diff --git a/include/core/app_context.h b/include/core/app_context.h
index c77beee..847c632 100644
--- a/include/core/app_context.h
+++ b/include/core/app_context.h
@@ -2,7 +2,6 @@
 #define APP_CONTEXT_H
 
 #include "utils/string_ext.h"
-#include <iup.h>
 
 // 应用上下文结构体,用于存储应用运行时的状态
 typedef struct {
@@ -16,7 +15,4 @@ AppContext* create_app_context(void);
 // 销毁应用上下文
 void destroy_app_context(AppContext* ctx);
 
-// 获取应用上下文
-AppContext* get_app_context(Ihandle *ih);
-
 #endif // APP_CONTEXT_H
diff --git a/include/ui/ui_utils.h b/include/ui/ui_utils.h
index edaebbe..9b57c4e 100644
--- a/include/ui/ui_utils.h
+++ b/include/ui/ui_utils.h
@@ -5,9 +5,16 @@
 #include "utils/string_ext.h"
 
 // 刷新单个列表框样式
+// 功能说明:
+//  1. 路径有效性检查：无效路径显示红色前景色 (255 0 0)
+//  2. 重复检查：重复路径显示橙色前景色 (255 128 0)，只检查当前项之前的项
+//  3. 斑马纹背景：奇偶行交替显示不同背景色 (白/灰)
+// 注意: 该函数需要IUP控件已设置NAME属性
 void refresh_single_list_style(Ihandle *list);
 
 // 同步字符串列表到 UI 列表框
+// 将StringList中的所有项同步到IUP FlatList控件中
+// 会先清空列表然后重新添加所有项，最后刷新样式
 void sync_string_list_to_ui(Ihandle *list_ui, const StringList *str_list);
 
 #endif // UI_UTILS_H
diff --git a/include/utils/error_code.h b/include/utils/error_code.h
index 1d0bc79..cc9cf85 100644
--- a/include/utils/error_code.h
+++ b/include/utils/error_code.h
@@ -11,7 +11,8 @@ typedef enum {
     ERR_INVALID_FORMAT = -6,    // 无效格式
     ERR_REGISTRY_FAILED = -7,   // 注册表操作失败
     ERR_NOT_FOUND = -8,         // 未找到
-    ERR_EXISTS = -9             // 已存在
+    ERR_EXISTS = -9,            // 已存在
+    ERR_INVALID_INDEX = -10     // 无效索引
 } ErrorCode;
 
 const char* error_code_to_string(ErrorCode code);
diff --git a/include/utils/os_env.h b/include/utils/os_env.h
index 039f892..fd7e90e 100644
--- a/include/utils/os_env.h
+++ b/include/utils/os_env.h
@@ -1,6 +1,8 @@
 #ifndef OS_ENV_H
 #define OS_ENV_H
 
+#include "utils/error_code.h"
+
 // 检查是否以管理员权限运行
 int check_admin(void);
 
@@ -8,6 +10,6 @@ int check_admin(void);
 int is_path_valid(const char *path);
 
 // 备份注册表
-void backup_registry(void);
+ErrorCode backup_registry(void);
 
 #endif // OS_ENV_H
diff --git a/include/utils/ui_constants.h b/include/utils/ui_constants.h
new file mode 100644
index 0000000..b34ed9e
--- /dev/null
+++ b/include/utils/ui_constants.h
@@ -0,0 +1,38 @@
+#ifndef UI_CONSTANTS_H
+#define UI_CONSTANTS_H
+
+// 缓冲区大小常量
+#define PATH_BUFFER_SIZE 4096
+
+// 控件名称常量 - 统一管理所有IUP控件名称字符串
+// 使用这些常量替代硬编码字符串，便于维护和减少拼写错误
+
+// 列表控件
+#define CTRL_LIST_SYS "LIST_SYS"
+#define CTRL_LIST_USER "LIST_USER"
+
+// 选项卡
+#define CTRL_TABS_MAIN "TABS_MAIN"
+
+// 搜索框
+#define CTRL_TXT_SEARCH "TXT_SEARCH"
+
+// 状态标签
+#define CTRL_LBL_STATUS "LBL_STATUS"
+
+// 操作按钮
+#define CTRL_BTN_NEW "BTN_NEW"
+#define CTRL_BTN_EDIT "BTN_EDIT"
+#define CTRL_BTN_BROWSE "BTN_BROWSE"
+#define CTRL_BTN_DEL "BTN_DEL"
+#define CTRL_BTN_UP "BTN_UP"
+#define CTRL_BTN_DOWN "BTN_DOWN"
+#define CTRL_BTN_CLEAN "BTN_CLEAN"
+#define CTRL_BTN_IMPORT "BTN_IMPORT"
+#define CTRL_BTN_EXPORT "BTN_EXPORT"
+#define CTRL_BTN_OK "BTN_OK"
+#define CTRL_BTN_CANCEL "BTN_CANCEL"
+#define CTRL_BTN_HELP "BTN_HELP"
+#define CTRL_BTN_LANG "BTN_LANG"
+
+#endif // UI_CONSTANTS_H
diff --git a/src/controller/callbacks.c b/src/controller/callbacks.c
index 6f8849c..7a2026d 100644
--- a/src/controller/callbacks.c
+++ b/src/controller/callbacks.c
@@ -10,6 +10,7 @@
 #include "utils/safe_string.h"
 #include "utils/logger.h"
 #include "utils/i18n.h"
+#include "utils/ui_constants.h"
 #include "ui/ui_utils.h"
 #include "ui/dialogs.h"
 #include "ui/main_window.h"
@@ -21,19 +22,25 @@
 // 辅助函数：获取主对话框
 static Ihandle *get_main_dlg()
 {
-    // 在实际情况中，可以通过 IupGetHandle 注册名字，或者通过某个全局/静态缓存
-    // 但如果想彻底不用全局，我们可以在 IupSetHandle 里面把主窗口存下来
     return IupGetHandle("MAIN_DIALOG");
 }
 
