screen

unit Unit1;

interface

uses
  Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
  Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.Clipbrd, Vcl.Imaging.jpeg, Vcl.ExtCtrls;

type
  TForm1 = class(TForm)
    Image1: TImage;
    procedure FormActivate(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.FormActivate(Sender: TObject);
var jpg:tjpegimage;
begin
if Clipboard.HasFormat(CF_BITMAP) then begin Image1.Picture.Bitmap.Assign(Clipboard);
jpg:=tjpegimage.create;
jpg.assign(image1.picture.graphic);
jpg.compressionquality:=65;
jpg.compress;
jpg.savetofile('d:\1.jpg');
jpg.free;
Close;
end else begin ShowMessage('В буфере нет графики!');
Close;
end;
end;
end.