How to enable open Item with single click?

1. Open notepad
2. Copy below code in notepad:

Windows Registry Editor Version 5.00
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer]
ShellState"=hex:24,00,00,00,13,a8,01,00,00,00,00,00,00,00,00,00,00,00,00,00,\
01,00,00,00,0d,00,00,00,00,00,00,00,02,00,00,00


3. Save file as OpenClick.Reg anywhere on your system
4. Double click on it to run it

This will enable single click to open item. Or you can use control panel to do this (Simple way ;) ).