ypxsunit.pas

《delphi 7.0_8.0课程设计与系统开发案例》随书代码

unit YPXSUnit;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, Grids, DBGrids, StdCtrls, DB, DBTables, Buttons, Mask, DBCtrls;

type
  TForm5 = class(TForm)
    Label1: TLabel;
    Label2: TLabel;
    Table1: TTable;
    DataSource1: TDataSource;
    GroupBox1: TGroupBox;
    DBGrid1: TDBGrid;
    GroupBox2: TGroupBox;
    Table1BDEDesigner: TStringField;
    Table1BDEDesigner2: TStringField;
    Table1BDEDesigner3: TStringField;
    Table1BDEDesigner4: TFloatField;
    Table1BDEDesigner5: TCurrencyField;
    Table1BDEDesigner6: TCurrencyField;
    Label3: TLabel;
    Label4: TLabel;
    Label5: TLabel;
    Label6: TLabel;
    Label7: TLabel;
    Label8: TLabel;
    DBEdit1: TDBEdit;
    DBEdit2: TDBEdit;
    DBEdit3: TDBEdit;
    DBEdit4: TDBEdit;
    DBEdit5: TDBEdit;
    DBEdit6: TDBEdit;
    SpeedButton1: TSpeedButton;
    SpeedButton2: TSpeedButton;
    SpeedButton3: TSpeedButton;
    procedure SpeedButton1Click(Sender: TObject);
    procedure SpeedButton2Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form5: TForm5;

implementation

{$R *.dfm}

procedure TForm5.SpeedButton1Click(Sender: TObject);
begin
Table1.Append;
end;

procedure TForm5.SpeedButton2Click(Sender: TObject);
VAR
R1:real;
R2:real;
Code1:Integer;
Code2:Integer;
s1:string;
s2:string;
s3:string;
begin
Table1.Edit;
s1:=DBEdit4.text;
S2:=DBEdit5.text;
Val(S1,R1,CODE1);
Val(s2,R2,CODE2);
STR(r1*r2,S3);
DBEdit6.text:=S3;
Table1.Post;
end;

end.