uinfo_list.pas

电信计费帐务系统话费查询营业厅触摸屏界面

unit Uinfo_list;

interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
  Db, DBTables, Grids, DBGrids, StdCtrls, Buttons;

type
  Tinfo_list = class(TForm)
    DataSource1: TDataSource;
    Query1: TQuery;
    Label2: TLabel;
    SpeedButton2: TSpeedButton;
    DBGrid1: TDBGrid;
    SpeedButton1: TSpeedButton;
    SpeedButton3: TSpeedButton;
    procedure SpeedButton2Click(Sender: TObject);
    procedure FormShow(Sender: TObject);
    procedure FormClose(Sender: TObject; var Action: TCloseAction);
    procedure SpeedButton1Click(Sender: TObject);
    procedure SpeedButton3Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  info_list: Tinfo_list;

implementation

uses Uquery_main;

{$R *.DFM}

procedure Tinfo_list.SpeedButton2Click(Sender: TObject);
begin
close
end;

procedure Tinfo_list.FormShow(Sender: TObject);
begin
  query1.ParamByName('phone_nbr').asstring :=query_main.phone_nbr;
  query1.ParamByName('billing_period').asstring :=query_main.billing_period;
  query1.open;
end;

procedure Tinfo_list.FormClose(Sender: TObject; var Action: TCloseAction);
begin
  query1.close;
end;

procedure Tinfo_list.SpeedButton1Click(Sender: TObject);
var
i:integer;
begin
  for i:=1 to 20 do if  not query1.Bof then query1.Prior;
end;

procedure Tinfo_list.SpeedButton3Click(Sender: TObject);
var
i:integer;
begin
  for i:=1 to 20 do if  not query1.Eof then query1.Next;
end;


end.