Is a standard screen capture program code, simple and clear, easy

代码说明：

是一个屏幕捕获程序标准代码,简单明了,易用易懂,功能强大,里面还有一套功能强大的控件库-Is a standard screen capture program code, simple and clear, easy-to-use easy-to-understand and powerful, there is also a powerful Control Library