+// 辅助函数：从对话框获取应用上下文（core层不依赖IUP，因此在此实现）
+static AppContext *get_app_context_from_dlg(Ihandle *dlg)
+{
+    if (!dlg)
+        return NULL;
+    return (AppContext *)IupGetAttribute(dlg, "APP_CONTEXT");
+}
+
 // 获取当前的缓存数据列表
 static StringList *get_current_raw_data(Ihandle *dlg)
 {
-    AppContext *ctx = get_app_context(dlg);
+    AppContext *ctx = get_app_context_from_dlg(dlg);
     if (!ctx)
         return NULL;
 
-    Ihandle *tabs_main = IupGetDialogChild(dlg, "TABS_MAIN");
+    Ihandle *tabs_main = IupGetDialogChild(dlg, CTRL_TABS_MAIN);
     int pos = IupGetInt(tabs_main, "VALUEPOS");
     if (pos == 0)
         return &ctx->sys_paths;
@@ -45,20 +52,20 @@ static StringList *get_current_raw_data(Ihandle *dlg)
 // 辅助函数：获取当前选中的列表UI控件
 static Ihandle *get_current_list(Ihandle *dlg)
 {
-    Ihandle *tabs_main = IupGetDialogChild(dlg, "TABS_MAIN");
+    Ihandle *tabs_main = IupGetDialogChild(dlg, CTRL_TABS_MAIN);
     int pos = IupGetInt(tabs_main, "VALUEPOS");
     if (pos == 0)
-        return IupGetDialogChild(dlg, "LIST_SYS");
+        return IupGetDialogChild(dlg, CTRL_LIST_SYS);
     if (pos == 1)
-        return IupGetDialogChild(dlg, "LIST_USER");
-    return IupGetDialogChild(dlg, "LIST_SYS");
+        return IupGetDialogChild(dlg, CTRL_LIST_USER);
+    return IupGetDialogChild(dlg, CTRL_LIST_SYS);
 }
 
 // 按钮回调：新建
 int btn_new_cb(Ihandle *self)
 {
     Ihandle *dlg = IupGetDialog(self);
-    char buffer[1024] = "";
+    char buffer[PATH_BUFFER_SIZE] = "";
     if (custom_input_dialog("新建环境变量", "请输入路径:", buffer, sizeof(buffer)))
     {
         if (strlen(buffer) > 0)
@@ -89,7 +96,7 @@ int btn_edit_cb(Ihandle *self)
     if (selected - 1 >= raw_data->count)
         return IUP_DEFAULT;
 
-    char buffer[4096];
+    char buffer[PATH_BUFFER_SIZE];
     safe_strcpy(buffer, sizeof(buffer), raw_data->items[selected - 1]);
 
     if (custom_input_dialog("编辑环境变量", "编辑路径:", buffer, sizeof(buffer)))
@@ -168,7 +175,7 @@ int btn_del_cb(Ihandle *self)
 
     sync_string_list_to_ui(current_list, raw_data);
 
-    Ihandle *lbl_status = IupGetDialogChild(dlg, "LBL_STATUS");
+    Ihandle *lbl_status = IupGetDialogChild(dlg, CTRL_LBL_STATUS);
     if (lbl_status)
         IupSetAttribute(lbl_status, "TITLE", lua_config_get_string("status", "deleted"));
 
@@ -280,14 +287,14 @@ int list_dropfiles_cb(Ihandle *self, const char *filename, int num, int x, int y
 {
     Ihandle *dlg = IupGetDialog(self);
     Ihandle *current_list = self;
-    AppContext *ctx = get_app_context(dlg);
+    AppContext *ctx = get_app_context_from_dlg(dlg);
     if (!ctx)
         return IUP_DEFAULT;
 
