Problème impression couleur

j'ai modifier le programme mnt il marche avec la Base de Registre

unit Unit1;

interface

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

type
  TForm1 = class(TForm)
    ListBox1: TListBox;
    Label1: TLabel;
    BitBtn1: TBitBtn;
    BitBtn2: TBitBtn;
    procedure FormCreate(Sender: TObject);
    procedure BitBtn1Click(Sender: TObject);
    procedure BitBtn2Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

  procedure Liste_Imprimante(Destino : TStrings);
  procedure Selectionne_Imprimante(Imprimante : String);

implementation
uses Registry;
{$R *.dfm}

procedure TForm1.FormCreate(Sender: TObject);
begin
//
end;

procedure Liste_Imprimante(Destino : TStrings);
var
    RegCode             : TRegistry;
    Str                 : String;
    vtCount, i          : Integer;
begin
Destino.Clear;
RegCode := TRegistry.Create;
try
RegCode.RootKey := HKEY_CURRENT_USER;
if RegCode.OpenKey('Software\Microsoft\Windows NT\CurrentVersion\Devices',False)
then RegCode.GetValueNames(Destino);
finally
RegCode.CloseKey;
RegCode.Free;
end;
end;

procedure Selectionne_Imprimante(Imprimante : String);
var
    RegCode             : TRegistry;
    Str, Str1           : String;
    Arr_Tmp             : Array[0..64] of Char;
    vtCount, i          : Integer;
begin
RegCode := TRegistry.Create;
try
RegCode.RootKey := HKEY_CURRENT_USER;
if RegCode.OpenKey('Software\Microsoft\Windows NT\CurrentVersion\Devices',False)
then begin
     if RegCode.ValueExists(Imprimante)
     then begin
          Str1 := RegCode.ReadString(Imprimante);
          Str := Imprimante + ',' + Str1;
          RegCode.CloseKey;
          RegCode.RootKey := HKEY_CURRENT_USER;
          if RegCode.OpenKey('Software\Microsoft\Windows NT\CurrentVersion\Windows',False)
          then begin
               if RegCode.ValueExists('Device')
               then RegCode.WriteString('Device',Str);
               //Windows Refresh changes :
               StrCopy(Arr_Tmp, 'windows');
               SendMessage(HWND_BROADCAST, WM_WININICHANGE, 0, LongInt(@Arr_Tmp));
               end;
          end;
     end;
finally
RegCode.CloseKey;
RegCode.Free;
end;

end;

procedure TForm1.BitBtn1Click(Sender: TObject);
begin
Liste_Imprimante(ListBox1.Items);
end;

procedure TForm1.BitBtn2Click(Sender: TObject);
begin
if (ListBox1.ItemIndex <> -1)
then Selectionne_Imprimante(ListBox1.Items[ListBox1.ItemIndex]);
end;

end.