docs: 更新注释与README，补充编译说明和架构描述

- 在 main.c 中添加编译和打包命令的注释
- 在 README.md 中新增“架构与二次开发”章节，说明项目的模块化设计和配置管理

LICENSE

@@ -0,0 +1,21 @@
+# MIT License
+
+Copyright (c) 2026 LHY
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

Makefile

@@ -18,9 +18,9 @@ CFLAGS = -Wall -O2 -I$(INCLUDE_DIR) -I$(LOCAL_INCLUDE_DIR) -D_WIN32 -DUNICODE -D
 LDFLAGS = -L$(LIB_DIR) -liup -liupcd -lgdi32 -lcomdlg32 -lcomctl32 -luuid -lole32 -ladvapi32 -mwindows
 
 # Source
-SRC = src/main.c src/utils.c src/registry.c src/callbacks.c
+SRC = src/main.c src/utils.c src/registry.c src/ui.c src/ui_utils.c src/cb_edit.c src/cb_file.c src/cb_main.c src/globals.c
 RES = ico/resources.rc
-OBJ = $(OBJ_DIR)/main.o $(OBJ_DIR)/utils.o $(OBJ_DIR)/registry.o $(OBJ_DIR)/callbacks.o $(OBJ_DIR)/resources.o
+OBJ = $(OBJ_DIR)/main.o $(OBJ_DIR)/utils.o $(OBJ_DIR)/registry.o $(OBJ_DIR)/ui.o $(OBJ_DIR)/ui_utils.o $(OBJ_DIR)/cb_edit.o $(OBJ_DIR)/cb_file.o $(OBJ_DIR)/cb_main.o $(OBJ_DIR)/globals.o $(OBJ_DIR)/resources.o
 EXE = $(BIN_DIR)/PathEditor.exe
 
 all: $(BIN_DIR) $(OBJ_DIR) $(EXE)
@@ -43,7 +43,22 @@ $(OBJ_DIR)/utils.o: src/utils.c
 $(OBJ_DIR)/registry.o: src/registry.c
 	$(CC) $(CFLAGS) -c -o $@ $<
 
-$(OBJ_DIR)/callbacks.o: src/callbacks.c
+$(OBJ_DIR)/ui.o: src/ui.c
+	$(CC) $(CFLAGS) -c -o $@ $<
+
+$(OBJ_DIR)/ui_utils.o: src/ui_utils.c
+	$(CC) $(CFLAGS) -c -o $@ $<
+
+$(OBJ_DIR)/cb_edit.o: src/cb_edit.c
+	$(CC) $(CFLAGS) -c -o $@ $<
+
+$(OBJ_DIR)/cb_file.o: src/cb_file.c
+	$(CC) $(CFLAGS) -c -o $@ $<
+
+$(OBJ_DIR)/cb_main.o: src/cb_main.c
+	$(CC) $(CFLAGS) -c -o $@ $<
+
+$(OBJ_DIR)/globals.o: src/globals.c
 	$(CC) $(CFLAGS) -c -o $@ $<
 
 $(OBJ_DIR)/resources.o: ico/resources.rc

README.md

@@ -1,18 +1,51 @@
 # Path Editor (系统环境变量编辑器)
 
-一个简单、轻量级的 Windows 系统环境变量（PATH）编辑器，基于 C 语言和 IUP 图形库开发。
+* Path Editor 是一个专为 Windows 用户设计的系统环境变量（PATH）管理工具。它基于原生 C 语言和 IUP 图形库开发，旨在替代 Windows 自带的简陋编辑界面。
+* 相比系统自带的编辑器，Path Editor 提供了更加直观的双视图（系统/用户变量）界面、智能的路径有效性检测、自动备份机制以及便捷的拖拽操作，让环境变量的管理变得安全、高效且轻松。无论您是开发者还是系统管理员，它都是您配置开发环境的得力助手。
 
 ## ✨ 功能特点
 
-* **可视化编辑**：直观地查看和管理系统 PATH 环境变量。
-* **安全操作**：必须以管理员身份运行才能保存更改，防止误操作。
+* **🛡️ 安全第一**：
+  * **自动备份**：每次保存前自动备份注册表，防止意外。
+  * **只读模式**：非管理员运行时自动切换到只读模式，防止误操作。
+  * **权限检测**：智能检测当前运行权限。
+
+* **📑 双视图与预览**：
+  * **分离管理**：完美支持 **System (系统变量)** 和 **User (用户变量)** 的分离查看与编辑。
+  * **合并预览**：新增标签页，展示最终解析后的完整 PATH 顺序（系统在前，用户在后），方便排查冲突。
+  * **变量展开**：鼠标悬停在包含变量（如 `%JAVA_HOME%`）的路径上时，自动显示解析后的绝对路径。
+
+* **🔴 智能诊断与维护**：
+  * **无效路径高亮**：自动检测路径是否存在，不存在的显示为红色。
+  * **重复路径高亮**：自动检测重复项，重复的显示为橙色。
+  * **一键清理**：智能移除所有无效和重复的路径，保持环境整洁。
+
+* **📂 高级交互**：
+  * **多选支持**：支持使用 `Ctrl` 或 `Shift` 进行多选，批量删除或移动路径。
+  * **撤销/重做**：支持 `Ctrl+Z` 撤销和 `Ctrl+Y` 重做，防止误操作，并提供直观的工具栏按钮。
+  * **拖拽支持**：直接将文件夹拖入窗口即可添加（支持管理员模式下的 UIPI 穿透）。
+  * **实时搜索**：顶部搜索框支持不区分大小写的实时过滤查找（支持快捷键 `Ctrl+F`）。
+  * **全局快捷键**：支持 `Ctrl+N` 新建、`Ctrl+S` 保存、`Delete` 删除等快捷操作。
+
+* **🎨 个性化**：
+  * **深色模式**：一键切换深色主题，保护视力。
+
 * **便捷管理**：
   * ➕ **新建**：添加新路径到列表。
   * 📂 **浏览**：直接从文件资源管理器选择目录添加。
-  * ✏️ **编辑**：修改现有路径。
+  * ✏️ **编辑**：双击或点击按钮修改现有路径。
   * 🗑️ **删除**：移除不需要的路径。
   * ⬆️⬇️ **排序**：上移/下移调整路径优先级。
-* **轻量级**：原生 C 语言编写，运行速度快，占用资源少。
+  * 📥/📤 **导入导出**：支持将环境变量导出为 `.txt` 文本文件备份，或从文件导入恢复。
+
+* **轻量级**：原生 C 语言编写，无臃肿依赖，运行速度极快。
+
+## 🏗️ 架构与二次开发
+
+本项目注重代码的模块化和可维护性，非常适合作为 C 语言桌面程序开发的参考：
+
+* **统一配置中心**：所有的 UI 尺寸、间距、颜色等常量配置均提取在 `include/config.h` 中，只需修改宏定义即可轻松定制属于你的专属界面风格。
+* **清晰的全局状态**：全局变量和常量被独立分离在 `src/globals.c` / `include/globals.h` 中管理，使得核心业务逻辑更加整洁。
 
 ## 📦 下载与安装
 
@@ -30,6 +63,7 @@
 * GCC 编译器 (推荐 MinGW-w64)
 * Make 工具
 * IUP 库 (已包含在 `libs` 目录下)
+* Inno Setup 6 (仅打包需要)
 
 ### 编译步骤
 
@@ -54,16 +88,26 @@
 本项目使用 Inno Setup 生成安装包。
 
 1. 确保已安装 [Inno Setup 6](https://jrsoftware.org/isdl.php)。
-2. 编译项目生成 exe 文件。
-3. 使用 Inno Setup 编译 `dist/installer.iss` 脚本。
+2. 运行根目录下的 `build_installer.bat` 脚本。
+3. 生成的安装包将位于 `dist/dist/PathEditorSetup.exe`。
 
 ## 📝 使用说明
 
 1. **启动**：右键点击程序图标，选择“以管理员身份运行”。
 2. **查看**：程序启动后会自动加载当前的系统 PATH 变量。
-3. **修改**：使用右侧按钮栏进行添加、删除、移动等操作。
-4. **保存**：操作完成后，务必点击底部的【确定】按钮保存更改。
-5. **生效**：保存后，某些正在运行的程序可能需要重启才能识别新的环境变量。CMD 或 PowerShell 窗口需要重新打开。
+   * **红色**条目表示路径不存在。
+   * **橙色**条目表示路径重复。
+   * **变量预览**：鼠标悬停在带 `%` 的变量上可查看实际路径。
+3. **搜索**：在顶部输入关键词或按 `Ctrl+F` 可快速筛选。
+4. **修改**：
+   * **拖拽**：将文件夹拖入列表可直接添加。
+   * **多选**：按住 `Ctrl` 或 `Shift` 可选中多项进行批量删除。
+   * **撤销/重做**：误操作时可使用 `Ctrl+Z` / `Ctrl+Y` 或工具栏按钮回退。
+   * **常规操作**：使用右侧按钮栏进行新建、编辑、移动等操作。
+   * **清理**：点击“一键清理”可自动删除无效和重复项。
+   * **导入/导出**：使用导入导出功能备份或恢复配置。
+5. **保存**：操作完成后，务必点击底部的【确定】按钮（或按 `Ctrl+S`）保存更改。
+6. **生效**：保存后，某些正在运行的程序可能需要重启才能识别新的环境变量。CMD 或 PowerShell 窗口需要重新打开。
 
 ## 👤 作者信息
 

build_installer.bat

@@ -0,0 +1,15 @@
+@echo off
+echo Copying DLLs...
+if not exist bin mkdir bin
+copy /Y "libs\iup-3.31_Win64_dllw6_lib\*.dll" bin\
+
+echo Building Installer...
+"D:\Program Files (x86)\Inno Setup 6\ISCC.exe" "dist\installer.iss"
+
+if %ERRORLEVEL% NEQ 0 (
+    echo Installer build failed!
+    exit /b %ERRORLEVEL%
+)
+
+echo Done! Installer is in dist\dist\
+pause

include/callbacks.h

@@ -1,20 +0,0 @@
-#ifndef CALLBACKS_H
-#define CALLBACKS_H
-
-#include <iup.h>
-
-// 按钮回调
-int btn_new_cb(Ihandle* self);
-int btn_edit_cb(Ihandle* self);
-int btn_browse_cb(Ihandle* self);
-int btn_del_cb(Ihandle* self);
-int btn_up_cb(Ihandle* self);
-int btn_down_cb(Ihandle* self);
-int btn_ok_cb(Ihandle* self);
-int btn_cancel_cb(Ihandle* self);
-int btn_help_cb(Ihandle* self);
-
-// 双击回调
-int list_dblclick_cb(Ihandle* self, int item, char* text);
-
-#endif // CALLBACKS_H

include/cb_edit.h

@@ -0,0 +1,15 @@
+#ifndef CB_EDIT_H
+#define CB_EDIT_H
+
+#include <iup.h>
+
+// 编辑相关回调
+int btn_new_cb(Ihandle *self);
+int btn_edit_cb(Ihandle *self);
+int list_dblclick_cb(Ihandle *self, int item, char *text);
+int btn_del_cb(Ihandle *self);
+int btn_up_cb(Ihandle *self);
+int btn_down_cb(Ihandle *self);
+int btn_clean_cb(Ihandle *self);
+
+#endif // CB_EDIT_H

include/cb_file.h

@@ -0,0 +1,14 @@
+#ifndef CB_FILE_H
+#define CB_FILE_H
+
+#include <iup.h>
+
+// 文件和历史记录回调
+int btn_browse_cb(Ihandle *self);
+int btn_undo_cb(Ihandle *self);
+int btn_redo_cb(Ihandle *self);
+int btn_export_cb(Ihandle *self);
+int btn_import_cb(Ihandle *self);
+int list_dropfiles_cb(Ihandle *self, const char *filename, int num, int x, int y);
+
+#endif // CB_FILE_H

include/cb_main.h

@@ -0,0 +1,17 @@
+#ifndef CB_MAIN_H
+#define CB_MAIN_H
+
+#include <iup.h>
+
+// 主界面交互回调
+int txt_search_cb(Ihandle *self);
+int list_k_any_cb(Ihandle *self, int c);
+int list_motion_cb(Ihandle *self, int x, int y, char *status);
+int dialog_k_any_cb(Ihandle *self, int c);
+int btn_ok_cb(Ihandle *self);
+int btn_cancel_cb(Ihandle *self);
+int btn_help_cb(Ihandle *self);
+int tabs_tabchange_cb(Ihandle *self, int new_pos, int old_pos);
+int btn_theme_cb(Ihandle *self);
+
+#endif // CB_MAIN_H

include/config.h

@@ -0,0 +1,23 @@
+#ifndef CONFIG_H
+#define CONFIG_H
+
+// UI 常量定义
+#define UI_WINDOW_TITLE "Path Editor"  // 窗口标题
+#define UI_WINDOW_SIZE "800x800"       // 窗口默认大小 (像素)
+
+// 按钮尺寸
+#define UI_BUTTON_SIZE "100x32"        // 按钮默认大小 (像素)
+#define UI_BUTTON_SMALL_SIZE "80x32"   // 小按钮大小 (像素)
+
+// 布局间距
+#define UI_MARGIN_MAIN "10x10"         // 主布局外边距 (像素)
+#define UI_GAP_MAIN "10"               // 主布局间距 (像素)
+#define UI_GAP_BUTTONS "5"             // 按钮间距 (像素)
+#define UI_GAP_BOTTOM "10"             // 底部间距 (像素)
+
+// 列表属性
+#define UI_LIST_ITEM_PADDING "5x5"          // 列表项内边距 (像素)
+#define UI_LIST_BGCOLOR "255 255 255"       // 列表背景颜色 (RGB)
+#define UI_LIST_MERGED_BGCOLOR "240 240 240"// 合并列表背景颜色 (RGB)
+
+#endif // CONFIG_H

include/globals.h

@@ -4,21 +4,73 @@
 #include <iup.h>
 
 // 注册表路径常量
-#define REG_PATH L"SYSTEM\\CurrentControlSet\\Control\\Session Manager\\Environment"
+#define REG_PATH_SYS L"SYSTEM\\CurrentControlSet\\Control\\Session Manager\\Environment"
+#define REG_PATH_USER L"Environment"
 #define REG_VALUE L"Path"
 