     StringList *raw_data = NULL;
-    if (self == IupGetDialogChild(dlg, "LIST_SYS"))
+    if (self == IupGetDialogChild(dlg, CTRL_LIST_SYS))
         raw_data = &ctx->sys_paths;
-    else if (self == IupGetDialogChild(dlg, "LIST_USER"))
+    else if (self == IupGetDialogChild(dlg, CTRL_LIST_USER))
         raw_data = &ctx->user_paths;
     else
         return IUP_DEFAULT;
@@ -295,7 +302,7 @@ int list_dropfiles_cb(Ihandle *self, const char *filename, int num, int x, int y
     DWORD attr = GetFileAttributesA(filename);
     if (attr != INVALID_FILE_ATTRIBUTES && (attr & FILE_ATTRIBUTE_DIRECTORY))
     {
-        Ihandle *txt_search = IupGetDialogChild(dlg, "TXT_SEARCH");
+        Ihandle *txt_search = IupGetDialogChild(dlg, CTRL_TXT_SEARCH);
         if (txt_search)
             IupSetAttribute(txt_search, "VALUE", "");
 
@@ -306,7 +313,7 @@ int list_dropfiles_cb(Ihandle *self, const char *filename, int num, int x, int y
     }
     else
     {
-        Ihandle *lbl_status = IupGetDialogChild(dlg, "LBL_STATUS");
+        Ihandle *lbl_status = IupGetDialogChild(dlg, CTRL_LBL_STATUS);
         if (lbl_status)
             IupSetAttribute(lbl_status, "TITLE", lua_config_get_string("status", "drag_folder_only"));
     }
@@ -329,7 +336,7 @@ int list_k_any_cb(Ihandle *self, int c)
 int btn_ok_cb(Ihandle *self)
 {
     Ihandle *dlg = IupGetDialog(self);
-    AppContext *ctx = get_app_context(dlg);
+    AppContext *ctx = get_app_context_from_dlg(dlg);
     if (!ctx)
         return IUP_DEFAULT;
 
@@ -344,7 +351,7 @@ int btn_ok_cb(Ihandle *self)
     ErrorCode sys_ok = save_system_paths(&ctx->sys_paths);
     ErrorCode user_ok = save_user_paths(&ctx->user_paths);
 
-    Ihandle *lbl_status = IupGetDialogChild(dlg, "LBL_STATUS");
+    Ihandle *lbl_status = IupGetDialogChild(dlg, CTRL_LBL_STATUS);
 
     if (sys_ok == ERR_OK && user_ok == ERR_OK)
     {
@@ -383,7 +390,7 @@ int btn_cancel_cb(Ihandle *self)
 int btn_import_cb(Ihandle *self)
 {
     Ihandle *dlg = IupGetDialog(self);
-    AppContext *ctx = get_app_context(dlg);
+    AppContext *ctx = get_app_context_from_dlg(dlg);
     if (!ctx)
         return IUP_DEFAULT;
 
@@ -443,7 +450,7 @@ int btn_import_cb(Ihandle *self)
                     {
                         add_string_list(&ctx->sys_paths, imported.system.items[i]);
                     }
-                    Ihandle *list_sys = IupGetDialogChild(dlg, "LIST_SYS");
+                    Ihandle *list_sys = IupGetDialogChild(dlg, CTRL_LIST_SYS);
                     sync_string_list_to_ui(list_sys, &ctx->sys_paths);
                     total_imported += imported.system.count;
                 }
@@ -455,7 +462,7 @@ int btn_import_cb(Ihandle *self)
                     {
                         add_string_list(&ctx->user_paths, imported.user.items[i]);
                     }
-                    Ihandle *list_user = IupGetDialogChild(dlg, "LIST_USER");
+                    Ihandle *list_user = IupGetDialogChild(dlg, CTRL_LIST_USER);
                     sync_string_list_to_ui(list_user, &ctx->user_paths);
                     total_imported += imported.user.count;
                 }
@@ -464,7 +471,7 @@ int btn_import_cb(Ihandle *self)
                 snprintf(msg, sizeof(msg), "成功导入 %d 个路径！", total_imported);
                 IupMessage("导入成功", msg);
 
-                Ihandle *lbl_status = IupGetDialogChild(dlg, "LBL_STATUS");
+                Ihandle *lbl_status = IupGetDialogChild(dlg, CTRL_LBL_STATUS);
                 if (lbl_status)
                     IupSetAttribute(lbl_status, "TITLE", lua_config_get_string("status", "loaded"));
             }
@@ -483,7 +490,7 @@ int btn_import_cb(Ihandle *self)
 int btn_export_cb(Ihandle *self)
 {
     Ihandle *dlg = IupGetDialog(self);
-    AppContext *ctx = get_app_context(dlg);
+    AppContext *ctx = get_app_context_from_dlg(dlg);
     if (!ctx)
         return IUP_DEFAULT;
 
