把以下代码，复制到SublimeText3的安装目录（一般位于C:\Program Files\Sublime Text 3），然后重命名为：sublime_addright.inf，然后右击安装就可以了。

[Version]
Signature="$Windows NT$"

[DefaultInstall]
AddReg=SublimeText3

[SublimeText3]
hkcr,"*\\shell\\SublimeText3",,,"用 SublimeText3 打开"
hkcr,"*\\shell\\SublimeText3\\command",,,"""%1%\sublime_text.exe"" ""%%1"" %%*"
hkcr,"Directory\shell\SublimeText3",,,"用 SublimeText3 打开"
hkcr,"*\\shell\\SublimeText3","Icon",0x20000,"%1%\sublime_text.exe, 0"
hkcr,"Directory\shell\SublimeText3\command",,,"""%1%\sublime_text.exe"" ""%%1"""

参考网站：

• 将Sublime Text3添加到右键菜单中