用Qt写得曲线显示控件和使用的小例子，使用简单只需按顺序给定X轴和Y轴的数值-Written with the Qt controls and use of the curve shows a small example, just by using a simple sequence of a given X and Y axis values

这是一个修改了scribble的样例，仅仅是多了个小功能。-an example that has edited "scribble"。 a small function added.

这是一个用QT做的画板！！this is a paint program.if you want to study how to make it ,this is a good example.-this is a paint program.if you want to study how to make it ,this is a good example.

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