@@ -545,7 +552,7 @@ void load_all_paths(void)
     Ihandle *dlg = get_main_dlg();
     if (!dlg)
         return;
-    AppContext *ctx = get_app_context(dlg);
+    AppContext *ctx = get_app_context_from_dlg(dlg);
     if (!ctx)
         return;
 
@@ -565,13 +572,13 @@ void load_all_paths(void)
         log_info("Loaded user paths: %d", ctx->user_paths.count);
     }
 
-    Ihandle *list_sys = IupGetDialogChild(dlg, "LIST_SYS");
-    Ihandle *list_user = IupGetDialogChild(dlg, "LIST_USER");
+    Ihandle *list_sys = IupGetDialogChild(dlg, CTRL_LIST_SYS);
+    Ihandle *list_user = IupGetDialogChild(dlg, CTRL_LIST_USER);
 
     sync_string_list_to_ui(list_sys, &ctx->sys_paths);
     sync_string_list_to_ui(list_user, &ctx->user_paths);
 
-    Ihandle *lbl_status = IupGetDialogChild(dlg, "LBL_STATUS");
+    Ihandle *lbl_status = IupGetDialogChild(dlg, CTRL_LBL_STATUS);
     if (lbl_status)
         IupSetAttribute(lbl_status, "TITLE", lua_config_get_string("status", "loaded"));
 }
diff --git a/src/core/app_context.c b/src/core/app_context.c
index d2f0bd3..6e38b30 100644
--- a/src/core/app_context.c
+++ b/src/core/app_context.c
@@ -22,15 +22,4 @@ void destroy_app_context(AppContext *ctx)
         clear_string_list(&ctx->user_paths);
         free(ctx);
     }
-}
-
-// 获取应用上下文
-AppContext *get_app_context(Ihandle *ih)
-{
-    if (!ih)
-        return NULL;
-    Ihandle *dlg = IupGetDialog(ih);
-    if (!dlg)
-        return NULL;
-    return (AppContext *)IupGetAttribute(dlg, "APP_CONTEXT");
 }
\ No newline at end of file
diff --git a/src/core/path_manager.c b/src/core/path_manager.c
index abaddd3..6df9a9f 100644
--- a/src/core/path_manager.c
+++ b/src/core/path_manager.c
@@ -8,9 +8,11 @@
 // 删除指定索引的路径项
 ErrorCode path_manager_remove_at(StringList *list, int index)
 {
-    if (!list || index < 0 || index >= list->count)
+    if (!list)
         return ERR_NULL_PTR;
-    
+    if (index < 0 || index >= list->count)
+        return ERR_INVALID_INDEX;
+
     free(list->items[index]);
     for (int i = index; i < list->count - 1; i++)
     {
@@ -24,9 +26,11 @@ ErrorCode path_manager_remove_at(StringList *list, int index)
 // 向上移动路径项
 ErrorCode path_manager_move_up(StringList *list, int index)
 {
-    if (!list || index <= 0 || index >= list->count)
+    if (!list)
         return ERR_NULL_PTR;
-    
+    if (index <= 0 || index >= list->count)
+        return ERR_INVALID_INDEX;
+
     char *temp = list->items[index];
     list->items[index] = list->items[index - 1];
     list->items[index - 1] = temp;
@@ -36,9 +40,11 @@ ErrorCode path_manager_move_up(StringList *list, int index)
 // 向下移动路径项
 ErrorCode path_manager_move_down(StringList *list, int index)
 {
-    if (!list || index < 0 || index >= list->count - 1)
+    if (!list)
         return ERR_NULL_PTR;
-    
+    if (index < 0 || index >= list->count - 1)
+        return ERR_INVALID_INDEX;
+
     char *temp = list->items[index];
     list->items[index] = list->items[index + 1];
     list->items[index + 1] = temp;
diff --git a/src/main.c b/src/main.c
index 340acaa..fc3f77a 100644
--- a/src/main.c
+++ b/src/main.c
@@ -5,7 +5,16 @@
 #include <wchar.h>
 #include <libintl.h>
 #include "core/app_context.h"
+#include "utils/ui_constants.h"
 #include "core/lua_config.h"
+
+// 需要在非管理员模式禁用的按钮列表
+#define ADMIN_DISABLE_COUNT 10
+static const char* ADMIN_DISABLE_BUTTONS[] = {
+    CTRL_BTN_NEW, CTRL_BTN_EDIT, CTRL_BTN_BROWSE, CTRL_BTN_DEL,
+    CTRL_BTN_UP, CTRL_BTN_DOWN, CTRL_BTN_CLEAN, CTRL_BTN_OK,
+    CTRL_BTN_IMPORT, CTRL_BTN_EXPORT
+};
 #include "utils/string_ext.h"
 #include "utils/os_env.h"
 #include "utils/logger.h"
@@ -98,42 +107,18 @@ int main(int argc, char **argv)
     {
         IupMessage(_("Warning"), _(lua_config_get_string("status", "admin_warning")));
 
