unit1.pas

delphi 编写的在DLL中建立回调函数机制。

unit Unit1;

interface

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

function PlugRun(SetInfo:string):PChar;stdcall;

type
  TForm1 = class(TForm)
    Memo1: TMemo;
    Button1: TButton;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

function PlugRun; external 'card.dll';
{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
begin

  showmessage(PlugRun('')  );

end;

end.