此程序主要在嵌入式开发板上开发一款虚拟键盘输入程序，模拟windows8.1虚拟键盘，只能实现英文输入，中文输入需要字库，做软件上功能添加，复杂麻烦。-This program mainly in the embedded development board developed a virtual keyboard input program, simulation windows8.1 virtual keyboard, can only achieve English input, Chin