自己写的网吧专用的挂机锁源代码，彻底禁止一切Window热键。包括Ctrl+Alt+Del. 稍加改进即可以成为自己专用的挂机锁工具。-The Internet to write their own dedicated lock hang up the source code, a complete ban on all Window Hotkey. Including Ctrl+ Alt+ Del. A little improvement that could be hanging up