 // 全局控件句柄声明
-extern Ihandle *dlg;        // 主对话框句柄
-extern Ihandle *list_path;  // 路径列表控件句柄
-extern Ihandle *lbl_status; // 状态标签句柄
-extern Ihandle *btn_new;    // 新增按钮句柄
-extern Ihandle *btn_edit;   // 编辑按钮句柄
-extern Ihandle *btn_browse; // 浏览按钮句柄
-extern Ihandle *btn_del;    // 删除按钮句柄
-extern Ihandle *btn_up;     // 上移按钮句柄
-extern Ihandle *btn_down;   // 下移按钮句柄
-extern Ihandle *btn_ok;     // 确认按钮句柄
-extern Ihandle *btn_cancel; // 取消按钮句柄
-extern Ihandle *btn_help;   // 帮助按钮句柄
+extern Ihandle *dlg;            // 主对话框句柄
+extern Ihandle *tabs_main;      // 标签页容器
+extern Ihandle *list_sys;       // 系统变量列表
+extern Ihandle *list_user;      // 用户变量列表
+extern Ihandle *list_merged;    // 合并变量列表
+extern Ihandle *lbl_status;     // 状态标签句柄
+extern Ihandle *btn_new;        // 新增按钮句柄
+extern Ihandle *btn_edit;       // 编辑按钮句柄
+extern Ihandle *btn_browse;     // 浏览按钮句柄
+extern Ihandle *btn_del;        // 删除按钮句柄
+extern Ihandle *btn_up;         // 上移按钮句柄
+extern Ihandle *btn_down;       // 下移按钮句柄
+extern Ihandle *btn_clean;      // 一键清理按钮句柄
+extern Ihandle *btn_undo;       // 撤销按钮句柄
+extern Ihandle *btn_redo;       // 重做按钮句柄
+extern Ihandle *btn_import;     // 导入按钮句柄
+extern Ihandle *btn_export;     // 导出按钮句柄
+extern Ihandle *btn_theme;      // 主题切换按钮句柄
+extern Ihandle *btn_ok;         // 确认按钮句柄
+extern int is_dark_mode;        // 深色模式状态
+extern Ihandle *btn_cancel;     // 取消按钮句柄
+extern Ihandle *btn_help;       // 帮助按钮句柄
+extern Ihandle *txt_search;     // 搜索框
+
+// 简单字符串列表结构，用于搜索缓存
+typedef struct {
+    char **items;
+    int count;
+    int capacity;
+} StringList;
+
+extern StringList raw_sys_paths;
+extern StringList raw_user_paths;
+
+// 历史记录节点
+typedef struct HistoryNode {
+    StringList sys_paths;
+    StringList user_paths;
+    struct HistoryNode *next;
+} HistoryNode;
+
+// 历史记录栈
+typedef struct {
+    HistoryNode *top;
+    int count;
+} HistoryStack;
+
+extern HistoryStack undo_stack;
+extern HistoryStack redo_stack;
+extern Ihandle *btn_undo;
+extern Ihandle *btn_redo;
+
+// 缓存操作函数声明
+void init_string_list(StringList *list);
+void add_string_list(StringList *list, const char *str);
+void clear_string_list(StringList *list);
+void copy_string_list(StringList *dest, StringList *src);
+
+// 历史记录操作
+void init_history_stack(HistoryStack *stack);
+void push_history(HistoryStack *stack, StringList *sys, StringList *user);
+int pop_history(HistoryStack *stack, StringList *out_sys, StringList *out_user);
+void clear_history_stack(HistoryStack *stack);
 
 #endif // GLOBALS_H

include/registry.h

@@ -1,10 +1,10 @@
 #ifndef REGISTRY_H
 #define REGISTRY_H
 
-// 从注册表加载PATH到列表控件
-void load_path();
+// 从注册表加载所有PATH到列表控件
+void load_all_paths();
 
 // 将列表控件中的PATH保存回注册表
-void save_path();
+void save_all_paths();
 
 #endif // REGISTRY_H

include/ui.h

@@ -0,0 +1,17 @@
+#ifndef UI_H
+#define UI_H
+
+#include <iup.h>
+
+// 创建列表控件
+Ihandle *create_path_list();
+
+// 创建右侧功能按钮区域
+Ihandle *create_main_buttons();
+
+// 创建底部按钮区域
+Ihandle *create_bottom_buttons();
+
+Ihandle *create_main_dialog();
+
+#endif // UI_H

include/ui_utils.h

@@ -0,0 +1,18 @@
+#ifndef UI_UTILS_H
+#define UI_UTILS_H
+
+#include <iup.h>
+#include "globals.h"
+
+// 辅助函数声明
+int get_first_selected_index(Ihandle *list);
+void set_single_selection(Ihandle *list, int index);
+void refresh_ui_from_raw(Ihandle *list, StringList *raw);
+void record_history();
+int custom_input_dialog(const char *title, const char *label_text, char *buffer, int buffer_size);
+Ihandle *get_current_list();
+void remove_from_raw_data(StringList *list, const char *str);
+void toggle_edit_buttons(int enable);
+void apply_theme();
+
+#endif // UI_UTILS_H

include/utils.h

@@ -3,6 +3,7 @@
 
 #include <windows.h>
 #include <wchar.h>
+#include <iup.h>
 
 // 宽字符转UTF-8
 char* wide_to_utf8(const wchar_t* wstr);
@@ -13,7 +14,20 @@ wchar_t* utf8_to_wide(const char* str);
 // 检查管理员权限
 int check_admin();
 
+// 展开环境变量
+char* expand_env_vars(const char* path);
+
+// 检查路径是否有效（存在且为目录）
+int is_path_valid(const char *path);
+
 // 刷新列表样式（斑马纹）
 void refresh_list_style();
+void refresh_single_list_style(Ihandle *list);
+
+// 备份注册表
+void backup_registry();
+
+// 不区分大小写的字符串查找
+char *stristr(const char *haystack, const char *needle);
 
 #endif // UTILS_H

src/callbacks.c

@@ -1,327 +0,0 @@
-#include "callbacks.h"
-#include "globals.h"
-#include "registry.h"
-#include "utils.h"
-#include <string.h>
-#include <stdio.h>
-
-// 简单的自定义输入对话框，支持更宽的输入框
-// 返回 1 表示确定，0 表示取消
-int show_custom_input_dialog(const char *title, const char *label_text, char *buffer, int buffer_size)
-{
-    Ihandle *text = IupText(NULL);
-    IupSetAttribute(text, "VALUE", buffer);
-    IupSetAttribute(text, "EXPAND", "HORIZONTAL");
-    IupSetAttribute(text, "RASTERSIZE", "600x");   // 设置宽度为600像素
-    IupSetAttribute(text, "VISIBLECOLUMNS", "80"); // 设置可见列数
-
-    // 如果是编辑模式，全选文本
-    if (strlen(buffer) > 0)
-    {
-        IupSetAttribute(text, "SELECTION", "ALL");
-    }
-
-    Ihandle *dlg = IupDialog(
-        IupVbox(
-            IupLabel(label_text),
-            text,
-            IupHbox(
-                IupFill(),
-                IupButton("确定", "1"), // "1" will be returned by IupPopup
-                IupButton("取消", "0"), // "0" will be returned by IupPopup
-                NULL),
-            NULL));
-
-    // 布局设置
-    IupSetAttribute(dlg, "TITLE", title);
-    IupSetAttribute(dlg, "MINBOX", "NO");
-    IupSetAttribute(dlg, "MAXBOX", "NO");
-    IupSetAttribute(dlg, "RESIZE", "NO");
-    IupSetAttribute(dlg, "MARGIN", "10x10");
-    IupSetAttribute(dlg, "GAP", "10");
-
-    // 按钮响应
-    // 这是一个简单的 hack：IupPopup 的参数 x, y 如果是 IUP_CENTER 等，它是一个模态循环。
-    // 但是标准的 IupPopup 不返回按钮值。
-    // 我们使用 IupAlarm 类似的逻辑，或者使用 IUP 提供的 IupGetParam。
-    // 为了最简单实现，我们使用 IUP 的 IupGetParam，但是它很难调整宽度。
-    // 所以还是手动构建对话框。
-
-    // 为了获取返回值，我们需要设置按钮回调。
-    // 但为了避免定义额外的全局函数，我们可以使用 IupPopup 阻塞特性。
-    // 我们需要定义两个简单的回调函数。
-    // 为了简化，这里定义两个静态辅助函数。
-
-    // 由于 C 语言闭包限制，我们需要用全局或静态变量传递状态，或者使用 Dialog 的 Attribute。
-    IupSetAttribute(dlg, "MY_STATUS", "0");
-
-    // 注册回调 (使用 IupSetCallback 注册 lambda 类似的逻辑比较难，这里用名字)
-    // 必须定义全局函数。为了避免污染，我们在文件顶部定义静态函数。
-    // 见下文的 static int on_dialog_ok...
-
-    // 由于不能在函数内部定义函数，我们需要调整代码结构。
-    // 见下文重构。
-
-    return 0; // 占位
-}
-
-// 静态辅助函数：对话框确定
-static int on_dialog_ok(Ihandle *self)
-{
-    Ihandle *dlg = IupGetDialog(self);
-    IupSetAttribute(dlg, "MY_STATUS", "1");
-    return IUP_CLOSE;
-}
-
-// 静态辅助函数：对话框取消
-static int on_dialog_cancel(Ihandle *self)
-{
-    Ihandle *dlg = IupGetDialog(self);
-    IupSetAttribute(dlg, "MY_STATUS", "0");
-    return IUP_CLOSE;
-}
-
-// 真正的实现函数
-int custom_input_dialog(const char *title, const char *label_text, char *buffer, int buffer_size)
-{
-    Ihandle *text = IupText(NULL);
-    IupSetAttribute(text, "VALUE", buffer);
-    IupSetAttribute(text, "EXPAND", "HORIZONTAL");
-    IupSetAttribute(text, "RASTERSIZE", "500x");
-    IupSetAttribute(text, "NAME", "INPUT_TEXT");
-
-    Ihandle *btn_ok = IupButton("确定", NULL);
-    IupSetCallback(btn_ok, "ACTION", on_dialog_ok);
-    IupSetAttribute(btn_ok, "RASTERSIZE", "100x32");
-
-    Ihandle *btn_cancel = IupButton("取消", NULL);
-    IupSetCallback(btn_cancel, "ACTION", on_dialog_cancel);
-    IupSetAttribute(btn_cancel, "RASTERSIZE", "100x32");
-
-    Ihandle *vbox = IupVbox(
-        IupLabel(label_text),
-        text,
-        IupHbox(IupFill(), btn_ok, btn_cancel, NULL),
-        NULL);
-    IupSetAttribute(vbox, "MARGIN", "15x15");
-    IupSetAttribute(vbox, "GAP", "10");
-
-    Ihandle *dlg = IupDialog(vbox);
-    IupSetAttribute(dlg, "TITLE", title);
-    IupSetAttribute(dlg, "MINBOX", "NO");
-    IupSetAttribute(dlg, "MAXBOX", "NO");
-    IupSetAttribute(dlg, "RESIZE", "NO");
-
-    IupSetAttributeHandle(dlg, "DEFAULTENTER", btn_ok);
-    IupSetAttributeHandle(dlg, "DEFAULTESC", btn_cancel);
-
-    IupPopup(dlg, IUP_CENTER, IUP_CENTER);
-
-    int result = IupGetInt(dlg, "MY_STATUS");
-    if (result == 1)
-    {
-        char *val = IupGetAttribute(text, "VALUE");
-        if (val)
-        {
-            strncpy(buffer, val, buffer_size);
-            buffer[buffer_size - 1] = '\0';
-        }
-    }
-
-    IupDestroy(dlg);
-    return result;
-}
-
-// 按钮回调：新建
-int btn_new_cb(Ihandle *self)
-{
-    char buffer[1024] = "";
-    if (custom_input_dialog("新建环境变量", "请输入路径:", buffer, sizeof(buffer)))
-    {
-        if (strlen(buffer) > 0)
-        {
-            int count = IupGetInt(list_path, "COUNT");
-            count++;
-            IupSetAttributeId(list_path, "", count, buffer);
-            IupSetInt(list_path, "COUNT", count);
-            IupSetInt(list_path, "VALUE", count);
-
-            refresh_list_style();
-        }
-    }
-    return IUP_DEFAULT;
-}
-
-// 按钮回调：编辑
-int btn_edit_cb(Ihandle *self)
-{
-    int selected = IupGetInt(list_path, "VALUE");
-    if (selected == 0)
-        return IUP_DEFAULT;
-
-    char *current_val = IupGetAttributeId(list_path, "", selected);
-    char buffer[4096]; // 假设单个路径不超过4096
-    if (current_val)
-    {
-        strncpy(buffer, current_val, 4096);
-        buffer[4095] = '\0';
-    }
-    else
-    {
-        buffer[0] = '\0';
-    }
-
-    if (custom_input_dialog("编辑环境变量", "编辑路径:", buffer, sizeof(buffer)))
-    {
-        if (strlen(buffer) > 0)
-        {
-            IupSetAttributeId(list_path, "", selected, buffer);
-            refresh_list_style();
-        }
-    }
-    return IUP_DEFAULT;
-}
-
-// 双击回调
-int list_dblclick_cb(Ihandle *self, int item, char *text)
-{
-    // 这里的 item 是点击的行号
-    if (item > 0)
-    {
-        // 选中该行
-        IupSetInt(list_path, "VALUE", item);
-        // 调用编辑逻辑
-        btn_edit_cb(NULL);
-    }
-    return IUP_DEFAULT;
-}
-
-// 按钮回调：浏览
-int btn_browse_cb(Ihandle *self)
-{
-    Ihandle *filedlg = IupFileDlg();
-    IupSetAttribute(filedlg, "DIALOGTYPE", "DIR");
-    IupSetAttribute(filedlg, "TITLE", "选择目录");
-
-    IupPopup(filedlg, IUP_CENTER, IUP_CENTER);
-
-    if (IupGetInt(filedlg, "STATUS") != -1)
-    {
-        char *value = IupGetAttribute(filedlg, "VALUE");
-        if (value)
-        {
-            int count = IupGetInt(list_path, "COUNT");
-            count++;
-            IupSetAttributeId(list_path, "", count, value);
-            IupSetInt(list_path, "COUNT", count);
-            IupSetInt(list_path, "VALUE", count);
-
-            refresh_list_style();
-        }
-    }
-    IupDestroy(filedlg);
-    return IUP_DEFAULT;
-}
-
-// 按钮回调：删除
-int btn_del_cb(Ihandle *self)
-{
-    int selected = IupGetInt(list_path, "VALUE");
-    if (selected == 0)
-        return IUP_DEFAULT;
-
-    IupSetAttribute(list_path, "REMOVEITEM", "SELECTED");
-
-    // 重新刷新，因为删除了中间项，后面的奇偶性变了
-    refresh_list_style();
-    return IUP_DEFAULT;
-}
-
-// 按钮回调：上移
-int btn_up_cb(Ihandle *self)
-{
-    int selected = IupGetInt(list_path, "VALUE");
-    if (selected <= 1)
-        return IUP_DEFAULT; // 已经是第一个或未选中
-
-    char *current = IupGetAttributeId(list_path, "", selected);
-    char *prev = IupGetAttributeId(list_path, "", selected - 1);
-
-    // 交换内容
-    char buf_curr[4096], buf_prev[4096];
-    strncpy(buf_curr, current, 4096);
-    buf_curr[4095] = '\0';
-    strncpy(buf_prev, prev, 4096);
-    buf_prev[4095] = '\0';
-
-    IupSetAttributeId(list_path, "", selected, buf_prev);
-    IupSetAttributeId(list_path, "", selected - 1, buf_curr);
-
-    IupSetInt(list_path, "VALUE", selected - 1);
-
-    // 刷新样式（虽然颜色不需要变，但为了保险）
-    refresh_list_style();
-    return IUP_DEFAULT;
-}
-
-// 按钮回调：下移
-int btn_down_cb(Ihandle *self)
-{
-    int selected = IupGetInt(list_path, "VALUE");
-    int count = IupGetInt(list_path, "COUNT");
-    if (selected == 0 || selected >= count)
-        return IUP_DEFAULT;
-
-    char *current = IupGetAttributeId(list_path, "", selected);
-    char *next = IupGetAttributeId(list_path, "", selected + 1);
-
-    char buf_curr[4096], buf_next[4096];
-    strncpy(buf_curr, current, 4096);
-    buf_curr[4095] = '\0';
-    strncpy(buf_next, next, 4096);
-    buf_next[4095] = '\0';
-
-    IupSetAttributeId(list_path, "", selected, buf_next);
-    IupSetAttributeId(list_path, "", selected + 1, buf_curr);
-
-    IupSetInt(list_path, "VALUE", selected + 1);
-
-    refresh_list_style();
-    return IUP_DEFAULT;
-}
-
-// 按钮回调：确定
-int btn_ok_cb(Ihandle *self)
-{
-    save_path();
-    return IUP_DEFAULT;
-}
-
-// 按钮回调：取消
-int btn_cancel_cb(Ihandle *self)
-{
-    IupExitLoop();
-    return IUP_DEFAULT;
-}
-
-// 按钮回调：帮助
-int btn_help_cb(Ihandle *self)
-{
-    IupMessage("使用说明",
-               "1. 本程序用于编辑系统环境变量 PATH。\n"
-               "2. 必须以【管理员身份】运行才能保存更改。\n"
-               "3. 操作说明：\n"
-               "   - 新建：添加新路径到列表末尾。\n"
-               "   - 编辑：修改选中的路径。\n"
-               "   - 浏览：从文件系统选择目录添加。\n"
-               "   - 删除：移除选中的路径。\n"
-               "   - 上移/下移：调整路径优先级。\n"
-               "4. 点击【确定】保存更改并生效。\n"
-               "5. 注意：某些正在运行的程序可能需要重启才能识别新的环境变量。\n\n"
-               "--------------------------------------------------\n"
-               "作者：LHY\n"
-               "邮箱：3364451258@qq.com\n"
-               "GitHub：https://github.com/LHY0125/PathEditor\n"
-               "记得给我的项目点个star！");
-    return IUP_DEFAULT;
-}

