Fix: Copy register handling for cagire-desktop (Linux)

CHANGELOG.md

@@ -20,6 +20,7 @@ All notable changes to this project will be documented in this file.
 ### Fixed
 - Scope/spectrum ratio asymmetry in Left/Right layout modes.
 - Updated `cpal` dependency from 0.15 to 0.17 to fix type mismatch with `doux` audio backend.
+- Copy/paste (Ctrl+C/V/X) not working in desktop version due to egui intercepting clipboard shortcuts.
 
 ## [0.0.3] - 2026-02-02
 

src/input_egui.rs

@@ -40,6 +40,12 @@ fn convert_event(event: &egui::Event) -> Option<KeyEvent> {
             }
             None
         }
+        // egui intercepts Ctrl+C/V/X and converts them to these high-level events
+        // instead of passing through raw Key events (see egui issue #4065).
+        // Synthesize the equivalent KeyEvent so the application's input handler receives them.
+        egui::Event::Copy => Some(KeyEvent::new(KeyCode::Char('c'), KeyModifiers::CONTROL)),
+        egui::Event::Cut => Some(KeyEvent::new(KeyCode::Char('x'), KeyModifiers::CONTROL)),
+        egui::Event::Paste(_) => Some(KeyEvent::new(KeyCode::Char('v'), KeyModifiers::CONTROL)),
         _ => None,
     }
 }