Qt是跨平台的图形编程库，为了实现按钮 是透明显示，按照该例子可以达到很漂亮的效果。-Qt is a cross-platform graphics programming library, in order to achieve the button is transparent, in accordance with the examples, we can achieve a very nice effect.

可连接网络，输入网址能进入网站，网页记录能保存-Can be connected to the network, enter the URL to access the Site, web history can be saved