unit17.~pas

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unit Unit17;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls;

type
  TZhaoQian = class(TForm)
    Label1: TLabel;
    Edit1: TEdit;
    Label2: TLabel;
    Edit2: TEdit;
    Label3: TLabel;
    Edit3: TEdit;
    Button1: TButton;
    procedure Button1Click(Sender: TObject);
    procedure FormShow(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  ZhaoQian: TZhaoQian;

implementation

uses Unit18, Unit16;

{$R *.dfm}

procedure TZhaoQian.Button1Click(Sender: TObject);
begin
FORM18.SHOW;
end;

procedure TZhaoQian.FormShow(Sender: TObject);
var
yingfu,yishou,zhaoqian:integer;
zhao:string;
begin
edit1.Text:=fuqian.Edit1.Text;
edit2.Text:=fuqian.Edit2.Text;
yingfu:=strtoint(edit1.Text);
yishou:=strtoint(edit2.Text);
zhaoqian:=yishou-yingfu;
if zhaoqian<0 then
 sHOWMESSAGE('不好意思,先生/女士您的钱不够!')
 else
 begin
zhao:=inttostr(zhaoqian);
edit3.text:=zhao;
button1.Focused;
button1.Focused;
end;
end;

end.