src/cb_edit.c

@@ -0,0 +1,368 @@
+#include "cb_edit.h"
+#include "ui_utils.h"
+#include "globals.h"
+#include "utils.h"
+#include <string.h>
+#include <stdlib.h>
+
+// 按钮回调：新建
+int btn_new_cb(Ihandle *self)
+{
+    char buffer[1024] = "";
+    if (custom_input_dialog("新建环境变量", "请输入路径:", buffer, sizeof(buffer)))
+    {
+        if (strlen(buffer) > 0)
+        {
+            // 记录历史
+            record_history();
+
+            Ihandle *current_list = get_current_list();
+            int count = IupGetInt(current_list, "COUNT");
+            count++;
+            IupSetAttributeId(current_list, "", count, buffer);
+            IupSetInt(current_list, "COUNT", count);
+            
+            // 更新选中状态
+            set_single_selection(current_list, count);
+
+            // 同时添加到 raw_data
+            int pos = IupGetInt(tabs_main, "VALUEPOS");
+            StringList *raw_data = (pos == 0) ? &raw_sys_paths : &raw_user_paths;
+            if (raw_data) {
+                add_string_list(raw_data, buffer);
+            }
+
+            refresh_single_list_style(current_list);
+        }
+    }
+    return IUP_DEFAULT;
+}
+
+// 按钮回调：编辑
+int btn_edit_cb(Ihandle *self)
+{
+    Ihandle *current_list = get_current_list();
+    // 获取第一个选中的项
+    int selected = get_first_selected_index(current_list);
+    if (selected == 0)
+        return IUP_DEFAULT;
+
+    char *current_val = IupGetAttributeId(current_list, "", selected);
+    char buffer[4096]; // 假设单个路径不超过4096
+    if (current_val)
+    {
+        strncpy(buffer, current_val, 4096);
+        buffer[4095] = '\0';
+    }
+    else
+    {
+        buffer[0] = '\0';
+    }
+
+    if (custom_input_dialog("编辑环境变量", "编辑路径:", buffer, sizeof(buffer)))
+    {
+        if (strlen(buffer) > 0)
+        {
+            // 记录历史
+            record_history();
+
+            // 更新 UI
+            IupSetAttributeId(current_list, "", selected, buffer);
+            
+            // 更新 raw_data
+            int pos = IupGetInt(tabs_main, "VALUEPOS");
+            StringList *raw_data = (pos == 0) ? &raw_sys_paths : &raw_user_paths;
+            
+            char *filter = IupGetAttribute(txt_search, "VALUE");
+            if (!filter || strlen(filter) == 0) {
+                 if (raw_data && selected <= raw_data->count) {
+                     free(raw_data->items[selected-1]);
+                     raw_data->items[selected-1] = _strdup(buffer);
+                 }
+            } else {
+                // 搜索状态下，忽略同步问题，或者编辑后清除搜索。
+            }
+
+            refresh_single_list_style(current_list);
+        }
+    }
+    return IUP_DEFAULT;
+}
+
+// 双击回调
+int list_dblclick_cb(Ihandle *self, int item, char *text)
+{
+    // 这里的 self 就是触发双击的列表控件
+    if (item > 0)
+    {
+        // 选中该行 (单选)
+        set_single_selection(self, item);
+        // 调用编辑逻辑
+        btn_edit_cb(NULL);
+    }
+    return IUP_DEFAULT;
+}
+
+// 按钮回调：删除 (支持多选)
+int btn_del_cb(Ihandle *self)
+{
+    Ihandle *current_list = get_current_list();
+    char *value = IupGetAttribute(current_list, "VALUE");
+    if (!value)
+        return IUP_DEFAULT;
+
+    int len = strlen(value);
+    int has_selection = 0;
+    for (int i = 0; i < len; i++) {
+        if (value[i] == '+') {
+            has_selection = 1;
+            break;
+        }
+    }
+
+    if (!has_selection)
+    {
+        IupMessage("提示", "请先选择要删除的项");
+        return IUP_DEFAULT;
+    }
+
+    // 记录历史
+    record_history();
+
+    // 获取 raw_data 缓存
+    int pos = IupGetInt(tabs_main, "VALUEPOS");
+    StringList *raw_data = (pos == 0) ? &raw_sys_paths : &raw_user_paths;
+
+    // 从后往前遍历删除，避免索引错位
+    for (int i = len - 1; i >= 0; i--)
+    {
+        if (value[i] == '+')
+        {
+            int item_index = i + 1; // IUP 索引从 1 开始
+            char *val = IupGetAttributeId(current_list, "", item_index);
+            
+            // 从缓存删除
+            if (val && raw_data)
+            {
+                char *val_copy = _strdup(val);
+                remove_from_raw_data(raw_data, val_copy);
+                free(val_copy);
+            }
+
+            // 从界面删除
+            IupSetInt(current_list, "REMOVEITEM", item_index);
+        }
+    }
+
+    // 重新刷新
+    refresh_single_list_style(current_list);
+
+    // 更新状态栏
+    IupSetAttribute(lbl_status, "TITLE", "状态: 已删除选中项");
+
+    return IUP_DEFAULT;
+}
+
+// 按钮回调：上移 (支持多选)
+int btn_up_cb(Ihandle *self)
+{
+    Ihandle *current_list = get_current_list();
+    char *value = IupGetAttribute(current_list, "VALUE");
+    if (!value)
+        return IUP_DEFAULT;
+
+    int len = strlen(value);
+    char *new_value = _strdup(value);
+    int moved = 0;
+
+    // 预检查是否有移动
+    for (int i = 1; i < len; i++) {
+        if (new_value[i] == '+' && new_value[i - 1] == '-') {
+            moved = 1;
+            break;
+        }
+    }
+
+    if (moved) {
+        // 记录历史
+        record_history();
+        
+        // 同步 raw_data (假设非搜索状态，raw_data 与 UI 一致)
+        int pos = IupGetInt(tabs_main, "VALUEPOS");
+        StringList *raw_data = (pos == 0) ? &raw_sys_paths : &raw_user_paths;
+
+        // 从前往后遍历，如果当前项被选中且前一项未选中，则交换
+        for (int i = 1; i < len; i++)
+        {
+            if (new_value[i] == '+' && new_value[i - 1] == '-')
+            {
+                // 交换列表项内容
+                char *curr_text = IupGetAttributeId(current_list, "", i + 1);
+                char *prev_text = IupGetAttributeId(current_list, "", i);
+                
+                // 需要复制，防止指针失效
+                char *curr_copy = curr_text ? _strdup(curr_text) : NULL;
+                char *prev_copy = prev_text ? _strdup(prev_text) : NULL;
+                
+                IupSetAttributeId(current_list, "", i, curr_copy);
+                IupSetAttributeId(current_list, "", i + 1, prev_copy);
+                
+                if (curr_copy) free(curr_copy);
+                if (prev_copy) free(prev_copy);
+
+                // 交换 raw_data
+                if (raw_data && i < raw_data->count) {
+                    char *temp = raw_data->items[i];
+                    raw_data->items[i] = raw_data->items[i-1];
+                    raw_data->items[i-1] = temp;
+                }
+
+                // 交换选中状态
+                new_value[i] = '-';
+                new_value[i - 1] = '+';
+            }
+        }
+
+        // 更新选中状态
+        IupSetAttribute(current_list, "VALUE", new_value);
+        refresh_single_list_style(current_list);
+    }
+    free(new_value);
+    return IUP_DEFAULT;
+}
+
+// 按钮回调：下移 (支持多选)
+int btn_down_cb(Ihandle *self)
+{
+    Ihandle *current_list = get_current_list();
+    char *value = IupGetAttribute(current_list, "VALUE");
+    if (!value)
+        return IUP_DEFAULT;
+
+    int len = strlen(value);
+    char *new_value = _strdup(value);
+    int moved = 0;
+
+    // 预检查
+    for (int i = len - 2; i >= 0; i--) {
+        if (new_value[i] == '+' && new_value[i + 1] == '-') {
+            moved = 1;
+            break;
+        }
+    }
+
+    if (moved) {
+        // 记录历史
+        record_history();
+
+        // 同步 raw_data
+        int pos = IupGetInt(tabs_main, "VALUEPOS");
+        StringList *raw_data = (pos == 0) ? &raw_sys_paths : &raw_user_paths;
+
+        // 从后往前遍历，如果当前项被选中且后一项未选中，则交换
+        for (int i = len - 2; i >= 0; i--)
+        {
+            if (new_value[i] == '+' && new_value[i + 1] == '-')
+            {
+                // 交换列表项内容
+                char *curr_text = IupGetAttributeId(current_list, "", i + 1);
+                char *next_text = IupGetAttributeId(current_list, "", i + 2);
+
+                // 需要复制
+                char *curr_copy = curr_text ? _strdup(curr_text) : NULL;
+                char *next_copy = next_text ? _strdup(next_text) : NULL;
+
+                IupSetAttributeId(current_list, "", i + 2, curr_copy);
+                IupSetAttributeId(current_list, "", i + 1, next_copy);
+
+                if (curr_copy) free(curr_copy);
+                if (next_copy) free(next_copy);
+
+                // 交换 raw_data
+                if (raw_data && i + 1 < raw_data->count) {
+                    char *temp = raw_data->items[i];
+                    raw_data->items[i] = raw_data->items[i+1];
+                    raw_data->items[i+1] = temp;
+                }
+
+                // 交换选中状态
+                new_value[i] = '-';
+                new_value[i + 1] = '+';
+            }
+        }
+
+        // 更新选中状态
+        IupSetAttribute(current_list, "VALUE", new_value);
+        refresh_single_list_style(current_list);
+    }
+    free(new_value);
+    return IUP_DEFAULT;
+}
+
+// 按钮回调：一键清理
+int btn_clean_cb(Ihandle *self)
+{
+    Ihandle *current_list = get_current_list();
+    int count = IupGetInt(current_list, "COUNT");
+    if (count == 0)
+        return IUP_DEFAULT;
+
+    // 弹出确认对话框
+    if (IupAlarm("确认清理", "此操作将移除当前列表中所有【无效路径】和【重复路径】。\n确定要继续吗？", "确定", "取消", NULL) != 1)
+    {
+        return IUP_DEFAULT;
+    }
+
+    // 记录历史 (放在循环外，一次操作)
+    record_history();
+    
+    // 获取 raw_data 用于同步删除
+    int pos = IupGetInt(tabs_main, "VALUEPOS");
+    StringList *raw_data = (pos == 0) ? &raw_sys_paths : &raw_user_paths;
+
+    // 从后往前遍历删除，避免索引错位
+    for (int i = count; i >= 1; i--)
+    {
+        char *item = IupGetAttributeId(current_list, "", i);
+        if (!item)
+            continue;
+
+        int should_remove = 0;
+
+        // 1. 检查有效性
+        if (!is_path_valid(item))
+        {
+            should_remove = 1;
+        }
+        else
+        {
+            // 2. 检查重复 (检查当前项之前是否出现过)
+            // 注意：这里需要再次遍历，性能稍低但最稳妥
+            for (int j = 1; j < i; j++)
+            {
+                char *prev_item = IupGetAttributeId(current_list, "", j);
+                if (prev_item && _stricmp(item, prev_item) == 0)
+                {
+                    should_remove = 1;
+                    break;
+                }
+            }
+        }
+
+        if (should_remove)
+        {
+            // 从 raw_data 删除
+            if (raw_data) {
+                char *val_copy = _strdup(item);
+                remove_from_raw_data(raw_data, val_copy);
+                free(val_copy);
+            }
+            
+            IupSetAttributeId(current_list, "REMOVEITEM", i, NULL);
+        }
+    }
+
+    refresh_single_list_style(current_list);
+    IupMessage("提示", "清理完成！");
+    return IUP_DEFAULT;
+}

