unit13.pas

图书管理系统

unit Unit13;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, TeEngine, Series, ExtCtrls, TeeProcs, Chart, DbChart, StdCtrls,
  Buttons, DB, ADODB;

type
  TfrmBorrowAnalysis = class(TForm)
    ADOQuery1: TADOQuery;
    DataSource1: TDataSource;
    BitBtn1: TBitBtn;
    DBChart1: TDBChart;
    Series1: TBarSeries;
    BitBtn2: TBitBtn;
    Button1: TButton;
    Button2: TButton;
    procedure BitBtn1Click(Sender: TObject);
    procedure BitBtn2Click(Sender: TObject);
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  frmBorrowAnalysis: TfrmBorrowAnalysis;

implementation

{$R *.dfm}

procedure TfrmBorrowAnalysis.BitBtn1Click(Sender: TObject);
begin
  DBChart1.NextPage;   //下一页
end;

procedure TfrmBorrowAnalysis.BitBtn2Click(Sender: TObject);
begin
  DBChart1.PreviousPage;  //上一页
end;

procedure TfrmBorrowAnalysis.Button1Click(Sender: TObject);
begin
  showmessage('请确认连接打印机');
end;

procedure TfrmBorrowAnalysis.Button2Click(Sender: TObject);
begin
  close;
end;

end.