dll

Basta vc assinar a Function ou Procedure que foi declarada na dll.

Exemplo:

library Teste;[size=18:cc2a14720f]{Salve a dll com o nome de Teste}[/size:cc2a14720f]

{ Important note about DLL memory management: ShareMem must be the
first unit in your library´s USES clause AND your project´s (select
Project-View Source) USES clause if your DLL exports any procedures or
functions that pass strings as parameters or function results. This
applies to all strings passed to and from your DLL--even those that
are nested in records and classes. ShareMem is the interface unit to
the BORLNDMM.DLL shared memory manager, which must be deployed along
with your DLL. To avoid using BORLNDMM.DLL, pass string information
using PChar or ShortString parameters. }

uses
SysUtils,
Classes,
dialogs;

{$R *.res}

Procedure Exibir;Export;
Begin
ShowMessage(´Testando huahuahauahauahua´);
End;

Exports
Exibir;

begin
end.



[color=red:cc2a14720f]Agora vamos fazer um programa que acessa a Procedure Exibir desta dll.[/color:cc2a14720f]


unit Unit1;

interface

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

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

var
Form1: TForm1;

implementation

Procedure Exibir; External ´Minhadll.dll´;
{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
begin
Exibir; // Chama a procedure que está na dll.
end;

end.