src/cb_file.c

@@ -0,0 +1,260 @@
+#include "cb_file.h"
+#include "ui_utils.h"
+#include "globals.h"
+#include "utils.h"
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <windows.h> // for GetFileAttributesA
+
+// 按钮回调：浏览
+int btn_browse_cb(Ihandle *self)
+{
+    Ihandle *filedlg = IupFileDlg();
+    IupSetAttribute(filedlg, "DIALOGTYPE", "DIR");
+    IupSetAttribute(filedlg, "TITLE", "选择目录");
+
+    IupPopup(filedlg, IUP_CENTER, IUP_CENTER);
+
+    if (IupGetInt(filedlg, "STATUS") != -1)
+    {
+        char *value = IupGetAttribute(filedlg, "VALUE");
+        if (value)
+        {
+            // 记录历史
+            record_history();
+
+            Ihandle *current_list = get_current_list();
+            int count = IupGetInt(current_list, "COUNT");
+            count++;
+            IupSetAttributeId(current_list, "", count, value);
+            IupSetInt(current_list, "COUNT", count);
+            
+            // 更新选中状态
+            set_single_selection(current_list, count);
+
+            // 同步 raw_data
+            int pos = IupGetInt(tabs_main, "VALUEPOS");
+            StringList *raw_data = (pos == 0) ? &raw_sys_paths : &raw_user_paths;
+            if (raw_data) {
+                add_string_list(raw_data, value);
+            }
+
+            refresh_single_list_style(current_list);
+        }
+    }
+    IupDestroy(filedlg);
+    return IUP_DEFAULT;
+}
+
+// 撤销回调
+int btn_undo_cb(Ihandle *self)
+{
+    StringList sys = {0}, user = {0};
+    if (pop_history(&undo_stack, &sys, &user)) {
+        // Push current state to redo
+        push_history(&redo_stack, &raw_sys_paths, &raw_user_paths);
+        
+        // Restore
+        clear_string_list(&raw_sys_paths);
+        clear_string_list(&raw_user_paths);
+        raw_sys_paths = sys;
+        raw_user_paths = user;
+        
+        // Refresh UI
+        refresh_ui_from_raw(list_sys, &raw_sys_paths);
+        refresh_ui_from_raw(list_user, &raw_user_paths);
+        
+        IupSetAttribute(lbl_status, "TITLE", "状态: 已撤销");
+    } else {
+        IupSetAttribute(lbl_status, "TITLE", "状态: 没有可撤销的操作");
+    }
+    return IUP_DEFAULT;
+}
+
+// 重做回调
+int btn_redo_cb(Ihandle *self)
+{
+    StringList sys = {0}, user = {0};
+    if (pop_history(&redo_stack, &sys, &user)) {
+        // Push current state to undo
+        push_history(&undo_stack, &raw_sys_paths, &raw_user_paths);
+        
+        // Restore
+        clear_string_list(&raw_sys_paths);
+        clear_string_list(&raw_user_paths);
+        raw_sys_paths = sys;
+        raw_user_paths = user;
+        
+        // Refresh UI
+        refresh_ui_from_raw(list_sys, &raw_sys_paths);
+        refresh_ui_from_raw(list_user, &raw_user_paths);
+        
+        IupSetAttribute(lbl_status, "TITLE", "状态: 已重做");
+    } else {
+        IupSetAttribute(lbl_status, "TITLE", "状态: 没有可重做的操作");
+    }
+    return IUP_DEFAULT;
+}
+
+// 导出配置
+int btn_export_cb(Ihandle *self)
+{
+    Ihandle *current_list = get_current_list();
+    int count = IupGetInt(current_list, "COUNT");
+    if (count == 0) {
+        IupMessage("提示", "当前列表为空，无法导出");
+        return IUP_DEFAULT;
+    }
+    
+    Ihandle *filedlg = IupFileDlg();
+    IupSetAttribute(filedlg, "DIALOGTYPE", "SAVE");
+    IupSetAttribute(filedlg, "TITLE", "导出配置");
+    IupSetAttribute(filedlg, "FILTER", "*.txt");
+    IupSetAttribute(filedlg, "FILTERINFO", "Text Files (*.txt)");
+    
+    IupPopup(filedlg, IUP_CENTER, IUP_CENTER);
+    
+    if (IupGetInt(filedlg, "STATUS") != -1) {
+        char *filename = IupGetAttribute(filedlg, "VALUE");
+        if (filename) {
+            char final_path[1024];
+            strncpy(final_path, filename, sizeof(final_path));
+            final_path[sizeof(final_path)-1] = '\0';
+            
+            // 检查是否以 .txt 结尾 (不区分大小写)
+            size_t len = strlen(final_path);
+            if (len < 4 || _stricmp(final_path + len - 4, ".txt") != 0) {
+                if (len + 4 < sizeof(final_path)) {
+                    strcat(final_path, ".txt");
+                }
+            }
+            
+            FILE *fp = fopen(final_path, "w");
+            if (fp) {
+                for (int i = 1; i <= count; i++) {
+                    char *item = IupGetAttributeId(current_list, "", i);
+                    if (item) fprintf(fp, "%s\n", item);
+                }
+                fclose(fp);
+                IupMessage("提示", "导出成功！");
+            } else {
+                IupMessage("错误", "无法打开文件进行写入");
+            }
+        }
+    }
+    IupDestroy(filedlg);
+    return IUP_DEFAULT;
+}
+
+// 导入配置
+int btn_import_cb(Ihandle *self)
+{
+    Ihandle *filedlg = IupFileDlg();
+    IupSetAttribute(filedlg, "DIALOGTYPE", "OPEN");
+    IupSetAttribute(filedlg, "TITLE", "导入配置");
+    IupSetAttribute(filedlg, "FILTER", "*.txt");
+    IupSetAttribute(filedlg, "FILTERINFO", "Text Files (*.txt)");
+    
+    IupPopup(filedlg, IUP_CENTER, IUP_CENTER);
+    
+    if (IupGetInt(filedlg, "STATUS") != -1) {
+        char *filename = IupGetAttribute(filedlg, "VALUE");
+        if (filename) {
+            FILE *fp = fopen(filename, "r");
+            if (fp) {
+                // Record history
+                record_history();
+                
+                Ihandle *current_list = get_current_list();
+                int pos = IupGetInt(tabs_main, "VALUEPOS");
+                StringList *raw_data = (pos == 0) ? &raw_sys_paths : &raw_user_paths;
+                
+                char line[4096];
+                int imported_count = 0;
+                while (fgets(line, sizeof(line), fp)) {
+                    // Trim newline
+                    size_t len = strlen(line);
+                    while (len > 0 && (line[len-1] == '\n' || line[len-1] == '\r')) {
+                        line[len-1] = '\0';
+                        len--;
+                    }
+                    if (len > 0) {
+                        // Add to UI
+                        int count = IupGetInt(current_list, "COUNT");
+                        count++;
+                        IupSetAttributeId(current_list, "", count, line);
+                        IupSetInt(current_list, "COUNT", count);
+                        
+                        // Add to raw_data
+                        if (raw_data) add_string_list(raw_data, line);
+                        
+                        imported_count++;
+                    }
+                }
+                fclose(fp);
+                
+                refresh_single_list_style(current_list);
+                
+                char msg[64];
+                snprintf(msg, sizeof(msg), "导入成功！共导入 %d 条路径。", imported_count);
+                IupMessage("提示", msg);
+            } else {
+                IupMessage("错误", "无法打开文件进行读取");
+            }
+        }
+    }
+    IupDestroy(filedlg);
+    return IUP_DEFAULT;
+}
+
+// 拖拽回调
+int list_dropfiles_cb(Ihandle *self, const char *filename, int num, int x, int y)
+{
+    // 获取当前列表和原始数据
+    // 注意：拖拽的目标列表可能是 list_sys 或 list_user，由 self 参数决定
+    // 但为了确保数据一致性，我们还是重新获取一下
+    Ihandle *current_list = self;
+    StringList *raw_data = NULL;
+    if (self == list_sys)
+        raw_data = &raw_sys_paths;
+    else if (self == list_user)
+        raw_data = &raw_user_paths;
+    else
+        return IUP_DEFAULT; // 异常情况
+
+    // 检查拖入的是否为目录
+    DWORD attr = GetFileAttributesA(filename);
+    if (attr != INVALID_FILE_ATTRIBUTES && (attr & FILE_ATTRIBUTE_DIRECTORY))
+    {
+        // 记录历史
+        record_history();
+
+        // 如果正在搜索，先清空搜索框
+        IupSetAttribute(txt_search, "VALUE", "");
+
+        // 添加到列表末尾
+        int count = IupGetInt(current_list, "COUNT");
+        count++;
+        IupSetAttributeId(current_list, "", count, filename);
+        IupSetInt(current_list, "COUNT", count);
+        
+        // 更新选中状态
+        set_single_selection(current_list, count);
+
+        // 同时添加到原始数据缓存，确保搜索时能搜到
+        if (raw_data)
+        {
+            add_string_list(raw_data, filename);
+        }
+
+        refresh_single_list_style(current_list);
+    }
+    else
+    {
+        // 如果拖入的不是文件夹，可以在状态栏提示
+        IupSetAttribute(lbl_status, "TITLE", "提示: 只能拖拽文件夹添加到 PATH");
+    }
+
+    return IUP_DEFAULT;
+}

