ex1.~pas

本光盘是《Delphi 7应用教程》一书的配套光盘

unit ex1;

interface

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

type
  TForm1 = class(TForm)
    Button1: TButton;
    Label1: TLabel;
    Label2: TLabel;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}
 Function ListMoveF(var l1,l2 :Integer):WordBool;Far; External  'EXAMDLL.DLL'

procedure TForm1.Button1Click(Sender: TObject);
Var
  l1,l2:Integer;
begin
      if ListMoveF(l1,l2) then
        begin
          Label1.Caption  :='第一个列表框中有：'+inttostr(l1)+'个选项';
          Label2.Caption :='第二个列表框中有：'+inttostr(l2)+'个选项';
        end;

end;

end.