-        Ihandle *lbl_status = IupGetDialogChild(dlg, "LBL_STATUS");
+        // 设置只读状态提示
+        Ihandle *lbl_status = IupGetDialogChild(dlg, CTRL_LBL_STATUS);
         if (lbl_status)
             IupSetAttribute(lbl_status, "TITLE", _(lua_config_get_string("status", "readonly")));
 
-        Ihandle *btn_new = IupGetDialogChild(dlg, "BTN_NEW");
-        Ihandle *btn_edit = IupGetDialogChild(dlg, "BTN_EDIT");
-        Ihandle *btn_browse = IupGetDialogChild(dlg, "BTN_BROWSE");
-        Ihandle *btn_del = IupGetDialogChild(dlg, "BTN_DEL");
-        Ihandle *btn_up = IupGetDialogChild(dlg, "BTN_UP");
-        Ihandle *btn_down = IupGetDialogChild(dlg, "BTN_DOWN");
-        Ihandle *btn_clean = IupGetDialogChild(dlg, "BTN_CLEAN");
-        Ihandle *btn_ok = IupGetDialogChild(dlg, "BTN_OK");
-
-        if (btn_new)
-            IupSetAttribute(btn_new, "ACTIVE", "NO");
-        if (btn_edit)
-            IupSetAttribute(btn_edit, "ACTIVE", "NO");
-        if (btn_browse)
-            IupSetAttribute(btn_browse, "ACTIVE", "NO");
-        if (btn_del)
-            IupSetAttribute(btn_del, "ACTIVE", "NO");
-        if (btn_up)
-            IupSetAttribute(btn_up, "ACTIVE", "NO");
-        if (btn_down)
-            IupSetAttribute(btn_down, "ACTIVE", "NO");
-        if (btn_clean)
-            IupSetAttribute(btn_clean, "ACTIVE", "NO");
-        if (btn_ok)
-            IupSetAttribute(btn_ok, "ACTIVE", "NO");
-
-        Ihandle *btn_import = IupGetDialogChild(dlg, "BTN_IMPORT");
-        Ihandle *btn_export = IupGetDialogChild(dlg, "BTN_EXPORT");
-        if (btn_import)
-            IupSetAttribute(btn_import, "ACTIVE", "NO");
-        if (btn_export)
-            IupSetAttribute(btn_export, "ACTIVE", "NO");
+        // 禁用所有需要管理员权限的按钮
+        for (int i = 0; i < ADMIN_DISABLE_COUNT; i++)
+        {
+            Ihandle *btn = IupGetDialogChild(dlg, ADMIN_DISABLE_BUTTONS[i]);
+            if (btn)
+                IupSetAttribute(btn, "ACTIVE", "NO");
+        }
     }
 
     IupShowXY(dlg, IUP_CENTER, IUP_CENTER);
diff --git a/src/ui/main_window.c b/src/ui/main_window.c
index bc3dfb8..02b3316 100644
--- a/src/ui/main_window.c
+++ b/src/ui/main_window.c
@@ -2,6 +2,7 @@
 #include "controller/callbacks.h"
 #include "core/lua_config.h"
 #include "utils/i18n.h"
+#include "utils/ui_constants.h"
 #include <stddef.h>
 #include <string.h>
 
@@ -26,13 +27,13 @@ static Ihandle *create_path_list(const char *name)
 Ihandle *create_main_window(void)
 {
     // 创建系统路径列表
-    Ihandle *list_sys = create_path_list("LIST_SYS");
+    Ihandle *list_sys = create_path_list(CTRL_LIST_SYS);
     // 创建用户路径列表
-    Ihandle *list_user = create_path_list("LIST_USER");
+    Ihandle *list_user = create_path_list(CTRL_LIST_USER);
 
     // 创建搜索框
     Ihandle *txt_search = IupText(NULL);
-    IupSetAttribute(txt_search, "NAME", "TXT_SEARCH");
+    IupSetAttribute(txt_search, "NAME", CTRL_TXT_SEARCH);
     IupSetAttribute(txt_search, "EXPAND", "HORIZONTAL");
     IupSetAttribute(txt_search, "CUEBANNER", lua_config_get_string("label", "search_placeholder"));
     IupSetCallback(txt_search, "VALUECHANGED_CB", (Icallback)txt_search_cb);
@@ -42,42 +43,42 @@ Ihandle *create_main_window(void)
         IupVbox(list_sys, NULL),
         IupVbox(list_user, NULL),
         NULL);
-    IupSetAttribute(tabs_main, "NAME", "TABS_MAIN");
+    IupSetAttribute(tabs_main, "NAME", CTRL_TABS_MAIN);
     IupSetAttribute(tabs_main, "TABTITLE0", _(lua_config_get_string("label", "tab_sys")));
     IupSetAttribute(tabs_main, "TABTITLE1", _(lua_config_get_string("label", "tab_user")));
     IupSetAttribute(tabs_main, "TABTYPE", "TOP");
 
