Beyond Compare 4 便携版 添加右键菜单
一、从安装版中复制所需的 dll 文件
便携版默认不带 Shell Extension 所需的 dll 文件，可以从安装版复制：
例如，从 "C:\Program Files\Beyond Compare 4" 文件夹中找到如下文件，复制到便携版目录：
- 32位：BCShellEx.dll
- 64位：BCShellEx64.dll
二、添加 Shell Extension 到注册表
创建一个 bc4_portable_user_shell_extension.reg 文件，内容如下，注意其中的 dll 路径（分隔符需使用双反斜杠）：
reg
Windows Registry Editor Version 5.00
[HKEY_CURRENT_USER\SOFTWARE\Classes\CLSID\{57FA2D12-D22D-490A-805A-5CB48E84F12A}]
@="CirrusShellEx"
; Modify the 64-bit BCShellEx64.dll path here (use double backslash)
[HKEY_CURRENT_USER\SOFTWARE\Classes\CLSID\{57FA2D12-D22D-490A-805A-5CB48E84F12A}\InProcServer32]
@="C:\\Tools\\BCompare\\BCShellEx64.dll"
"ThreadingModel"="Apartment"
[HKEY_CURRENT_USER\SOFTWARE\Wow6432Node\Classes\CLSID\{57FA2D12-D22D-490A-805A-5CB48E84F12A}]
@="CirrusShellEx"
; Modify the 32-bit BCShellEx.dll path here (use double backslash)
[HKEY_CURRENT_USER\SOFTWARE\Wow6432Node\Classes\CLSID\{57FA2D12-D22D-490A-805A-5CB48E84F12A}\InProcServer32]
@="C:\\Tools\\BCompare\\BCShellEx.dll"
"ThreadingModel"="Apartment"
[HKEY_CURRENT_USER\SOFTWARE\Classes\*\shellex\ContextMenuHandlers\CirrusShellEx]
@="{57FA2D12-D22D-490A-805A-5CB48E84F12A}"
[HKEY_CURRENT_USER\SOFTWARE\Classes\Directory\shellex\ContextMenuHandlers\CirrusShellEx]
@="{57FA2D12-D22D-490A-805A-5CB48E84F12A}"
[HKEY_CURRENT_USER\SOFTWARE\Classes\Folder\shellex\ContextMenuHandlers\CirrusShellEx]
@="{57FA2D12-D22D-490A-805A-5CB48E84F12A}"
[HKEY_CURRENT_USER\SOFTWARE\Classes\lnkfile\shellex\ContextMenuHandlers\CirrusShellEx]
@="{57FA2D12-D22D-490A-805A-5CB48E84F12A}"
[HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Shell Extensions\Approved]
"{57FA2D12-D22D-490A-805A-5CB48E84F12A}"="Beyond Compare 4 Shell Extension"双击文件运行导入注册表，注销用户后再次登录确认右键菜单已生效。
※以上的注册表是为 Current User 添加右键菜单，无需管理员权限。如果需要为 All Users 添加，将 "HKEY_CURRENT_USER" 改为 "HKEY_LOCAL_MACHINE"
三、删除右键菜单
如删除了Beyond Compare 4 便携版，可使用以下 bc4_remove_shell_extension.reg 文件，删除右键菜单：
reg
Windows Registry Editor Version 5.00
; Remove settings in BC4 key
[-HKEY_CURRENT_USER\Software\Scooter Software\Beyond Compare 4\BcShellEx]
; Remove keys under HKEY_CURRENT_USER (current user install)
[-HKEY_CURRENT_USER\Software\Classes\CLSID\{57FA2D12-D22D-490A-805A-5CB48E84F12A}]
[-HKEY_CURRENT_USER\Software\Wow6432Node\Classes\CLSID\{57FA2D12-D22D-490A-805A-5CB48E84F12A}]
[-HKEY_CURRENT_USER\Software\Classes\*\shellex\ContextMenuHandlers\CirrusShellEx]
[-HKEY_CURRENT_USER\Software\Classes\Directory\shellex\ContextMenuHandlers\CirrusShellEx]
[-HKEY_CURRENT_USER\Software\Classes\Folder\shellex\ContextMenuHandlers\CirrusShellEx]
[-HKEY_CURRENT_USER\Software\Classes\lnkfile\shellex\ContextMenuHandlers\CirrusShellEx]
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Shell Extensions\Approved]
"{57FA2D12-D22D-490A-805A-5CB48E84F12A}"=-
; Remove keys under HKEY_LOCAL_MACHINE (install for all users)
[-HKEY_LOCAL_MACHINE\Software\Classes\CLSID\{57FA2D12-D22D-490A-805A-5CB48E84F12A}]
[-HKEY_LOCAL_MACHINE\Software\Wow6432Node\Classes\CLSID\{57FA2D12-D22D-490A-805A-5CB48E84F12A}]
[-HKEY_LOCAL_MACHINE\Software\Classes\*\shellex\ContextMenuHandlers\CirrusShellEx]
[-HKEY_LOCAL_MACHINE\Software\Classes\Directory\shellex\ContextMenuHandlers\CirrusShellEx]
[-HKEY_LOCAL_MACHINE\Software\Classes\Folder\shellex\ContextMenuHandlers\CirrusShellEx]
[-HKEY_LOCAL_MACHINE\Software\Classes\lnkfile\shellex\ContextMenuHandlers\CirrusShellEx]
[HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Shell Extensions\Approved]
"{57FA2D12-D22D-490A-805A-5CB48E84F12A}"=-※以上的注册表是为 Current User 以及 All Users 添加的右键菜单均删除。若当前用户无需管理员权限，可将后半段的 "HKEY_LOCAL_MACHINE" 的部分删除后再导入 .reg 文件。
（完）