diff --git a/lib/bean/appbar/sys_app_bar.dart b/lib/bean/appbar/sys_app_bar.dart
index fbf56eba..c0688718 100644
--- a/lib/bean/appbar/sys_app_bar.dart
+++ b/lib/bean/appbar/sys_app_bar.dart
@@ -41,73 +41,6 @@ class SysAppBar extends StatelessWidget implements PreferredSizeWidget {
       this.bottom,
       this.needTopOffset = true});
 
-  void _handleCloseEvent() {
-    final setting = GStorage.setting;
-    final exitBehavior =
-        setting.get(SettingBoxKey.exitBehavior, defaultValue: 2);
-
-    switch (exitBehavior) {
-      case 0:
-        exit(0);
-      case 1:
-        KazumiDialog.dismiss();
-        windowManager.hide();
-        break;
-      default:
-        KazumiDialog.show(builder: (context) {
-          bool saveExitBehavior = false; // 下次不再询问？
-
-          return AlertDialog(
-            title: const Text('退出确认'),
-            content: Column(
-              mainAxisSize: MainAxisSize.min,
-              crossAxisAlignment: CrossAxisAlignment.stretch,
-              children: [
-                const Text('您想要退出 Kazumi 吗？'),
-                const SizedBox(height: 24),
-                StatefulBuilder(builder: (context, setState) {
-                  onChanged(value) {
-                    saveExitBehavior = value ?? false;
-                    setState(() {});
-                  }
-
-                  return Wrap(
-                    crossAxisAlignment: WrapCrossAlignment.center,
-                    spacing: 8,
-                    children: [
-                      Checkbox(value: saveExitBehavior, onChanged: onChanged),
-                      const Text('下次不再询问'),
-                    ],
-                  );
-                }),
-              ],
-            ),
-            actions: [
-              TextButton(
-                  onPressed: () async {
-                    if (saveExitBehavior) {
-                      await setting.put(SettingBoxKey.exitBehavior, 0);
-                    }
-                    exit(0);
-                  },
-                  child: const Text('退出 Kazumi')),
-              TextButton(
-                  onPressed: () async {
-                    if (saveExitBehavior) {
-                      await setting.put(SettingBoxKey.exitBehavior, 1);
-                    }
-                    KazumiDialog.dismiss();
-                    windowManager.hide();
-                  },
-                  child: const Text('最小化至托盘')),
-              const TextButton(
-                  onPressed: KazumiDialog.dismiss, child: Text('取消')),
-            ],
-          );
-        });
-    }
-  }
-
   bool showWindowButton() {
     return GStorage.setting
         .get(SettingBoxKey.showWindowButton, defaultValue: false);
@@ -122,7 +55,7 @@ class SysAppBar extends StatelessWidget implements PreferredSizeWidget {
     if (Utils.isDesktop()) {
       // acs.add(IconButton(onPressed: () => windowManager.minimize(), icon: const Icon(Icons.minimize)));
       if (!showWindowButton()) {
-        acs.add(CloseButton(onPressed: () => _handleCloseEvent()));
+        acs.add(CloseButton(onPressed: () => windowManager.close()));
       }
       acs.add(const SizedBox(width: 8));
     }