1  use ratatui::{
 2      crossterm::event::{self, Event, KeyCode},
 3      widgets::{Block, Paragraph},
 4  };
 5  
 6  fn main() -> anyhow::Result<()> {
 7      ratatui::run(|terminal| {
 8          let mut exit = false;
 9          while !exit {
10              terminal.draw(|frame| {
11                  let block = Block::bordered().title("Diff of Services");
12                  let greeting = Paragraph::new("Hello, world!\nPress 'q' to exit.")
13                      .centered()
14                      .block(block);
15                  frame.render_widget(greeting, frame.area());
16              })?;
17  
18              match event::read()? {
19                  Event::Key(key) => match key.code {
20                      KeyCode::Char('q') => exit = true,
21                      _ => {}
22                  },
23                  _ => {}
24              }
25          }
26  
27          Ok(())
28      })
29  }