这是个特殊的能显示网络流量的按钮控件，用起来非常方便，只要创建按钮控件，然后再把控件映射到这里的类里，具体可参考里面的程序-This is a special showing of the button control network traffic, very convenient to use, as long as the button control to create and then control is mapped to the category here, the specif