src/cb_main.c

@@ -0,0 +1,214 @@
+#include "cb_main.h"
+#include "ui_utils.h"
+#include "globals.h"
+#include "registry.h"
+#include "utils.h"
+#include "cb_edit.h"
+#include "cb_file.h"
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+// 搜索回调
+int txt_search_cb(Ihandle *self)
+{
+    char *filter = IupGetAttribute(self, "VALUE");
+    if (!filter)
+        return IUP_DEFAULT;
+
+    // 获取当前选中的 Tab 索引
+    int pos = IupGetInt(tabs_main, "VALUEPOS");
+    Ihandle *current_list = (pos == 0) ? list_sys : list_user;
+    StringList *raw_data = (pos == 0) ? &raw_sys_paths : &raw_user_paths;
+
+    // 清空列表
+    IupSetAttribute(current_list, "REMOVEITEM", "ALL");
+
+    // 重新填充
+    int count = 0;
+    for (int i = 0; i < raw_data->count; i++)
+    {
+        // 如果 filter 为空，或包含 filter (不区分大小写)
+        if (strlen(filter) == 0 || stristr(raw_data->items[i], filter) != NULL)
+        {
+            count++;
+            IupSetAttributeId(current_list, "", count, raw_data->items[i]);
+        }
+    }
+
+    IupSetInt(current_list, "COUNT", count);
+    refresh_single_list_style(current_list);
+
+    return IUP_DEFAULT;
+}
+
+// 键盘按键回调
+int list_k_any_cb(Ihandle *self, int c)
+{
+    // 处理 Delete 键
+    if (c == K_DEL)
+    {
+        btn_del_cb(NULL);
+        return IUP_IGNORE; // 阻止默认处理
+    }
+    return IUP_DEFAULT;
+}
+
+// 鼠标移动回调
+int list_motion_cb(Ihandle *self, int x, int y, char *status)
+{
+    int pos = IupConvertXYToPos(self, x, y);
+    if (pos > 0)
+    {
+        char *item = IupGetAttributeId(self, "", pos);
+        if (item)
+        {
+            char *expanded = expand_env_vars(item);
+            if (expanded)
+            {
+                IupSetAttribute(self, "TIP", expanded);
+                free(expanded);
+            }
+            else
+            {
+                IupSetAttribute(self, "TIP", item);
+            }
+        }
+        else
+        {
+            IupSetAttribute(self, "TIP", NULL);
+        }
+    }
+    else
+    {
+        IupSetAttribute(self, "TIP", NULL);
+    }
+    return IUP_DEFAULT;
+}
+
+// 对话框全局按键回调
+int dialog_k_any_cb(Ihandle *self, int c)
+{
+    switch (c)
+    {
+    case K_cN: // Ctrl+N 新建
+        btn_new_cb(NULL);
+        return IUP_IGNORE;
+    case K_cS: // Ctrl+S 保存
+        btn_ok_cb(NULL);
+        return IUP_IGNORE;
+    case K_cF: // Ctrl+F 搜索
+        if (txt_search)
+        {
+            IupSetFocus(txt_search);
+        }
+        return IUP_IGNORE;
+    case K_cZ: // Ctrl+Z 撤销
+        btn_undo_cb(NULL);
+        return IUP_IGNORE;
+    case K_cY: // Ctrl+Y 重做
+        btn_redo_cb(NULL);
+        return IUP_IGNORE;
+    }
+    return IUP_DEFAULT;
+}
+
+// 按钮回调：确定
+int btn_ok_cb(Ihandle *self)
+{
+    save_all_paths();
+    return IUP_DEFAULT;
+}
+
+// 按钮回调：取消
+int btn_cancel_cb(Ihandle *self)
+{
+    IupExitLoop();
+    return IUP_DEFAULT;
+}
+
+// 按钮回调：帮助
+int btn_help_cb(Ihandle *self)
+{
+    IupMessage("使用说明",
+               "1. 本程序用于编辑系统环境变量 PATH。\n"
+               "2. 必须以【管理员身份】运行才能保存更改。\n"
+               "3. 操作说明：\n"
+               "   - 新建：添加新路径到列表末尾。\n"
+               "   - 编辑：修改选中的路径。\n"
+               "   - 浏览：从文件系统选择目录添加。\n"
+               "   - 删除：移除选中的路径。\n"
+               "   - 上移/下移：调整路径优先级。\n"
+               "   - 导入/导出：备份和恢复配置。\n"
+               "   - 快捷键：\n"
+               "     Ctrl+N: 新建路径\n"
+               "     Ctrl+S: 保存更改\n"
+               "     Ctrl+F: 聚焦搜索框\n"
+               "     Ctrl+Z: 撤销\n"
+               "     Ctrl+Y: 重做\n"
+               "4. 点击【确定】保存更改并生效。\n"
+               "5. 注意：某些正在运行的程序可能需要重启才能识别新的环境变量。\n\n"
+               "--------------------------------------------------\n"
+               "作者：LHY\n"
+               "邮箱：3364451258@qq.com\n"
+               "GitHub：https://github.com/LHY0125/PathEditor\n"
+               "记得给我的项目点个star！");
+    return IUP_DEFAULT;
+}
+
+// 标签页切换回调
+int tabs_tabchange_cb(Ihandle *self, int new_pos, int old_pos)
+{
+    if (new_pos == 2)
+    {
+        // 合并预览模式
+        IupSetAttribute(list_merged, "REMOVEITEM", "ALL");
+        int count = 0;
+
+        // 添加系统变量
+        for (int i = 0; i < raw_sys_paths.count; i++)
+        {
+            count++;
+            IupSetAttributeId(list_merged, "", count, raw_sys_paths.items[i]);
+        }
+
+        // 添加用户变量
+        for (int i = 0; i < raw_user_paths.count; i++)
+        {
+            count++;
+            IupSetAttributeId(list_merged, "", count, raw_user_paths.items[i]);
+        }
+
+        IupSetInt(list_merged, "COUNT", count);
+        refresh_single_list_style(list_merged);
+
+        // 禁用编辑按钮
+        toggle_edit_buttons(0);
+    }
+    else
+    {
+        // 编辑模式 (检查管理员权限)
+        if (check_admin())
+        {
+            toggle_edit_buttons(1);
+        }
+        else
+        {
+            toggle_edit_buttons(0);
+        }
+    }
+    return IUP_DEFAULT;
+}
+
+// 主题切换回调
+int btn_theme_cb(Ihandle *self)
+{
+    is_dark_mode = !is_dark_mode;
+    if (is_dark_mode)
+        IupSetAttribute(btn_theme, "TITLE", "浅色模式");
+    else
+        IupSetAttribute(btn_theme, "TITLE", "深色模式");
+        
+    apply_theme();
+    return IUP_DEFAULT;
+}

src/globals.c

@@ -0,0 +1,24 @@
+#include <stdlib.h>
+#include "globals.h"
+
+// 全局控件定义
+Ihandle *dlg = NULL;                                                                                              // 主对话框
+Ihandle *tabs_main = NULL;                                                                                        // 主选项卡
+Ihandle *list_sys = NULL, *list_user = NULL, *list_merged = NULL;                                                 // 列表控件
+Ihandle *lbl_status = NULL;                                                                                       // 状态栏
+Ihandle *btn_new = NULL, *btn_edit = NULL, *btn_browse = NULL, *btn_del = NULL, *btn_up = NULL, *btn_down = NULL; // 右侧按钮
+Ihandle *btn_undo = NULL, *btn_redo = NULL;                                                                       // 撤销重做按钮
+Ihandle *btn_import = NULL, *btn_export = NULL;                                                                   // 导入导出按钮
+Ihandle *btn_ok = NULL, *btn_cancel = NULL, *btn_help = NULL;                                                     // 确认取消帮助按钮
+Ihandle *btn_clean = NULL;                                                                                        // 一键清理按钮
+Ihandle *btn_theme = NULL;                                                                                        // 主题切换按钮
+Ihandle *txt_search = NULL;                                                                                       // 搜索框
+
+// 历史记录栈
+HistoryStack undo_stack = {0};
+HistoryStack redo_stack = {0};
+
+// 全局变量定义
+StringList raw_sys_paths = {0};
+StringList raw_user_paths = {0};
+int is_dark_mode = 0; // 默认浅色模式

src/main.c

@@ -1,135 +1,71 @@
-#include <windows.h>
 #include <iup.h>
 #include <stdio.h>
 #include <stdlib.h>
-#include <wchar.h>
 #include "globals.h"
 #include "utils.h"
 #include "registry.h"
-#include "callbacks.h"
+#include "ui.h"
+#include "cb_main.h"
 
-#ifdef _WIN32
-#include <windows.h>
-#include <direct.h>
-#endif
-
-// 全局控件定义
-Ihandle *dlg, *list_path, *lbl_status;
-Ihandle *btn_new, *btn_edit, *btn_browse, *btn_del, *btn_up, *btn_down;
-Ihandle *btn_ok, *btn_cancel, *btn_help;
+/*
+编译命令：
+Remove-Item -Path "obj\*.o" -Force -ErrorAction SilentlyContinue && mingw32-make
+打包命令：
+build_installer.bat
+*/
 
 // 主函数
 int main(int argc, char **argv)
 {
-    // 强制设置 UTF8MODE 环境变量，必须在 IupOpen 之前
-    putenv("IUP_UTF8MODE=YES");
+    // 初始化 IUP
+    if (IupOpen(&argc, &argv) == IUP_ERROR)
+    {
+        return 1;
+    }
 
-    IupOpen(&argc, &argv);
+    // 开启 UTF-8 支持
     IupSetGlobal("UTF8MODE", "YES");
 
-    // 创建列表控件
-    list_path = IupFlatList();
-    IupSetAttribute(list_path, "EXPAND", "YES");
-    IupSetAttribute(list_path, "ITEMPADDING", "5x5");
-    IupSetAttribute(list_path, "BACKCOLOR", "255 255 255");
-    IupSetAttribute(list_path, "BORDER", "YES");
-    IupSetAttribute(list_path, "CANFOCUS", "YES");
-    IupSetAttribute(list_path, "HLINE", "NO"); // 禁用横线，使用斑马纹
-    // IupFlatList 不支持 VISIBLELINES，高度由 EXPAND 和布局决定
+    // 启用 UIPI 绕过，允许拖拽
+    HMODULE hUser32 = LoadLibraryA("user32.dll");
+    if (hUser32)
+    {
+        typedef BOOL(WINAPI * ChangeWindowMessageFilterProc)(UINT, DWORD);
+        ChangeWindowMessageFilterProc pChangeWindowMessageFilter = (ChangeWindowMessageFilterProc)GetProcAddress(hUser32, "ChangeWindowMessageFilter");
+        if (pChangeWindowMessageFilter)
+        {
+            // WM_DROPFILES = 0x0233, WM_COPYDATA = 0x004A, MSGFLT_ADD = 1
+            pChangeWindowMessageFilter(0x0233, 1);
+            pChangeWindowMessageFilter(0x004A, 1);
+        }
+        FreeLibrary(hUser32);
+    }
 
-    // 创建右侧按钮
-    btn_new = IupButton("新建(N)", NULL);
-    btn_edit = IupButton("编辑(E)", NULL);
-    btn_browse = IupButton("浏览(B)...", NULL);
-    btn_del = IupButton("删除(D)", NULL);
-    btn_up = IupButton("上移(U)", NULL);
-    btn_down = IupButton("下移(O)", NULL);
+    // 初始化历史栈
+    init_history_stack(&undo_stack);
+    init_history_stack(&redo_stack);
 
-    // 设置按钮回调
-    IupSetCallback(btn_new, "ACTION", (Icallback)btn_new_cb);
-    IupSetCallback(btn_edit, "ACTION", (Icallback)btn_edit_cb);
-    IupSetCallback(btn_browse, "ACTION", (Icallback)btn_browse_cb);
-    IupSetCallback(btn_del, "ACTION", (Icallback)btn_del_cb);
-    IupSetCallback(btn_up, "ACTION", (Icallback)btn_up_cb);
-    IupSetCallback(btn_down, "ACTION", (Icallback)btn_down_cb);
+    // 创建主界面
+    dlg = create_main_dialog();
 
