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<span style="font-weight: bold">procedure ScreenCapture(Bmp: TBitmap; Form: TForm);</span>
    var
      DeskWnd: HWnd;
      DeskDC: HDC;
      DeskCv: TCanvas;
      R: TRect;
      W, H: Integer;
    begin
      if Bmp = nil then Exit;
      DeskWnd:= Form.handle; //GetDesktopWindow;
      DeskDC := GetWindowDC(DeskWnd);
      DeskCv := TCanvas.Create;
      DeskCv.Handle := DeskDC;

      If (Form<>nil) then Begin
          W := Form.Width;
          H := Form.Height;
      end else Begin
          W := Screen.Width;
          H := Screen.Height;
      end;

      R := Bounds(0, 0, W, H);
      try
        Bmp.HandleType := bmDIB;
        Bmp.PixelFormat := pfDevice;
        Bmp.Width := W ;
        Bmp.Height:= H ;
        Bmp.Canvas.CopyMode := cmSrcCopy;
        Bmp.Canvas.CopyRect(R, DeskCv, R);
      finally
        DeskCv.Free;
        ReleaseDC(DeskWnd, DeskDC);
      end;
    end;

<span style="font-weight: bold">    Procedure PrintScreenshot(Form: TForm; BlattAusrichtung:TPrinterOrientation);</span>
    var Bmp: TBitmap;
        sizex,sizey : Integer;
    begin
     Bmp:= TBitmap.Create;
       ScreenCapture(bmp,Form);
       Printer.Orientation:=BlattAusrichtung;
       Printer.BeginDoc;
          Setuppage(sizex,sizey);
          Printer.Canvas.StretchDraw(Rect(0,0,sizex,sizey),bmp);
       Printer.EndDoc;
     Bmp.Free;
    end;
//************************************************************************




procedure TForm1.Edit1KeyUp(Sender: TObject; var Key: Word;
  Shift: TShiftState);
var
  Bitmap: TBitmap; sizex,sizey:Integer;
begin

    Bitmap := TBitmap.Create;
     If ((ssAlt in Shift) AND (Key= VK_SnapShot)) then begin       {Alt Druck}
          Bitmap.Assign(Clipboard);
          Bitmap.Width:=form1.Width;
          Bitmap.Height:=form1.height;
     end;

     If (Key=VK_SnapShot) then Begin                               {Druck}
          Bitmap.Assign(Clipboard);
          Bitmap.Width:=screen.Width;
          Bitmap.Height:=screen.height;
     end;
<span style="font-weight: bold">            Image1.Width:=Bitmap.Width;
            Image1.Height:=Bitmap.Height;
            Image1.Picture.Assign(Bitmap) ;                  {Bild ist zusehen}</span>

       Printer.Orientation:=poLandscape;
       Printer.BeginDoc;
       //  SetupPage(sizex,sizey);                         // hier ist das Problem
  <span style="font-weight: bold">                Printer.Canvas.Draw(500,500,TGraphic(Bitmap));</span>
//         Printer.Canvas.Draw(0,0,Bitmap);
       Printer.EndDoc;


     Bitmap.free;
end;<span style="font-weight: bold"></span>