Qwt plot example for plotting graph using time and date as a reference

Qwt是基于Qt开发的第三方二维图形类库。网络上Qwt的资源比较少，这是楼主在Qt平台上面写的第一个Qwt例子。后续会继续上传有关Qwt的开发。-Qwt is based on the Qt graphics library developed by third Fanger Wei. Qwt resources on the network is relatively small, it is the landlord written in Qt platform above the firs

该例子实现了Qwt里面的一个简单的温度计与滚轮的功能，能够通过滚动滚轮改变温度的大小-This example implements a simple thermometer and wheel functionality Qwt inside, able to change the temperature by rolling the wheel size