procedure TForm1.Button1Click( Sender: TObject );
begin
  // paste selection contents to the clipboard
  ImageEnView1.Proc.SelCopyToClip;
  // if clipboard contains data valid for TImageEnProc
  if ImageEnView2.Proc.IsClipboardAvailable then
  begin
    // paste the contents of the Clipboard to the ImageEnView2 selected area
    ImageEnView2.Proc.SelPasteFromClip( );
    // or paste the clipboard to the ImageEnView2 selected area, stretching the image to fit the selection
    // ImageEnView2.Proc.SelPasteFromClipStretch;
    ImageEnView2.Update;
  end;
end;