【AI插件开发】Notepad++ AI插件开发实践（代码篇）：从Dock窗口集成到功能菜单实现

一、引言

上篇文章已经在Notepad++的插件开发中集成了选中即问AI的功能，这一篇文章将在此基础上进一步集成，支持AI对话窗口以及常见的代码功能菜单：

• 显示AI的Dock窗口，可以用自然语言向 AI 提问或要求执行任务
• 选中代码后使用，AI 会详细解释代码功能
• 需要 AI 帮助改进或修复代码时使用
• 自动生成代码注释
• 选中即问，直接把选中内容丢给AI
• 参数设置，基于插件配置切换AI平台等参数，提供对话框设置及调整平台参数

本篇的主要难点在于如何集成Dock窗口，是自己裸写Window窗口，还是找第三方库，或者从Notepad++的源码中剥离相关代码？

最终选择的是从Notepad++的源码中剥离相关代码的方案，但是直接剥离很难，发现依赖越来越多，因此需要在剥离的基础上做一些改造，删减非必须的功能，比如NppDarkMode裁剪。

注：项目已开源、镜像，欢迎使用及指正

二、Notepad++的源码中剥离Dock窗口

1. 剥离后的Dock文件列表

Common.h
Docking.h
DockingDlgInterface.h
dockingResource.h
dpiManagerV2.cpp
dpiManagerV2.h
NppDarkMode.cpp
NppDarkMode.h
StaticDialog.cpp
StaticDialog.h
Window.h

2. 要点说明

直接从Notepad++中拷贝上述文件代码到项目中引用的话，会发现还要包含其他文件，然后试着把别的文件引入的时候，后面发现引入的文件越来越多，所以需要对部分文件进行裁剪，主要裁剪的代码是NppDarkMode.cpp。 我把NppDarkMode.cpp的代码全删了，然后自己实现了项目中调用了的函数，采集后的NppDarkMode.cpp文件内容如下：

#include "NppDarkMode.h"enum class SystemVersion
{Unknown,Windows10,Windows11
};SystemVersion GetWindowsVersion()
{// 使用RtlGetVersion替代已废弃的GetVersionExtypedef NTSTATUS(WINAPI* RtlGetVersionPtr)(PRTL_OSVERSIONINFOW);OSVERSIONINFOW osInfo = { 0 };HMODULE hMod = GetModuleHandleW(L"ntdll.dll");if (hMod){auto RtlGetVersion = reinterpret_cast<RtlGetVersionPtr>(GetProcAddress(hMod, "RtlGetVersion"));if (RtlGetVersion) {osInfo.dwOSVersionInfoSize = sizeof(osInfo);if (RtlGetVersion(&osInfo) == 0){ // STATUS_SUCCESS// Windows 11的版本号为10.0.22000+if (osInfo.dwMajorVersion == 10 &&osInfo.dwMinorVersion == 0){if (osInfo.dwBuildNumber >= 22000){return SystemVersion::Windows11;}else if (osInfo.dwBuildNumber >= 10240){return SystemVersion::Windows10;}}}}}return SystemVersion::Unknown;
}bool NppDarkMode::isWindows10() { return GetWindowsVersion() == SystemVersion::Windows10; }
bool NppDarkMode::isWindows11() { return GetWindowsVersion() == SystemVersion::Windows11; }
void NppDarkMode::setDarkTitleBar(HWND hwnd) {}

3. AI窗口实现

现在只需要引入DockingDlgInterface.h文件，实现一个基于DockingDlgInterface的窗口即可，其中AiAssistWnd.h：

// AiAssistWnd.h
#pragma once
#include "DockingDlgInterface.h"
#include "PluginInterface.h"class AiAssistWnd : public DockingDlgInterface {
public:AiAssistWnd(HINSTANCE hInst, const NppData& nppData);~AiAssistWnd();// 必需实现的虚函数virtual void init();virtual INT_PTR run_dlgProc(UINT message, WPARAM wParam, LPARAM lParam);// 功能接口void updateModelList(const std::vector<std::wstring>& models);void appendAnswer(const std::wstring& answer);void clearConversation();private:void initControls();void layoutControls(int width, int height);void handleUserInput();// NppHINSTANCE _hInst;NppData _nppData;// 控件句柄HWND _hModelCombo = nullptr;HWND _hInputEdit = nullptr;HWND _hAnswerView = nullptr;// 配置参数const int CONTROL_MARGIN = 5;const int COMBO_HEIGHT = 25;const int INPUT_HEIGHT = 80;// 字体资源HFONT _hFont = nullptr;HFONT _hBoldFont = nullptr;// 控件ID定义enum ControlID {IDC_MODEL_COMBO = 2000,IDC_INPUT_EDIT,IDC_ANSWER_VIEW};
};

