big flat; add midi/audio port handling

src/exit.rs

@@ -1,5 +1,5 @@
+use crate::*;
 use std::sync::{Arc, atomic::AtomicBool};
-use crate::Usually;
 
 #[derive(Clone)] pub struct Exit(Arc<AtomicBool>);
 
@@ -7,6 +7,14 @@ impl Exit {
     pub fn run <T> (run: impl FnOnce(Self)->Usually<T>) -> Usually<T> {
         run(Self(Arc::new(AtomicBool::new(false))))
     }
+    pub fn is (event: &Event) -> bool {
+        matches!(event, Event::Key(KeyEvent {
+            modifiers: KeyModifiers::CONTROL,
+            code:      KeyCode::Char('c'),
+            kind:      KeyEventKind::Press,
+            state:     KeyEventState::NONE
+        }))
+    }
 }
 
 impl AsRef<Arc<AtomicBool>> for Exit {