showDialog method
Implementation
Future<Process> showDialog(
final String title,
final String body,
final String height,
final String width,
) =>
Process.start(
'bash',
[
'-c',
// ignore: no_adjacent_strings_in_list
"whiptail --title '$title' --msgbox "
"'$body' '$height' '$width'"
],
mode: ProcessStartMode.inheritStdio,
);