代码实现：

// AiAssistWnd.cpp
#include "AiAssistWnd.h"
#include "resource.h"
#include <richedit.h>
#include <commctrl.h>
#include <format>AiAssistWnd::AiAssistWnd(HINSTANCE hInst, const NppData& nppData): DockingDlgInterface(IDD_DIALOG_AI_ASSIST), _hInst(hInst), _nppData(nppData)
{this->_hParent = _nppData._nppHandle;
}AiAssistWnd::~AiAssistWnd()
{if (_hFont) DeleteObject(_hFont);if (_hBoldFont) DeleteObject(_hBoldFont);
}void AiAssistWnd::init()
{DockingDlgInterface::init(_hInst, _hParent);// 注册Dock窗口tTbData tbData = { 0 };DockingDlgInterface::create(&tbData);tbData.uMask = DWS_DF_CONT_RIGHT | DWS_ICONTAB;;tbData.pszModuleName = L"AI Assistant";;tbData.dlgID = _dlgID;::SendMessage(_nppData._nppHandle, NPPM_DMMREGASDCKDLG, 0, (LPARAM)&tbData);// 初始化UI控件initControls();// 设置初始大小RECT rc;GetClientRect(_hSelf, &rc);::SetWindowPos(_hSelf, nullptr, rc.left, rc.top, 300, rc.bottom, SWP_NOZORDER | SWP_NOMOVE);layoutControls(rc.right, rc.bottom);
}void AiAssistWnd::initControls()
{// 创建控件_hModelCombo = ::CreateWindowExW(0, WC_COMBOBOX, L"",CBS_DROPDOWNLIST | WS_CHILD | WS_VISIBLE | WS_TABSTOP,0, 0, 0, 0, _hSelf, (HMENU)IDC_MODEL_COMBO, _hInst, nullptr);_hInputEdit = ::CreateWindowExW(WS_EX_CLIENTEDGE, L"EDIT", L"",WS_CHILD | WS_VISIBLE | ES_MULTILINE | ES_AUTOVSCROLL | WS_VSCROLL,0, 0, 0, 0, _hSelf, (HMENU)IDC_INPUT_EDIT, _hInst, nullptr);// 使用RichEdit 4.1LoadLibraryW(L"Msftedit.dll");_hAnswerView = ::CreateWindowExW(WS_EX_CLIENTEDGE, MSFTEDIT_CLASS, L"",WS_CHILD | WS_VISIBLE | ES_MULTILINE | ES_READONLY | WS_VSCROLL | WS_HSCROLL,0, 0, 0, 0, _hSelf, (HMENU)IDC_ANSWER_VIEW, _hInst, nullptr);// 初始化字体_hFont = CreateFontW(14, 0, 0, 0, FW_NORMAL, FALSE, FALSE, FALSE,DEFAULT_CHARSET, OUT_DEFAULT_PRECIS, CLIP_DEFAULT_PRECIS,DEFAULT_QUALITY, DEFAULT_PITCH, L"Segoe UI");_hBoldFont = CreateFontW(14, 0, 0, 0, FW_SEMIBOLD, FALSE, FALSE, FALSE,DEFAULT_CHARSET, OUT_DEFAULT_PRECIS, CLIP_DEFAULT_PRECIS,DEFAULT_QUALITY, DEFAULT_PITCH, L"Segoe UI");// 应用字体SendMessageW(_hModelCombo, WM_SETFONT, (WPARAM)_hFont, TRUE);SendMessageW(_hInputEdit, WM_SETFONT, (WPARAM)_hFont, TRUE);SendMessageW(_hAnswerView, WM_SETFONT, (WPARAM)_hFont, TRUE);
}INT_PTR AiAssistWnd::run_dlgProc(UINT message, WPARAM wParam, LPARAM lParam)
{switch (message) {case WM_SIZE:if (wParam != SIZE_MINIMIZED) {RECT rc;GetClientRect(_hSelf, &rc);layoutControls(rc.right, rc.bottom);}return TRUE;case WM_COMMAND:if (HIWORD(wParam) == EN_MAXTEXT && LOWORD(wParam) == IDC_INPUT_EDIT) {handleUserInput();return TRUE;}break;case WM_NOTIFY:// 处理其他通知消息break;case WM_CTLCOLOREDIT:// 设置输入框背景色if ((HWND)lParam == _hInputEdit) {SetBkColor((HDC)wParam, RGB(255, 255, 255));return (INT_PTR)GetStockObject(WHITE_BRUSH);}break;}return DockingDlgInterface::run_dlgProc(message, wParam, lParam);