-    // 设置双击回调
-    IupSetCallback(list_path, "DBLCLICK_CB", (Icallback)list_dblclick_cb);
-
-    // 设置按钮大小 (宽度和高度都增加约1/4)
-    IupSetAttribute(btn_new, "RASTERSIZE", "100x32");
-    IupSetAttribute(btn_edit, "RASTERSIZE", "100x32");
-    IupSetAttribute(btn_browse, "RASTERSIZE", "100x32");
-    IupSetAttribute(btn_del, "RASTERSIZE", "100x32");
-    IupSetAttribute(btn_up, "RASTERSIZE", "100x32");
-    IupSetAttribute(btn_down, "RASTERSIZE", "100x32");
-
-    Ihandle *vbox_btns = IupVbox(
-        btn_new, btn_edit, btn_browse, btn_del,
-        IupFill(), // 间隔
-        btn_up, btn_down,
-        NULL);
-    IupSetAttribute(vbox_btns, "GAP", "5");
-    IupSetAttribute(vbox_btns, "MARGIN", "0x0");
-
-    // 上部布局：列表 + 按钮
-    Ihandle *hbox_main = IupHbox(list_path, vbox_btns, NULL);
-    IupSetAttribute(hbox_main, "GAP", "10");
-    IupSetAttribute(hbox_main, "MARGIN", "10x10");
-
-    // 状态标签
-    lbl_status = IupLabel("状态: 就绪");
-    IupSetAttribute(lbl_status, "EXPAND", "HORIZONTAL");
-
-    // 底部按钮
-    btn_ok = IupButton("确定", NULL);
-    btn_cancel = IupButton("取消", NULL);
-    btn_help = IupButton("帮助(?)", NULL);
-
-    IupSetCallback(btn_ok, "ACTION", (Icallback)btn_ok_cb);
-    IupSetCallback(btn_cancel, "ACTION", (Icallback)btn_cancel_cb);
-    IupSetCallback(btn_help, "ACTION", (Icallback)btn_help_cb);
-
-    IupSetAttribute(btn_ok, "RASTERSIZE", "100x32");
-    IupSetAttribute(btn_cancel, "RASTERSIZE", "100x32");
-    IupSetAttribute(btn_help, "RASTERSIZE", "100x32");
-
-    Ihandle *hbox_bottom = IupHbox(lbl_status, IupFill(), btn_help, btn_ok, btn_cancel, NULL);
-    IupSetAttribute(hbox_bottom, "GAP", "10");
-    IupSetAttribute(hbox_bottom, "MARGIN", "10x10");
-    IupSetAttribute(hbox_bottom, "ALIGNMENT", "ACENTER");
-
-    // 总体布局
-    Ihandle *vbox_all = IupVbox(
-        IupLabel("系统变量 Path:"),
-        hbox_main,
-        hbox_bottom,
-        NULL);
-    IupSetAttribute(vbox_all, "MARGIN", "10x10");
-    IupSetAttribute(vbox_all, "GAP", "5");
-
-    // 创建对话框
-    dlg = IupDialog(vbox_all);
-    IupSetAttribute(dlg, "TITLE", "编辑环境变量 (IUP版)");
-    IupSetAttribute(dlg, "SIZE", "450x350");
-    IupSetAttribute(dlg, "MINBOX", "NO");
-    IupSetAttribute(dlg, "MAXBOX", "NO");
+    // 设置全局按键回调 (如果在 ui.c 中未设置)
+    IupSetCallback(dlg, "K_ANY", (Icallback)dialog_k_any_cb);
 
     // 加载数据
     if (!check_admin())
     {
-        IupMessage("警告", "程序未以管理员身份运行，您只能查看，无法保存更改！");
-        IupSetAttribute(dlg, "TITLE", "编辑环境变量 (只读模式)");
-        IupSetAttribute(lbl_status, "TITLE", "状态: 只读模式 (权限不足)");
+        IupMessage("警告", "未检测到管理员权限！\n您可能无法保存更改。\n请右键以【管理员身份运行】。");
     }
 
+    load_all_paths();
+
+    // 显示对话框
     IupShowXY(dlg, IUP_CENTER, IUP_CENTER);
 
-    // IUP List APPEND 属性需要在控件 Map 之后才能生效
-    // IupShowXY 会触发 Map
-    load_path();
-
+    // 进入主循环
     IupMainLoop();
+
+    // 清理资源
     IupClose();
     return 0;
 }

src/registry.c

@@ -6,17 +6,23 @@
 #include <stdlib.h>
 #include <wchar.h>
 
-// 从注册表加载PATH
-void load_path()
+// 内部辅助函数：加载单个列表
+static void load_single_path(HKEY hKeyRoot, const wchar_t *regPath, Ihandle *list, StringList *cache)
 {
+    // 清空旧缓存
+    clear_string_list(cache);
+
     HKEY hKey;
-    LONG res = RegOpenKeyExW(HKEY_LOCAL_MACHINE, REG_PATH, 0, KEY_READ, &hKey);
+    LONG res = RegOpenKeyExW(hKeyRoot, regPath, 0, KEY_READ, &hKey);
     if (res != ERROR_SUCCESS)
     {
-        char msg[512];
-        snprintf(msg, sizeof(msg), "无法打开注册表键 (HKLM)。\n路径: %ls\n错误码: %ld\n\n请尝试右键点击程序 -> '以管理员身份运行'。", REG_PATH, res);
-        IupMessage("错误", msg);
-        IupSetAttribute(lbl_status, "TITLE", "状态: 注册表读取失败");
+        // 只有 HKLM 失败才提示需要管理员，HKCU 失败可能是其他原因
+        if (hKeyRoot == HKEY_LOCAL_MACHINE)
+        {
+            char msg[512];
+            snprintf(msg, sizeof(msg), "无法打开注册表键 (HKLM)。\n路径: %ls\n错误码: %ld\n\n请尝试右键点击程序 -> '以管理员身份运行'。", regPath, res);
+            IupMessage("错误", msg);
+        }
         return;
     }
 
@@ -24,172 +30,148 @@ void load_path()
     res = RegQueryValueExW(hKey, REG_VALUE, NULL, &type, NULL, &size);
     if (res == ERROR_SUCCESS)
     {
-        // 安全分配内存：size 是字节数，多分配 2 个字节给 null 终止符
         wchar_t *buffer = (wchar_t *)malloc(size + 2);
-        if (!buffer)
+        if (buffer)
         {
-            IupMessage("错误", "内存分配失败！");
-            RegCloseKey(hKey);
-            return;
-        }
-
-        // 初始化内存
-        memset(buffer, 0, size + 2);
-
-        if (RegQueryValueExW(hKey, REG_VALUE, NULL, &type, (LPBYTE)buffer, &size) == ERROR_SUCCESS)
-        {
-            // 重新实现分割逻辑，避免 wcstok 的兼容性问题
-            wchar_t *current = buffer;
-            wchar_t *next_semicolon = NULL;
-            int count = 0;
-
-            // 清空列表
-            IupSetAttribute(list_path, "REMOVEITEM", "ALL");
-
-            // 检查内容是否为空
-            if (wcslen(buffer) == 0)
+            memset(buffer, 0, size + 2);
+            if (RegQueryValueExW(hKey, REG_VALUE, NULL, &type, (LPBYTE)buffer, &size) == ERROR_SUCCESS)
             {
-                IupMessage("提示", "读取到的 PATH 变量为空！");
+                wchar_t *current = buffer;
+                wchar_t *next_semicolon = NULL;
+                int count = 0;
+
+                IupSetAttribute(list, "REMOVEITEM", "ALL");
+
+                while (*current)
+                {
+                    next_semicolon = wcschr(current, L';');
+                    if (next_semicolon)
+                        *next_semicolon = L'\0';
+
+                    if (wcslen(current) > 0)
+                    {
+                        char *utf8_str = wide_to_utf8(current);
+                        
+                        // 添加到列表
+                        count++;
+                        IupSetAttributeId(list, "", count, utf8_str);
+                        
+                        // 添加到缓存
+                        add_string_list(cache, utf8_str);
+
+                        free(utf8_str);
+                    }
+
+                    if (next_semicolon)
+                        current = next_semicolon + 1;
+                    else
+                        break;
+                }
+
+                IupSetInt(list, "COUNT", count);
+                IupSetInt(list, "VALUE", 1);
             }
-
-            while (*current)
-            {
-                // 查找下一个分号
-                next_semicolon = wcschr(current, L';');
-                if (next_semicolon)
-                {
-                    *next_semicolon = L'\0'; // 临时截断
-                }
-
-                // 跳过空项
-                if (wcslen(current) > 0)
-                {
-                    char *utf8_str = wide_to_utf8(current);
-
-                    count++;
-                    IupSetAttributeId(list_path, "", count, utf8_str);
-
-                    free(utf8_str);
-                }
-
-                if (next_semicolon)
-                {
-                    current = next_semicolon + 1;
-                }
-                else
-                {
-                    break;
-                }
-            }
-
-            IupSetInt(list_path, "COUNT", count); // 显式设置列表项数量
-            IupSetInt(list_path, "VALUE", 1);     // 选中第一项
-            
-            // 刷新斑马纹样式
-            refresh_list_style();
-            
-            char status_msg[100];
-            sprintf(status_msg, "状态: 已加载 %d 个条目", count);
-            IupSetAttribute(lbl_status, "TITLE", status_msg);
+            free(buffer);
         }
-        else
-        {
-            IupMessage("错误", "读取 PATH 值内容失败！");
-            IupSetAttribute(lbl_status, "TITLE", "状态: 读取值内容失败");
-        }
-        free(buffer);
-    }
-    else
-    {
-        char msg[256];
-        sprintf(msg, "查询 PATH 值大小失败。错误码: %ld", res);
-        IupMessage("错误", msg);
-        IupSetAttribute(lbl_status, "TITLE", "状态: 查询值失败");
     }
     RegCloseKey(hKey);
 }
 
-// 保存PATH到注册表
-void save_path()
+// 加载所有PATH
+void load_all_paths()
 {
-    if (!check_admin())
-    {
-        IupMessage("错误", "需要管理员权限才能保存更改！\n请重新以管理员身份运行程序。");
-        return;
-    }
+    load_single_path(HKEY_LOCAL_MACHINE, REG_PATH_SYS, list_sys, &raw_sys_paths);
+    load_single_path(HKEY_CURRENT_USER, REG_PATH_USER, list_user, &raw_user_paths);
 
-    int count = IupGetInt(list_path, "COUNT");
-    if (count == 0)
-    {
-        // 警告：清空PATH是很危险的
-        if (IupAlarm("警告", "PATH 为空！这可能导致系统命令无法使用。\n确定要保存吗？", "确定", "取消", NULL) != 1)
-        {
-            return;
-        }
-    }
+    refresh_list_style();
+    IupSetAttribute(lbl_status, "TITLE", "状态: 已加载变量");
+}
 
-    // 计算所需缓冲区大小
+// 内部辅助函数：保存单个列表
+static int save_single_path(HKEY hKeyRoot, const wchar_t *regPath, Ihandle *list)
+{
+    int count = IupGetInt(list, "COUNT");
+
+    // 计算大小
     size_t total_len = 0;
     for (int i = 1; i <= count; i++)
     {
-        char *item = IupGetAttributeId(list_path, "", i);
+        char *item = IupGetAttributeId(list, "", i);
         if (item)
         {
             wchar_t *witem = utf8_to_wide(item);
-            total_len += wcslen(witem) + 1; // +1 for ';'
+            total_len += wcslen(witem) + 1;
             free(witem);
         }
     }
-    total_len += 1; // null terminator
+    total_len += 1;
 
     wchar_t *buffer = (wchar_t *)malloc(total_len * sizeof(wchar_t));
     if (!buffer)
-    {
-        IupMessage("错误", "内存分配失败 (保存时)！");
-        return;
-    }
-    buffer[0] = L'\0';
+        return 0;
 
+    buffer[0] = L'\0';
     for (int i = 1; i <= count; i++)
     {
-        char *item = IupGetAttributeId(list_path, "", i);
+        char *item = IupGetAttributeId(list, "", i);
         if (item)
         {
             wchar_t *witem = utf8_to_wide(item);
             wcscat(buffer, witem);
             if (i < count)
-            {
                 wcscat(buffer, L";");
-            }
             free(witem);
         }
     }
 
-    // 写入注册表
     HKEY hKey;
-    if (RegOpenKeyExW(HKEY_LOCAL_MACHINE, REG_PATH, 0, KEY_WRITE, &hKey) == ERROR_SUCCESS)
+    int success = 0;
+    if (RegOpenKeyExW(hKeyRoot, regPath, 0, KEY_WRITE, &hKey) == ERROR_SUCCESS)
     {
-        // 使用 REG_EXPAND_SZ 类型，因为 PATH 可能包含 %SystemRoot%
         DWORD size = (wcslen(buffer) + 1) * sizeof(wchar_t);
         if (RegSetValueExW(hKey, REG_VALUE, 0, REG_EXPAND_SZ, (LPBYTE)buffer, size) == ERROR_SUCCESS)
         {
-            // 发送系统广播通知环境变量已更改
-            SendMessageTimeoutW(HWND_BROADCAST, WM_SETTINGCHANGE, 0, (LPARAM)L"Environment", SMTO_ABORTIFHUNG, 5000, NULL);
-            IupMessage("成功", "PATH 环境变量已更新！");
-            IupSetAttribute(lbl_status, "TITLE", "状态: 保存成功");
-        }
-        else
-        {
-            IupMessage("错误", "写入注册表失败！");
-            IupSetAttribute(lbl_status, "TITLE", "状态: 保存失败");
+            success = 1;
         }
         RegCloseKey(hKey);
     }
-    else
-    {
-        IupMessage("错误", "无法打开注册表进行写入。请检查权限！");
-        IupSetAttribute(lbl_status, "TITLE", "状态: 打开注册表失败");
-    }
 
