dll + String +PChar

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OlegG (2002-04-16 09:53) [2]

> MBo ©
sharemem не помогает...
Ругается у меня на FreeLibrary(LibHandle);
А сами ф-ции Encrypt и Decrypt отрабатывают правильно...
Если нужен код самой dll, то могу написать...

unit Unit1;

interface

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

type
TForm1 = class(TForm)
Memo1: TMemo;
Memo2: TMemo;
Button1: TButton;
procedure FormCreate(Sender: TObject);
procedure Button1Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;

const
StartKey = 981;
MultKey = 12674;
AddKey = 35891;

var
Form1: TForm1;
Encrypt : function (const InString: string; StartKey, MultKey, AddKey: Integer):string;
Decrypt : function (const InString: string; StartKey, MultKey, AddKey: Integer):string;
LibHandle : THandle;

implementation

{$R *.dfm}

procedure TForm1.FormCreate(Sender: TObject);
begin
Memo1.Clear;
Memo2.Clear;
end;

procedure TForm1.Button1Click(Sender: TObject);
var
tmp : string;
begin
@Encrypt:= nil;
@Decrypt:= nil;
LibHandle:= LoadLibrary("crypt.dll");
if LibHandle >= 32 then
begin
@Encrypt:= GetProcAddress(LibHandle,"Encrypt");
@Decrypt:= GetProcAddress(LibHandle,"Decrypt");
if @Encrypt <> nil then
tmp:= Encrypt(Memo1.Text, StartKey, MultKey, AddKey);

if @Decrypt <> nil then
Memo2.Text:= Decrypt(tmp, StartKey, MultKey, AddKey);
end;
FreeLibrary(LibHandle);
end;

end.

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