}void AiAssistWnd::layoutControls(int width, int height)
{int yPos = CONTROL_MARGIN;int nHeight = CONTROL_MARGIN;// 回答区域int answerHeight = height - 3*CONTROL_MARGIN - COMBO_HEIGHT - INPUT_HEIGHT;::MoveWindow(_hAnswerView,CONTROL_MARGIN, yPos,width - 2 * CONTROL_MARGIN, answerHeight, TRUE);yPos += CONTROL_MARGIN + answerHeight;// 模型选择框::MoveWindow(_hModelCombo,CONTROL_MARGIN, yPos,width - 2 * CONTROL_MARGIN, COMBO_HEIGHT, TRUE);yPos += COMBO_HEIGHT + CONTROL_MARGIN;// 输入框::MoveWindow(_hInputEdit,CONTROL_MARGIN, yPos,width - 2 * CONTROL_MARGIN, INPUT_HEIGHT, TRUE);yPos += INPUT_HEIGHT + CONTROL_MARGIN;
}void AiAssistWnd::updateModelList(const std::vector<std::wstring>& models)
{SendMessageW(_hModelCombo, CB_RESETCONTENT, 0, 0);for (const auto& model : models) {SendMessageW(_hModelCombo, CB_ADDSTRING, 0, (LPARAM)model.c_str());}if (!models.empty()) {SendMessageW(_hModelCombo, CB_SETCURSEL, 0, 0);}
}void AiAssistWnd::appendAnswer(const std::wstring& answer)
{// 添加时间戳SYSTEMTIME st;GetLocalTime(&st);std::wstring timestamp = std::format(L"[{:02}:{:02}:{:02}] ",st.wHour, st.wMinute, st.wSecond);// 设置富文本格式CHARFORMAT2W cf = { sizeof(CHARFORMAT2W) };cf.dwMask = CFM_COLOR | CFM_BOLD;cf.crTextColor = RGB(0, 128, 0);cf.dwEffects = CFE_BOLD;SendMessageW(_hAnswerView, EM_SETCHARFORMAT, SCF_SELECTION, (LPARAM)&cf);SendMessageW(_hAnswerView, EM_REPLACESEL, FALSE, (LPARAM)timestamp.c_str());// 恢复默认格式cf.dwMask = CFM_COLOR;cf.crTextColor = RGB(0, 0, 0);cf.dwEffects = 0;SendMessageW(_hAnswerView, EM_SETCHARFORMAT, SCF_SELECTION, (LPARAM)&cf);SendMessageW(_hAnswerView, EM_REPLACESEL, FALSE, (LPARAM)answer.c_str());// 自动滚动到底部SendMessageW(_hAnswerView, WM_VSCROLL, SB_BOTTOM, 0);
}void AiAssistWnd::clearConversation()
{if (!IsWindow(_hAnswerView))return;// 使用SETTEXTEX结构清空内容SETTEXTEX st = {ST_DEFAULT,    // 标志位1200           // 使用UTF-16编码};// 方法1：直接设置空文本（保留格式）SendMessageW(_hAnswerView, EM_SETTEXTEX, (WPARAM)&st, (LPARAM)L"");// 方法2：通过选择全部删除（更彻底）// SendMessageW(_hAnswerView, EM_SETSEL, 0, -1);   // 全选// SendMessageW(_hAnswerView, EM_REPLACESEL, 0, (LPARAM)L""); // 替换为空// 可选：重置滚动条位置SendMessageW(_hAnswerView, WM_VSCROLL, SB_TOP, 0);// 可选：清除Undo缓冲区SendMessageW(_hAnswerView, EM_EMPTYUNDOBUFFER, 0, 0);
}
void AiAssistWnd::handleUserInput()
{// 获取输入文本int len = GetWindowTextLengthW(_hInputEdit) + 1;std::wstring input(len, L'\0');GetWindowTextW(_hInputEdit, &input[0], len);input.resize(len - 1); // 移除结尾的null字符if (!input.empty()) {// TODO: 触发AI处理逻辑appendAnswer(L"Received: " + input);// 清空输入框SetWindowTextW(_hInputEdit, L"");}
}