     free(buffer);
+    return success;
+}
+
+// 保存所有PATH
+void save_all_paths()
+{
+    if (!check_admin())
+    {
+        IupMessage("错误", "需要管理员权限才能保存更改！");
+        return;
+    }
+
+    // 备份
+    backup_registry();
+
+    int sys_ok = save_single_path(HKEY_LOCAL_MACHINE, REG_PATH_SYS, list_sys);
+    int user_ok = save_single_path(HKEY_CURRENT_USER, REG_PATH_USER, list_user);
+
+    if (sys_ok && user_ok)
+    {
+        SendMessageTimeoutW(HWND_BROADCAST, WM_SETTINGCHANGE, 0, (LPARAM)L"Environment", SMTO_ABORTIFHUNG, 5000, NULL);
+        IupMessage("成功", "系统和用户 PATH 环境变量均已更新！");
+        IupSetAttribute(lbl_status, "TITLE", "状态: 全部保存成功");
+    }
+    else if (sys_ok)
+    {
+        IupMessage("提示", "系统变量保存成功，但用户变量保存失败。");
+    }
+    else if (user_ok)
+    {
+        IupMessage("提示", "用户变量保存成功，但系统变量保存失败。");
+    }
+    else
+    {
+        IupMessage("错误", "保存失败！");
+        IupSetAttribute(lbl_status, "TITLE", "状态: 保存失败");
+    }
 }

src/ui.c

@@ -0,0 +1,173 @@
+#include "ui.h"
+#include "config.h"
+#include "globals.h"
+#include "ui_utils.h"
+#include "cb_edit.h"
+#include "cb_file.h"
+#include "cb_main.h"
+#include <stdlib.h>
+
+// 创建列表控件
+Ihandle *create_path_list()
+{
+    Ihandle *list = IupFlatList();
+    IupSetAttribute(list, "EXPAND", "YES");
+    IupSetAttribute(list, "MULTIPLE", "YES");
+    IupSetAttribute(list, "ITEMPADDING", UI_LIST_ITEM_PADDING);
+    IupSetAttribute(list, "BACKCOLOR", UI_LIST_BGCOLOR);
+    IupSetAttribute(list, "BORDER", "YES");
+    IupSetAttribute(list, "CANFOCUS", "YES");
+    IupSetAttribute(list, "HLINE", "NO");
+    IupSetCallback(list, "DBLCLICK_CB", (Icallback)list_dblclick_cb);
+    IupSetCallback(list, "DROPFILES_CB", (Icallback)list_dropfiles_cb);
+    IupSetCallback(list, "K_ANY", (Icallback)list_k_any_cb);
+    IupSetCallback(list, "MOTION_CB", (Icallback)list_motion_cb);
+    return list;
+}
+
+// 创建右侧功能按钮区域
+Ihandle *create_main_buttons()
+{
+    // 创建右侧按钮
+    btn_new = IupButton("新建(N)", NULL);
+    btn_edit = IupButton("编辑(E)", NULL);
+    btn_browse = IupButton("浏览(B)...", NULL);
+    btn_del = IupButton("删除(D)", NULL);
+    btn_undo = IupButton("撤销(Z)", NULL);
+    btn_redo = IupButton("重做(Y)", NULL);
+    btn_up = IupButton("上移(U)", NULL);
+    btn_down = IupButton("下移(O)", NULL);
+    btn_clean = IupButton("一键清理", NULL);
+
+    // 设置按钮回调
+    IupSetCallback(btn_new, "ACTION", (Icallback)btn_new_cb);
+    IupSetCallback(btn_edit, "ACTION", (Icallback)btn_edit_cb);
+    IupSetCallback(btn_browse, "ACTION", (Icallback)btn_browse_cb);
+    IupSetCallback(btn_del, "ACTION", (Icallback)btn_del_cb);
+    IupSetCallback(btn_undo, "ACTION", (Icallback)btn_undo_cb);
+    IupSetCallback(btn_redo, "ACTION", (Icallback)btn_redo_cb);
+    IupSetCallback(btn_up, "ACTION", (Icallback)btn_up_cb);
+    IupSetCallback(btn_down, "ACTION", (Icallback)btn_down_cb);
+    IupSetCallback(btn_clean, "ACTION", (Icallback)btn_clean_cb);
+
+    // 设置按钮大小
+    IupSetAttribute(btn_new, "RASTERSIZE", UI_BUTTON_SIZE);
+    IupSetAttribute(btn_edit, "RASTERSIZE", UI_BUTTON_SIZE);
+    IupSetAttribute(btn_browse, "RASTERSIZE", UI_BUTTON_SIZE);
+    IupSetAttribute(btn_del, "RASTERSIZE", UI_BUTTON_SIZE);
+    IupSetAttribute(btn_undo, "RASTERSIZE", UI_BUTTON_SIZE);
+    IupSetAttribute(btn_redo, "RASTERSIZE", UI_BUTTON_SIZE);
+    IupSetAttribute(btn_up, "RASTERSIZE", UI_BUTTON_SIZE);
+    IupSetAttribute(btn_down, "RASTERSIZE", UI_BUTTON_SIZE);
+    IupSetAttribute(btn_clean, "RASTERSIZE", UI_BUTTON_SIZE);
+
+    Ihandle *vbox_btns = IupVbox(
+        btn_new, btn_edit, btn_browse, btn_del,
+        IupFill(), // 间隔
+        btn_undo, btn_redo,
+        IupFill(),
+        btn_clean, // 放在上移下移之前，或者最下面，这里放在中间偏下
+        IupFill(),
+        btn_up, btn_down,
+        NULL);
+    IupSetAttribute(vbox_btns, "GAP", UI_GAP_BUTTONS);
+    IupSetAttribute(vbox_btns, "MARGIN", "0x0");
+
+    return vbox_btns;
+}
+
+// 创建底部按钮区域
+Ihandle *create_bottom_buttons()
+{
+    // 创建底部按钮
+    btn_help = IupButton("帮助(H)", NULL);
+    IupSetCallback(btn_help, "ACTION", (Icallback)btn_help_cb);
+    IupSetAttribute(btn_help, "RASTERSIZE", UI_BUTTON_SMALL_SIZE);
+
+    btn_theme = IupButton("深色模式", NULL);
+    IupSetCallback(btn_theme, "ACTION", (Icallback)btn_theme_cb);
+    IupSetAttribute(btn_theme, "RASTERSIZE", UI_BUTTON_SMALL_SIZE);
+
+    lbl_status = IupLabel("就绪");
+    IupSetAttribute(lbl_status, "EXPAND", "HORIZONTAL");
+
+    btn_import = IupButton("导入配置", NULL);
+    IupSetCallback(btn_import, "ACTION", (Icallback)btn_import_cb);
+    IupSetAttribute(btn_import, "RASTERSIZE", UI_BUTTON_SIZE);
+
+    btn_export = IupButton("导出配置", NULL);
+    IupSetCallback(btn_export, "ACTION", (Icallback)btn_export_cb);
+    IupSetAttribute(btn_export, "RASTERSIZE", UI_BUTTON_SIZE);
+
+    btn_ok = IupButton("确定(O)", NULL);
+    IupSetCallback(btn_ok, "ACTION", (Icallback)btn_ok_cb);
+    IupSetAttribute(btn_ok, "RASTERSIZE", UI_BUTTON_SIZE);
+
+    btn_cancel = IupButton("取消(C)", NULL);
+    IupSetCallback(btn_cancel, "ACTION", (Icallback)btn_cancel_cb);
+    IupSetAttribute(btn_cancel, "RASTERSIZE", UI_BUTTON_SIZE);
+
+    Ihandle *hbox_bottom = IupHbox(
+        btn_help,
+        btn_theme,
+        lbl_status,
+        IupFill(),
+        btn_import,
+        btn_export,
+        btn_ok,
+        btn_cancel,
+        NULL);
+    IupSetAttribute(hbox_bottom, "GAP", UI_GAP_BOTTOM);
+    IupSetAttribute(hbox_bottom, "ALIGNMENT", "ACENTER");
+    IupSetAttribute(hbox_bottom, "MARGIN", "0x0");
+
+    return hbox_bottom;
+}
+
+// 创建主对话框
+Ihandle *create_main_dialog()
+{
+    // 创建两个列表
+    list_sys = create_path_list();
+    list_user = create_path_list();
+    list_merged = create_path_list();
+
+    IupSetAttribute(list_merged, "READONLY", "YES");
+    IupSetAttribute(list_merged, "MULTIPLE", "NO");
+    IupSetAttribute(list_merged, "BGCOLOR", UI_LIST_MERGED_BGCOLOR); // 灰色背景
+
+    // 创建标签页
+    tabs_main = IupTabs(list_sys, list_user, list_merged, NULL);
+    IupSetAttribute(tabs_main, "TABTITLE0", "系统变量 (System PATH)");
+    IupSetAttribute(tabs_main, "TABTITLE1", "用户变量 (User PATH)");
+    IupSetAttribute(tabs_main, "TABTITLE2", "合并预览 (Merged PATH)");
+
+    // 设置标签页切换回调
+    IupSetCallback(tabs_main, "TABCHANGEPOS_CB", (Icallback)tabs_tabchange_cb);
+
+    // 搜索框
+    txt_search = IupText(NULL);
+    IupSetAttribute(txt_search, "NAME", "TXT_SEARCH");
+    IupSetAttribute(txt_search, "CUEBANNER", "搜索...");
+    IupSetCallback(txt_search, "VALUECHANGED_CB", (Icallback)txt_search_cb);
+    IupSetAttribute(txt_search, "EXPAND", "HORIZONTAL");
+
+    // 布局
+    Ihandle *btns = create_main_buttons();
+    Ihandle *hbox_mid = IupHbox(tabs_main, btns, NULL);
+    IupSetAttribute(hbox_mid, "GAP", UI_GAP_MAIN);
+    IupSetAttribute(hbox_mid, "MARGIN", "0x0");
+
+    Ihandle *bottom = create_bottom_buttons();
+
+    Ihandle *vbox_main = IupVbox(txt_search, hbox_mid, bottom, NULL);
+    IupSetAttribute(vbox_main, "GAP", UI_GAP_MAIN);
+    IupSetAttribute(vbox_main, "MARGIN", UI_MARGIN_MAIN);
+
+    Ihandle *dlg = IupDialog(vbox_main);
+    IupSetAttribute(dlg, "TITLE", UI_WINDOW_TITLE);
+    IupSetAttribute(dlg, "RASTERSIZE", UI_WINDOW_SIZE);
+    IupSetAttribute(dlg, "MINSIZE", UI_WINDOW_SIZE);
+
+    return dlg;
+}

