方法一（推薦）
把以下代碼，復制到SublimeText3的安裝目錄，然后重命名為：sublime_addright.inf，然后右擊安裝就可以了。
PS：重命名文件之前，需要先在工具--文件夾選項，查看中，把隱藏已知文件類型的擴展名前邊的復選框不勾選。
[Version]
Signature="$Windows NT$"
[DefaultInstall]
AddReg=SublimeText3
[SublimeText3]
hkcr,"\shell\SublimeText3",,,"用 SublimeText3 打開"
hkcr,"\shell\SublimeText3\command",,,"""%1%\sublime_text.exe"" ""%%1"" %%"
hkcr,"Directory\shell\SublimeText3",,,"用 SublimeText3 打開"
hkcr,"\shell\SublimeText3","Icon",0x20000,"%1%\sublime_text.exe, 0"
hkcr,"Directory\shell\SublimeText3\command",,,"""%1%\sublime_text.exe"" ""%%1"""
方法二
把以下代碼，復制到SublimeText3的安裝目錄，然后重命名為：sublime_addright.reg，然后雙擊就可以了。
PS:需要把里邊的Sublime的安裝目錄，替換成實際的Sublime安裝目錄。
Windows Registry Editor Version 5.00
[HKEY_CLASSES_ROOT*\shell\SublimeText3]
@="用 SublimeText3 打開"
"Icon"="D:\Program Files\Sublime Text 3\sublime_text.exe,0"
[HKEY_CLASSES_ROOT*\shell\SublimeText3\command]
@="D:\Program Files\Sublime Text 3\sublime_text.exe %1"
[HKEY_CLASSES_ROOT\Directory\shell\SublimeText3]
@="用 SublimeText3 打開"
"Icon"="D:\Program Files\Sublime Text 3\sublime_text.exe,0"
[HKEY_CLASSES_ROOT\Directory\shell\SublimeText3\command]
@="D:\Program Files\Sublime Text 3\sublime_text.exe %1"