三、主要菜单功能实现

1.定义菜单

// PluginDefinition.h
//-----------------------------------------------//
//-- STEP 2. DEFINE YOUR PLUGIN COMMAND NUMBER --//
//-----------------------------------------------//
//
// Here define the number of your plugin commands
//
const int nbFunc = 6;//
// Your plugin command functions
//
//
// 参数设置
void PluginConfig();
// 打开Ai助手窗口
void OpenAiAssistWnd();
// 解读代码
void ReadCode();
// 代码优化
void OptimizeCode();
// 添加代码注释
void AddCodeComment();
// 选中即问
void AskBySelectedText();

2.初始化菜单

// PluginDefinition.cpp
//
// Initialization of your plugin commands
// You should fill your plugins commands here
void commandMenuInit()
{//--------------------------------------------////-- STEP 3. CUSTOMIZE YOUR PLUGIN COMMANDS --////--------------------------------------------//// with function :// setCommand(int index,                      // zero based number to indicate the order of command//            TCHAR *commandName,             // the command name that you want to see in plugin menu//            PFUNCPLUGINCMD functionPointer, // the symbol of function (function pointer) associated with this command. The body should be defined below. See Step 4.//            ShortcutKey *shortcut,          // optional. Define a shortcut to trigger this command//            bool check0nInit                // optional. Make this menu item be checked visually//            );// 初始化数据g_pNppImp = new NppImp(g_nppData);// 初始化菜单ShortcutKey* pSck = new ShortcutKey[nbFunc];g_pShortcutKeys = pSck;size_t nCid = 0;setCommand(nCid, L"参数配置", PluginConfig, NULL, false); ++nCid;pSck[nCid] = { false, true, false, 'K' };setCommand(nCid, L"显示窗口", OpenAiAssistWnd, pSck + nCid, false); ++nCid;pSck[nCid] = { false, true, false, 'J' };setCommand(nCid, L"解读代码", ReadCode, pSck + nCid, false); ++nCid;pSck[nCid] = { false, true, false, 'Y' };setCommand(nCid, L"优化代码", OptimizeCode, pSck + nCid, false); ++nCid;pSck[nCid] = { false, true, false, 'Z' };setCommand(nCid, L"代码注释", AddCodeComment, pSck + nCid, false); ++nCid;pSck[nCid] = { false, true, false, 'A' };setCommand(nCid, L"选中即问", AskBySelectedText, pSck + nCid, false); ++nCid;
}

3.打开AI窗口

// PluginDefinition.cpp
// 打开Ai助手窗口
void OpenAiAssistWnd()
{// 初始化Dock窗口if (g_pAiWnd == nullptr && g_hModule != nullptr && g_nppData._nppHandle != nullptr){g_pAiWnd = new AiAssistWnd((HINSTANCE)g_hModule, g_nppData);g_pAiWnd->init();}if (g_pAiWnd){g_pAiWnd->display(true);}
}

四、效果展示

1.插件菜单

2.AI窗口

五、结语

到这里，已经在Notepad++中支持AI对话窗口了，已经有一点Cursor的AI编辑器的意思了，下一步将进一步完善功能实现，包括配置加载、配置窗口以及界面功能实现。