     // 创建操作按钮
     Ihandle *btn_new = IupButton(_(lua_config_get_string("button", "new")), NULL);
-    IupSetAttribute(btn_new, "NAME", "BTN_NEW");
+    IupSetAttribute(btn_new, "NAME", CTRL_BTN_NEW);
 
     Ihandle *btn_edit = IupButton(_(lua_config_get_string("button", "edit")), NULL);
-    IupSetAttribute(btn_edit, "NAME", "BTN_EDIT");
+    IupSetAttribute(btn_edit, "NAME", CTRL_BTN_EDIT);
 
     Ihandle *btn_browse = IupButton(_(lua_config_get_string("button", "browse")), NULL);
-    IupSetAttribute(btn_browse, "NAME", "BTN_BROWSE");
+    IupSetAttribute(btn_browse, "NAME", CTRL_BTN_BROWSE);
 
     Ihandle *btn_del = IupButton(_(lua_config_get_string("button", "del")), NULL);
-    IupSetAttribute(btn_del, "NAME", "BTN_DEL");
+    IupSetAttribute(btn_del, "NAME", CTRL_BTN_DEL);
 
     Ihandle *btn_up = IupButton(_(lua_config_get_string("button", "up")), NULL);
-    IupSetAttribute(btn_up, "NAME", "BTN_UP");
+    IupSetAttribute(btn_up, "NAME", CTRL_BTN_UP);
 
     Ihandle *btn_down = IupButton(_(lua_config_get_string("button", "down")), NULL);
-    IupSetAttribute(btn_down, "NAME", "BTN_DOWN");
+    IupSetAttribute(btn_down, "NAME", CTRL_BTN_DOWN);
 
     Ihandle *btn_clean = IupButton(_(lua_config_get_string("button", "clean")), NULL);
-    IupSetAttribute(btn_clean, "NAME", "BTN_CLEAN");
+    IupSetAttribute(btn_clean, "NAME", CTRL_BTN_CLEAN);
 
     Ihandle *btn_import = IupButton(_(lua_config_get_string("button", "import")), NULL);
-    IupSetAttribute(btn_import, "NAME", "BTN_IMPORT");
+    IupSetAttribute(btn_import, "NAME", CTRL_BTN_IMPORT);
 
     Ihandle *btn_export = IupButton(_(lua_config_get_string("button", "export")), NULL);
-    IupSetAttribute(btn_export, "NAME", "BTN_EXPORT");
+    IupSetAttribute(btn_export, "NAME", CTRL_BTN_EXPORT);
 
     // 创建语言切换按钮
     Ihandle *btn_lang = IupButton(_("Language"), NULL);
-    IupSetAttribute(btn_lang, "NAME", "BTN_LANG");
+    IupSetAttribute(btn_lang, "NAME", CTRL_BTN_LANG);
     IupSetCallback(btn_lang, "ACTION", (Icallback)btn_lang_cb);
 
     // 设置按钮回调
@@ -123,16 +124,16 @@ Ihandle *create_main_window(void)
 
     // 创建状态标签
     Ihandle *lbl_status = IupLabel(lua_config_get_string("status", "normal"));
-    IupSetAttribute(lbl_status, "NAME", "LBL_STATUS");
+    IupSetAttribute(lbl_status, "NAME", CTRL_LBL_STATUS);
     IupSetAttribute(lbl_status, "EXPAND", "HORIZONTAL");
 
     // 创建底部按钮
     Ihandle *btn_ok = IupButton(_(lua_config_get_string("button", "ok")), NULL);
-    IupSetAttribute(btn_ok, "NAME", "BTN_OK");
+    IupSetAttribute(btn_ok, "NAME", CTRL_BTN_OK);
     Ihandle *btn_cancel = IupButton(_(lua_config_get_string("button", "cancel")), NULL);
-    IupSetAttribute(btn_cancel, "NAME", "BTN_CANCEL");
+    IupSetAttribute(btn_cancel, "NAME", CTRL_BTN_CANCEL);
     Ihandle *btn_help = IupButton(_(lua_config_get_string("button", "help")), NULL);
-    IupSetAttribute(btn_help, "NAME", "BTN_HELP");
+    IupSetAttribute(btn_help, "NAME", CTRL_BTN_HELP);
 
     // 设置底部按钮回调
     IupSetCallback(btn_ok, "ACTION", (Icallback)btn_ok_cb);
@@ -176,60 +177,37 @@ void refresh_main_window_ui(Ihandle *main_dlg)
     if (!main_dlg)
         return;
 
+    // 设置窗口标题
     IupSetAttribute(main_dlg, "TITLE", _(lua_config_get_string("app", "name")));
 
+    // 设置选项卡标题
     IupSetAttribute(main_dlg, "TABTITLE0", _(lua_config_get_string("label", "tab_sys")));
     IupSetAttribute(main_dlg, "TABTITLE1", _(lua_config_get_string("label", "tab_user")));
 
