;
  ModalResult := mrOk;
  TrueCancel:= False;
end;

procedure TUserCheckForm.FormKeyDown(Sender: TObject; var Key: Word;
  Shift: TShiftState);
begin
  if Key = VK_RETURN then
  SelectNext(ActiveControl,True,True);
end;

procedure TUserCheckForm.CancelBtnClick(Sender: TObject);
begin
  inherited;
  ModalResult := MrCancel;
  TrueCancel:= True;
end;



end.