submit btn

src/main.dart

@@ -40,9 +40,8 @@ class GamePage extends StatelessWidget {
 class GuessInput extends StatelessWidget {
     GuessInput({super.key, required this.onSubmitGuess});
 
-    final void Function(String) onSubmitGuess;
-
     final FocusNode _focusNode = FocusNode();
+    final void Function(String) onSubmitGuess;
     final TextEditingController _textEditingController = TextEditingController();
 
     @override
@@ -62,17 +61,28 @@ class GuessInput extends StatelessWidget {
                             focusNode: _focusNode,
                             maxLength: 5,
                             onSubmitted: (_) {
-                                onSubmitGuess(_textEditingController.text.trim());
-                                _textEditingController.clear();
-                                _focusNode.requestFocus();
+                                processSubmit();
                             },
                         ),
                         padding: const EdgeInsets.all(8.0),
                     ),
-                )
+                ),
+                IconButton(
+                    icon: const Icon(Icons.arrow_circle_up),
+                    onPressed: () {
+                        processSubmit();
+                    },
+                    padding: EdgeInsets.zero,
+                ),
             ]
         );
     }
+
+    void processSubmit() {
+        onSubmitGuess(_textEditingController.text.trim());
+        _textEditingController.clear();
+        _focusNode.requestFocus();
+    }
 }
 
 class MainApp extends StatelessWidget {