1 files changed, 24 insertions, 0 deletions
diff --git a/alacritty/src/panic.rs b/alacritty/src/panic.rs
new file mode 100644
index 00000000..9a76df72
--- /dev/null
+++ b/alacritty/src/panic.rs
@@ -0,0 +1,24 @@
+use alacritty_terminal::tty::windows::win32_string;
+
+// Install a panic handler that renders the panic in a classical Windows error
+// dialog box as well as writes the panic to STDERR.
+pub fn attach_handler() {
+    use std::{io, io::Write, panic, ptr};
+    use winapi::um::winuser;
+
+    panic::set_hook(Box::new(|panic_info| {
+        let _ = writeln!(io::stderr(), "{}", panic_info);
+        let msg = format!("{}\n\nPress Ctrl-C to Copy", panic_info);
+        unsafe {
+            winuser::MessageBoxW(
+                ptr::null_mut(),
+                win32_string(&msg).as_ptr(),
+                win32_string("Alacritty: Runtime Error").as_ptr(),
+                winuser::MB_ICONERROR
+                    | winuser::MB_OK
+                    | winuser::MB_SETFOREGROUND
+                    | winuser::MB_TASKMODAL,
+            );
+        }
+    }));
+}