如何使用Win32 API实现菜单项左功能名右快捷键的布局

我希望实现菜单项左侧显示功能名称，右侧显示键盘快捷键的效果，示例如下：

以下是WndProc函数中WM_CREATE分支的原始代码：

case WM_CREATE: {
    HMENU hMenu = CreateMenu();

    HMENU hMenuFile = CreateMenu();
    HMENU hMenuEdit = CreateMenu();
    HMENU hMenuFormat = CreateMenu();
    HMENU hMenuHelp = CreateMenu();

    AppendMenu(hMenu, MF_POPUP, (UINT_PTR)hMenuFile, _T("File"));
    AppendMenu(hMenu, MF_POPUP, (UINT_PTR)hMenuEdit, _T("Edit"));
    AppendMenu(hMenu, MF_POPUP, (UINT_PTR)hMenuFormat, _T("Format"));
    AppendMenu(hMenu, MF_POPUP, (UINT_PTR)hMenuHelp, _T("Help"));

    AppendMenu(hMenuFile, MF_STRING, 1, _T("New... (Ctrl+N)"));
    AppendMenu(hMenuFile, MF_SEPARATOR, NULL, NULL);
    AppendMenu(hMenuFile, MF_STRING, 1, _T("Open... (Ctrl+O)"));
    AppendMenu(hMenuFile, MF_STRING, 1, _T("Save (Ctrl+S"));
    AppendMenu(hMenuFile, MF_STRING, 1, _T("Save as... (Ctrl+Shift+S)"));
    AppendMenu(hMenuFile, MF_SEPARATOR, NULL, NULL);
    AppendMenu(hMenuFile, MF_STRING, 1, _T("Close... (Alt+F4)"));

    AppendMenu(hMenuEdit, MF_STRING, 1, _T("Cut (Ctrl+X)"));
    AppendMenu(hMenuEdit, MF_STRING, 1, _T("Copy (Ctrl+C)"));
    AppendMenu(hMenuEdit, MF_STRING, 1, _T("Paste (Ctrl+V)"));

    AppendMenu(hMenuFormat, MF_UNCHECKED, 1, _T("Word wrap"));
    AppendMenu(hMenuFormat, MF_STRING, 1, _T("Font..."));

    AppendMenu(hMenuHelp, MF_STRING, 1, _T("About..."));

    SetMenu(hWnd, hMenu);
    break;
}

修正方案 #

Windows菜单默认支持用**制表符\t**分隔菜单项文本和快捷键，系统会自动将快捷键部分右对齐显示，无需手动排版。同时需要修正代码中的两个问题：

1. 菜单项ID重复（全部为1），会导致后续消息处理无法区分不同操作；
2. "Save"项的文本缺少右括号。

修正后的代码如下：

// 定义菜单项ID常量，方便后续消息处理
#define ID_FILE_NEW     1001
#define ID_FILE_OPEN    1002
#define ID_FILE_SAVE    1003
#define ID_FILE_SAVE_AS 1004
#define ID_FILE_CLOSE   1005

#define ID_EDIT_CUT     2001
#define ID_EDIT_COPY    2002
#define ID_EDIT_PASTE   2003

#define ID_FORMAT_WRAP  3001
#define ID_FORMAT_FONT  3002

#define ID_HELP_ABOUT   4001

case WM_CREATE: {
    HMENU hMenu = CreateMenu();

    HMENU hMenuFile = CreateMenu();
    HMENU hMenuEdit = CreateMenu();
    HMENU hMenuFormat = CreateMenu();
    HMENU hMenuHelp = CreateMenu();

    AppendMenu(hMenu, MF_POPUP, (UINT_PTR)hMenuFile, _T("File"));
    AppendMenu(hMenu, MF_POPUP, (UINT_PTR)hMenuEdit, _T("Edit"));
    AppendMenu(hMenu, MF_POPUP, (UINT_PTR)hMenuFormat, _T("Format"));
    AppendMenu(hMenu, MF_POPUP, (UINT_PTR)hMenuHelp, _T("Help"));

    // 使用\t分隔功能名和快捷键
    AppendMenu(hMenuFile, MF_STRING, ID_FILE_NEW, _T("New...\tCtrl+N"));
    AppendMenu(hMenuFile, MF_SEPARATOR, NULL, NULL);
    AppendMenu(hMenuFile, MF_STRING, ID_FILE_OPEN, _T("Open...\tCtrl+O"));
    AppendMenu(hMenuFile, MF_STRING, ID_FILE_SAVE, _T("Save\tCtrl+S"));
    AppendMenu(hMenuFile, MF_STRING, ID_FILE_SAVE_AS, _T("Save as...\tCtrl+Shift+S"));
    AppendMenu(hMenuFile, MF_SEPARATOR, NULL, NULL);
    AppendMenu(hMenuFile, MF_STRING, ID_FILE_CLOSE, _T("Close...\tAlt+F4"));

    AppendMenu(hMenuEdit, MF_STRING, ID_EDIT_CUT, _T("Cut\tCtrl+X"));
    AppendMenu(hMenuEdit, MF_STRING, ID_EDIT_COPY, _T("Copy\tCtrl+C"));
    AppendMenu(hMenuEdit, MF_STRING, ID_EDIT_PASTE, _T("Paste\tCtrl+V"));

    AppendMenu(hMenuFormat, MF_UNCHECKED, ID_FORMAT_WRAP, _T("Word wrap"));
    AppendMenu(hMenuFormat, MF_STRING, ID_FORMAT_FONT, _T("Font..."));

    AppendMenu(hMenuHelp, MF_STRING, ID_HELP_ABOUT, _T("About..."));

    SetMenu(hWnd, hMenu);
    break;
}

补充说明 #

• 制表符\t是Windows菜单实现快捷键右对齐的标准方式，系统会自动处理间距，比手动添加空格更可靠；
• 定义唯一的菜单项ID是必要的，后续处理WM_COMMAND消息时，才能根据ID判断用户点击了哪个菜单项；
• 如果需要为快捷键注册全局热键，还需要调用RegisterHotKey函数，但菜单本身显示快捷键只需要用\t分隔即可。

内容的提问来源于stack exchange，提问作者TeenProgrammer