src/ui_utils.c

@@ -0,0 +1,225 @@
+#include "ui_utils.h"
+#include "globals.h"
+#include "utils.h"
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+// 获取第一个选中的索引（1-based），如果没有选中则返回 0
+int get_first_selected_index(Ihandle *list)
+{
+    char *value = IupGetAttribute(list, "VALUE");
+    if (!value)
+        return 0;
+    int len = strlen(value);
+    for (int i = 0; i < len; i++)
+    {
+        if (value[i] == '+')
+            return i + 1;
+    }
+    return 0;
+}
+
+// 设置单选（1-based）
+void set_single_selection(Ihandle *list, int index)
+{
+    int count = IupGetInt(list, "COUNT");
+    if (count <= 0)
+        return;
+
+    char *new_val = (char *)malloc(count + 1);
+    if (!new_val)
+        return;
+
+    for (int i = 0; i < count; i++)
+    {
+        new_val[i] = '-';
+    }
+    new_val[count] = '\0';
+
+    if (index >= 1 && index <= count)
+    {
+        new_val[index - 1] = '+';
+    }
+
+    IupSetAttribute(list, "VALUE", new_val);
+    free(new_val);
+}
+
+// 从原始数据刷新UI
+void refresh_ui_from_raw(Ihandle *list, StringList *raw)
+{
+    IupSetAttribute(list, "REMOVEITEM", "ALL");
+    for (int i = 0; i < raw->count; i++)
+    {
+        IupSetAttributeId(list, "", i + 1, raw->items[i]);
+    }
+    IupSetInt(list, "COUNT", raw->count);
+    refresh_single_list_style(list);
+}
+
+// 记录历史
+void record_history()
+{
+    push_history(&undo_stack, &raw_sys_paths, &raw_user_paths);
+    clear_history_stack(&redo_stack);
+    // 更新按钮状态（可选）
+    // IupSetAttribute(btn_undo, "ACTIVE", "YES");
+    // IupSetAttribute(btn_redo, "ACTIVE", "NO");
+}
+
+// 静态辅助函数：对话框确定
+static int on_dialog_ok(Ihandle *self)
+{
+    Ihandle *dlg = IupGetDialog(self);
+    IupSetAttribute(dlg, "MY_STATUS", "1");
+    return IUP_CLOSE;
+}
+
+// 静态辅助函数：对话框取消
+static int on_dialog_cancel(Ihandle *self)
+{
+    Ihandle *dlg = IupGetDialog(self);
+    IupSetAttribute(dlg, "MY_STATUS", "0");
+    return IUP_CLOSE;
+}
+
+// 自定义输入对话框
+int custom_input_dialog(const char *title, const char *label_text, char *buffer, int buffer_size)
+{
+    Ihandle *text = IupText(NULL);
+    IupSetAttribute(text, "VALUE", buffer);
+    IupSetAttribute(text, "EXPAND", "HORIZONTAL");
+    IupSetAttribute(text, "RASTERSIZE", "500x");
+    IupSetAttribute(text, "NAME", "INPUT_TEXT");
+
+    Ihandle *btn_ok = IupButton("确定", NULL);
+    IupSetCallback(btn_ok, "ACTION", on_dialog_ok);
+    IupSetAttribute(btn_ok, "RASTERSIZE", "100x32");
+
+    Ihandle *btn_cancel = IupButton("取消", NULL);
+    IupSetCallback(btn_cancel, "ACTION", on_dialog_cancel);
+    IupSetAttribute(btn_cancel, "RASTERSIZE", "100x32");
+
+    Ihandle *vbox = IupVbox(
+        IupLabel(label_text),
+        text,
+        IupHbox(IupFill(), btn_ok, btn_cancel, NULL),
+        NULL);
+    IupSetAttribute(vbox, "MARGIN", "15x15");
+    IupSetAttribute(vbox, "GAP", "10");
+
+    Ihandle *dlg = IupDialog(vbox);
+    IupSetAttribute(dlg, "TITLE", title);
+    IupSetAttribute(dlg, "MINBOX", "NO");
+    IupSetAttribute(dlg, "MAXBOX", "NO");
+    IupSetAttribute(dlg, "RESIZE", "NO");
+
+    IupSetAttributeHandle(dlg, "DEFAULTENTER", btn_ok);
+    IupSetAttributeHandle(dlg, "DEFAULTESC", btn_cancel);
+    
+    // 应用主题到对话框
+    if (is_dark_mode) {
+        IupSetAttribute(dlg, "BGCOLOR", "50 50 50");
+        IupSetAttribute(text, "BGCOLOR", "30 30 30");
+        IupSetAttribute(text, "FGCOLOR", "255 255 255");
+        IupSetAttribute(IupGetChild(vbox, 0), "FGCOLOR", "255 255 255"); // Label
+    }
+
+    IupPopup(dlg, IUP_CENTER, IUP_CENTER);
+
+    int result = IupGetInt(dlg, "MY_STATUS");
+    if (result == 1)
+    {
+        char *val = IupGetAttribute(text, "VALUE");
+        if (val)
+        {
+            strncpy(buffer, val, buffer_size);
+            buffer[buffer_size - 1] = '\0';
+        }
+    }
+
+    IupDestroy(dlg);
+    return result;
+}
+
+// 获取当前选中的列表
+Ihandle *get_current_list()
+{
+    // 获取当前选中的 Tab 索引
+    int pos = IupGetInt(tabs_main, "VALUEPOS");
+    if (pos == 0)
+        return list_sys;
+    if (pos == 1)
+        return list_user;
+    if (pos == 2)
+        return list_merged;
+    return list_sys; // 默认
+}
+
+// 从 raw_data 中删除指定字符串
+void remove_from_raw_data(StringList *list, const char *str)
+{
+    if (!list || !str)
+        return;
+    for (int i = 0; i < list->count; i++)
+    {
+        if (strcmp(list->items[i], str) == 0)
+        {
+            free(list->items[i]);
+            // 移动后续元素
+            for (int j = i; j < list->count - 1; j++)
+            {
+                list->items[j] = list->items[j + 1];
+            }
+            list->count--;
+            break; // 假设没有重复，只删除第一个匹配
+        }
+    }
+}
+
+// 切换编辑按钮状态
+void toggle_edit_buttons(int enable)
+{
+    char *val = enable ? "YES" : "NO";
+    IupSetAttribute(btn_new, "ACTIVE", val);        // 新建按钮
+    IupSetAttribute(btn_edit, "ACTIVE", val);       // 编辑按钮
+    IupSetAttribute(btn_browse, "ACTIVE", val);     // 浏览按钮
+    IupSetAttribute(btn_del, "ACTIVE", val);        // 删除按钮
+    IupSetAttribute(btn_clean, "ACTIVE", val);      // 清除按钮
+    IupSetAttribute(btn_up, "ACTIVE", val);         // 上移按钮
+    IupSetAttribute(btn_down, "ACTIVE", val);       // 下移按钮
+    IupSetAttribute(btn_import, "ACTIVE", val);     // 导入按钮
+    IupSetAttribute(btn_export, "ACTIVE", "YES");   // 导出按钮始终可用
+}
+
+// 应用主题
+void apply_theme()
+{
+    char *bg_color = is_dark_mode ? "50 50 50" : "240 240 240";
+    char *fg_color = is_dark_mode ? "255 255 255" : "0 0 0";
+    char *list_bg = is_dark_mode ? "60 60 60" : "255 255 255";
+    char *text_bg = is_dark_mode ? "30 30 30" : "255 255 255";
+    
+    // 主对话框
+    IupSetAttribute(dlg, "BGCOLOR", bg_color);
+    
+    // 列表
+    IupSetAttribute(list_sys, "BACKCOLOR", list_bg);
+    IupSetAttribute(list_sys, "FGCOLOR", fg_color);
+    IupSetAttribute(list_user, "BACKCOLOR", list_bg);
+    IupSetAttribute(list_user, "FGCOLOR", fg_color);
+    IupSetAttribute(list_merged, "BACKCOLOR", list_bg);
+    IupSetAttribute(list_merged, "FGCOLOR", fg_color);
+
+    // 文本框
+    IupSetAttribute(txt_search, "BGCOLOR", text_bg);
+    IupSetAttribute(txt_search, "FGCOLOR", fg_color);
+    
+    // 标签
+    IupSetAttribute(lbl_status, "FGCOLOR", fg_color);
+    
+    // 刷新列表样式
+    refresh_list_style();
+    refresh_single_list_style(list_merged);
+}

src/utils.c

@@ -3,6 +3,9 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <iup.h>
+#include <time.h>
+#include <direct.h>
+#include <string.h>
 
 // 宽字符转UTF-8 (用于IUP显示)
 char *wide_to_utf8(const wchar_t *wstr)
@@ -39,23 +42,298 @@ int check_admin()
     return 0;
 }
 
-// 刷新列表样式（斑马纹）
-void refresh_list_style()
+// 展开环境变量
+char* expand_env_vars(const char* path)
 {
-    if (!list_path)
+    if (!path) return NULL;
+    
+    // 先转换为宽字符，因为ExpandEnvironmentStringsW不支持UTF-8
+    wchar_t *wpath = utf8_to_wide(path);
+    if (!wpath) return NULL;
+    
+    DWORD size = ExpandEnvironmentStringsW(wpath, NULL, 0);
+    if (size == 0) {
+        free(wpath);
+        return NULL;
+    }
+    
+    wchar_t *wexpanded = (wchar_t *)malloc(size * sizeof(wchar_t));
+    ExpandEnvironmentStringsW(wpath, wexpanded, size);
+    free(wpath);
+    
+    char *expanded = wide_to_utf8(wexpanded);
+    free(wexpanded);
+    
+    return expanded;
+}
+
+// 检查路径是否存在
+static int path_exists(const char *path)
+{
+    char *expanded_path = expand_env_vars(path);
+    if (!expanded_path)
+        return 0;
+
+    wchar_t *wpath = utf8_to_wide(expanded_path);
+    free(expanded_path);
+    
+    if (!wpath)
+        return 0;
+
+    DWORD attr = GetFileAttributesW(wpath);
+    free(wpath);
+
+    if (attr == INVALID_FILE_ATTRIBUTES)
+        return 0;
+    return (attr & FILE_ATTRIBUTE_DIRECTORY); // 必须是目录
+}
+
+// 检查路径是否存在（公开给外部使用）
+int is_path_valid(const char *path)
+{
+    return path_exists(path);
+}
+
+// 刷新列表样式（斑马纹 + 有效性检查）
+void refresh_single_list_style(Ihandle *list)
+{
+    if (!list)
         return;
-    int count = IupGetInt(list_path, "COUNT");
+    int count = IupGetInt(list, "COUNT");
+
+    // 用于查重的简单数组（实际项目可以用哈希表）
+    // 为了简单，我们只用双重循环检查重复，性能在几百个条目下没问题
+
     for (int i = 1; i <= count; i++)
     {
-        // 奇数行：白色
-        // 偶数行：极浅灰色 (245 245 245)
-        if (i % 2 == 0)
+        char *item = IupGetAttributeId(list, "", i);
+        if (!item)
+            continue;
+
+        // 默认颜色：黑字
+        char fg_color[32];
+        if (is_dark_mode)
+            strcpy(fg_color, "255 255 255");
+        else
+            strcpy(fg_color, "0 0 0");
+
+        // 1. 检查有效性
+        if (!path_exists(item))
         {
-            IupSetAttributeId(list_path, "ITEMBGCOLOR", i, "245 245 245");
+            // 无效路径：红色
+            sprintf(fg_color, "255 0 0");
+        }
+
+        // 2. 检查重复 (只检查当前项之前的项，如果之前出现过，当前项标橙)
+        for (int j = 1; j < i; j++)
+        {
+            char *prev_item = IupGetAttributeId(list, "", j);
+            if (prev_item && _stricmp(item, prev_item) == 0) // Windows 路径不区分大小写
+            {
+                // 重复路径：橙色
+                sprintf(fg_color, "255 128 0");
+                break;
+            }
+        }
+
+        IupSetAttributeId(list, "ITEMFGCOLOR", i, fg_color);
+
+        // 斑马纹背景
+        if (is_dark_mode)
+        {
+            if (i % 2 == 0)
+                IupSetAttributeId(list, "ITEMBGCOLOR", i, "60 60 60");
+            else
+                IupSetAttributeId(list, "ITEMBGCOLOR", i, "50 50 50");
         }
         else
         {
-            IupSetAttributeId(list_path, "ITEMBGCOLOR", i, "255 255 255");
+            if (i % 2 == 0)
+                IupSetAttributeId(list, "ITEMBGCOLOR", i, "245 245 245");
+            else
+                IupSetAttributeId(list, "ITEMBGCOLOR", i, "255 255 255");
         }
     }
 }
+
+// 刷新所有列表样式
+void refresh_list_style()
+{
+    refresh_single_list_style(list_sys);
+    refresh_single_list_style(list_user);
+}
+
+// 备份注册表
+void backup_registry()
+{
+    // 创建 records 目录
+    if (_mkdir("records") == -1)
+    {
+        // 目录可能已存在，忽略错误
+    }
+
+    // 获取当前时间
+    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);
+
+    // 构造备份文件名
+    char filename[256];
+    snprintf(filename, sizeof(filename), "records\\backup_%s.reg", time_str);
+
+    // 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);
+
+    // 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));
+
+    if (CreateProcessA(NULL, full_cmd, NULL, NULL, FALSE, CREATE_NO_WINDOW, NULL, NULL, &si, &pi))
+    {
+        // 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);
+    }
+}
+
+// 初始化字符串列表
+void init_string_list(StringList *list)
+{
+    list->items = NULL;
+    list->count = 0;
+    list->capacity = 0;
+}
+
+// 不区分大小写的字符串查找 (简单实现)
+char *stristr(const char *haystack, const char *needle)
+{
+    if (!haystack || !needle)
+        return NULL;
+    if (*needle == '\0')
+        return (char *)haystack;
+
+    const char *h = haystack;
+    const char *n = needle;
+    const char *h_start = haystack;
+
+    while (*h)
+    {
+        h_start = h;
+        n = needle;
+        while (*h && *n && (tolower((unsigned char)*h) == tolower((unsigned char)*n)))
+        {
+            h++;
+            n++;
+        }
+        if (*n == '\0')
+            return (char *)h_start;
+        h = h_start + 1;
+    }
+    return NULL;
+}
+
+// 添加字符串到列表
+void add_string_list(StringList *list, const char *str)
+{
+    if (list->count >= list->capacity)
+    {
+        list->capacity = (list->capacity == 0) ? 16 : list->capacity * 2;
+        list->items = (char **)realloc(list->items, list->capacity * sizeof(char *));
+    }
+    list->items[list->count] = _strdup(str); // 复制字符串
+    list->count++;
+}
+
+// 清空字符串列表
+void clear_string_list(StringList *list)
+{
+    for (int i = 0; i < list->count; i++)
+    {
+        free(list->items[i]);
+    }
+    free(list->items);
+    list->items = NULL;
+    list->count = 0;
+    list->capacity = 0;
+}
+
+// 复制字符串列表
+void copy_string_list(StringList *dest, StringList *src)
+{
+    init_string_list(dest);
+    if (!src || src->count == 0)
+        return;
+    for (int i = 0; i < src->count; i++)
+    {
+        add_string_list(dest, src->items[i]);
+    }
+}
+
+// 初始化历史栈
+void init_history_stack(HistoryStack *stack)
+{
+    stack->top = NULL;
+    stack->count = 0;
+}
+
+// 压入历史
+void push_history(HistoryStack *stack, StringList *sys, StringList *user)
+{
+    HistoryNode *node = (HistoryNode *)malloc(sizeof(HistoryNode));
+    if (!node)
+        return;
+
+    copy_string_list(&node->sys_paths, sys);
+    copy_string_list(&node->user_paths, user);
+
+    node->next = stack->top;
+    stack->top = node;
+    stack->count++;
+
+    // 简单限制：如果超过 50 个，就不处理底部了（太麻烦），反正内存够用
+}
+
+// 弹出历史
+int pop_history(HistoryStack *stack, StringList *out_sys, StringList *out_user)
+{
+    if (!stack->top)
+        return 0;
+
+    HistoryNode *node = stack->top;
+    stack->top = node->next;
+    stack->count--;
+
+    // 转移所有权，避免复制
+    *out_sys = node->sys_paths;
+    *out_user = node->user_paths;
+
+    free(node);
+    return 1;
+}
+
+// 清空历史栈
+void clear_history_stack(HistoryStack *stack)
+{
+    while (stack->top)
+    {
+        HistoryNode *node = stack->top;
+        stack->top = node->next;
+
+        clear_string_list(&node->sys_paths);
+        clear_string_list(&node->user_paths);
+        free(node);
+    }
+    stack->count = 0;
+}