-    Ihandle *btn = IupGetDialogChild(main_dlg, "BTN_NEW");
-    if (btn)
-        IupSetAttribute(btn, "TITLE", _(lua_config_get_string("button", "new")));
+    // 辅助函数：设置子控件标题
+    #define SET_CHILD_TITLE(btn_name, text_key) \
+        do { \
+            Ihandle *btn = IupGetDialogChild(main_dlg, btn_name); \
+            if (btn) IupSetAttribute(btn, "TITLE", _(lua_config_get_string("button", text_key))); \
+        } while(0)
 
-    btn = IupGetDialogChild(main_dlg, "BTN_EDIT");
-    if (btn)
-        IupSetAttribute(btn, "TITLE", _(lua_config_get_string("button", "edit")));
+    SET_CHILD_TITLE(CTRL_BTN_NEW, "new");
+    SET_CHILD_TITLE(CTRL_BTN_EDIT, "edit");
+    SET_CHILD_TITLE(CTRL_BTN_BROWSE, "browse");
+    SET_CHILD_TITLE(CTRL_BTN_DEL, "del");
+    SET_CHILD_TITLE(CTRL_BTN_UP, "up");
+    SET_CHILD_TITLE(CTRL_BTN_DOWN, "down");
+    SET_CHILD_TITLE(CTRL_BTN_CLEAN, "clean");
+    SET_CHILD_TITLE(CTRL_BTN_IMPORT, "import");
+    SET_CHILD_TITLE(CTRL_BTN_EXPORT, "export");
+    SET_CHILD_TITLE(CTRL_BTN_OK, "ok");
+    SET_CHILD_TITLE(CTRL_BTN_CANCEL, "cancel");
+    SET_CHILD_TITLE(CTRL_BTN_HELP, "help");
 
-    btn = IupGetDialogChild(main_dlg, "BTN_BROWSE");
-    if (btn)
-        IupSetAttribute(btn, "TITLE", _(lua_config_get_string("button", "browse")));
+    #undef SET_CHILD_TITLE
 
-    btn = IupGetDialogChild(main_dlg, "BTN_DEL");
-    if (btn)
-        IupSetAttribute(btn, "TITLE", _(lua_config_get_string("button", "del")));
-
-    btn = IupGetDialogChild(main_dlg, "BTN_UP");
-    if (btn)
-        IupSetAttribute(btn, "TITLE", _(lua_config_get_string("button", "up")));
-
-    btn = IupGetDialogChild(main_dlg, "BTN_DOWN");
-    if (btn)
-        IupSetAttribute(btn, "TITLE", _(lua_config_get_string("button", "down")));
-
-    btn = IupGetDialogChild(main_dlg, "BTN_CLEAN");
-    if (btn)
-        IupSetAttribute(btn, "TITLE", _(lua_config_get_string("button", "clean")));
-
-    btn = IupGetDialogChild(main_dlg, "BTN_IMPORT");
-    if (btn)
-        IupSetAttribute(btn, "TITLE", _(lua_config_get_string("button", "import")));
-
-    btn = IupGetDialogChild(main_dlg, "BTN_EXPORT");
-    if (btn)
-        IupSetAttribute(btn, "TITLE", _(lua_config_get_string("button", "export")));
-
-    btn = IupGetDialogChild(main_dlg, "BTN_LANG");
-    if (btn)
-        IupSetAttribute(btn, "TITLE", _("Language"));
-
-    btn = IupGetDialogChild(main_dlg, "BTN_OK");
-    if (btn)
-        IupSetAttribute(btn, "TITLE", _(lua_config_get_string("button", "ok")));
-
-    btn = IupGetDialogChild(main_dlg, "BTN_CANCEL");
-    if (btn)
-        IupSetAttribute(btn, "TITLE", _(lua_config_get_string("button", "cancel")));
-
-    btn = IupGetDialogChild(main_dlg, "BTN_HELP");
-    if (btn)
-        IupSetAttribute(btn, "TITLE", _(lua_config_get_string("button", "help")));
+    // 语言切换按钮标题单独处理（不是从配置读取）
+    Ihandle *btn_lang = IupGetDialogChild(main_dlg, CTRL_BTN_LANG);
+    if (btn_lang)
+        IupSetAttribute(btn_lang, "TITLE", _("Language"));
 }
\ No newline at end of file
diff --git a/src/utils/os_env.c b/src/utils/os_env.c
index ae5f55c..de032fb 100644
--- a/src/utils/os_env.c
+++ b/src/utils/os_env.c
@@ -5,6 +5,7 @@
 #include <stdlib.h>
 #include <time.h>
 #include <direct.h>
+#include <shlobj.h>
 
 // 检查管理员权限
 int check_admin(void)
@@ -45,46 +46,87 @@ int is_path_valid(const char *path)
 }
 
