为何调用DLL不成功呢?

Question

我做了一个简单的加法运算,怎么不成功呢?
DLL代码:
library Project2;
uses
  SysUtils,
  Classes;
{$R *.res}
function jiaf(x,y:Integer):Integer;stdcall;
begin
  result:=x+y;
end;
exports
jiaf;
begin
end.
窗体文件代码:
type
  TForm1 = class(TForm)
    Edit1: TEdit;
    Button1: TButton;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;var
  Form1: TForm1;implementation
{$R *.dfm}
 function jiaf(x,y:integer):integer;stdcall;external'project.dll';
procedure TForm1.Button1Click(Sender: TObject);
begin
Edit1.text:=IntToStr(jiaf);
end;
end.
请大家帮帮小弟,拜托大家了!

Answer 1

function jiaf(x,y:integer):integer;stdcall;external'project2.dll';//project2这个名字与你编译后的dll文件要同名
procedure TForm1.Button1Click(Sender: TObject);
begin
  Edit1.text:=IntToStr(jiaf(1,3));//传入对应的参数
end;