unit1.pas

Base64 Encode/Decode的dll包装

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls, Base64;

type
  TForm1 = class(TForm)
    Edit1: TEdit;
    Edit2: TEdit;
    Edit3: TEdit;
    Button1: TButton;
    Button2: TButton;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
var
  len: Integer;
  retbuf: PChar;
begin
  len:= Length(Edit1.Text);
  GetMem(retbuf, len*2+4);
  Base64Encode(retbuf, PChar(Edit1.Text));
  Edit2.Text := retbuf;
  FreeMem(retbuf);
end;

procedure TForm1.Button2Click(Sender: TObject);
var
  len: Integer;
  retbuf: PChar;
begin
  len:= Length(Edit2.Text);
  GetMem(retbuf, len+1);
  Base64Decode(retbuf, PChar(Edit2.Text));
  Edit3.Text := retbuf;
  FreeMem(retbuf);
end;

end.