 // 备份注册表
-void backup_registry(void)
+// 备份到 %APPDATA%/PathEditor/backups/ 目录下
+ErrorCode backup_registry(void)
 {
-    // 创建 records 目录
-    if (_mkdir("records") == -1)
+    // 获取 AppData 路径
+    wchar_t appdata_path[MAX_PATH];
+    if (SHGetFolderPathW(NULL, CSIDL_APPDATA, NULL, 0, appdata_path) != S_OK)
     {
-        // 目录可能已存在，忽略错误
+        return ERR_FAILED;
     }
 
-    // 获取当前时间
+    // 创建备份目录
+    wchar_t backup_dir[MAX_PATH];
+    swprintf(backup_dir, MAX_PATH, L"%s\\PathEditor\\backups", appdata_path);
+    CreateDirectoryW(backup_dir, NULL);
+
+    // 生成时间戳
     time_t t = time(NULL);
     struct tm *tm_info = localtime(&t);
-    char time_str[64];
-    strftime(time_str, sizeof(time_str), "%Y%m%d_%H%M%S", tm_info);
+    wchar_t timestamp[64];
+    wcsftime(timestamp, sizeof(timestamp), L"%Y%m%d_%H%M%S", tm_info);
 
     // 构造备份文件名
-    char filename[256];
-    snprintf(filename, sizeof(filename), "records\\backup_%s.reg", time_str);
+    wchar_t backup_file[MAX_PATH];
+    swprintf(backup_file, MAX_PATH, L"%s\\path_backup_%s.txt", backup_dir, timestamp);
 
-    // 构造 reg export 命令
-    char full_cmd[1024];
-    snprintf(full_cmd, sizeof(full_cmd), "reg.exe export \"HKLM\\SYSTEM\\CurrentControlSet\\Control\\Session Manager\\Environment\" \"%s\" /y", filename);
+    // 打开文件
+    FILE *fp = _wfopen(backup_file, L"w, ccs=UTF-8");
+    if (!fp)
+        return ERR_FAILED;
 
-    // 使用 CreateProcess 隐藏窗口执行
-    STARTUPINFOA si;
-    PROCESS_INFORMATION pi;
-    memset(&si, 0, sizeof(si));
-    si.cb = sizeof(si);
-    si.dwFlags = STARTF_USESHOWWINDOW;
-    si.wShowWindow = SW_HIDE; // 隐藏窗口
-    memset(&pi, 0, sizeof(pi));
+    // 备份系统 PATH
+    HKEY hKey;
+    int success = 0;
 
-    if (CreateProcessA(NULL, full_cmd, NULL, NULL, FALSE, CREATE_NO_WINDOW, NULL, NULL, &si, &pi))
+    if (RegOpenKeyExW(HKEY_LOCAL_MACHINE,
+                      L"SYSTEM\\CurrentControlSet\\Control\\Session Manager\\Environment",
+                      0, KEY_READ, &hKey) == ERROR_SUCCESS)
     {
-        // 等待进程结束
-        WaitForSingleObject(pi.hProcess, INFINITE);
-
-        DWORD exit_code = 0;
-        GetExitCodeProcess(pi.hProcess, &exit_code);
-
-        CloseHandle(pi.hProcess);
-        CloseHandle(pi.hThread);
+        DWORD type, size;
+        if (RegQueryValueExW(hKey, L"Path", NULL, &type, NULL, &size) == ERROR_SUCCESS)
+        {
+            wchar_t *buffer = (wchar_t *)malloc(size + 2);
+            if (buffer)
+            {
+                memset(buffer, 0, size + 2);
+                if (RegQueryValueExW(hKey, L"Path", NULL, &type, (LPBYTE)buffer, &size) == ERROR_SUCCESS)
+                {
+                    fwprintf(fp, L"# System PATH Backup\n");
+                    fwprintf(fp, L"%s\n\n", buffer);
+                    success = 1;
+                }
+                free(buffer);
+            }
+        }
+        RegCloseKey(hKey);
     }
+
+    // 备份用户 PATH
+    if (RegOpenKeyExW(HKEY_CURRENT_USER,
+                      L"Environment",
+                      0, KEY_READ, &hKey) == ERROR_SUCCESS)
+    {
+        DWORD type, size;
+        if (RegQueryValueExW(hKey, L"Path", NULL, &type, NULL, &size) == ERROR_SUCCESS)
+        {
+            wchar_t *buffer = (wchar_t *)malloc(size + 2);
+            if (buffer)
+            {
+                memset(buffer, 0, size + 2);
+                if (RegQueryValueExW(hKey, L"Path", NULL, &type, (LPBYTE)buffer, &size) == ERROR_SUCCESS)
+                {
+                    fwprintf(fp, L"# User PATH Backup\n");
+                    fwprintf(fp, L"%s\n", buffer);
+                    success = 1;
+                }
+                free(buffer);
+            }
+        }
+        RegCloseKey(hKey);
+    }
+
+    fclose(fp);
+    return success ? ERR_OK : ERR_FAILED;
 }
\ No newline at end of file