qt中的第三方插件qwt画实时曲线点的代码，在自己的redhat9，qt4.3.2下以编译成功，文件里面有显示的相关图片.-qt of third-party plug-ins in real-time curve painting qwt point code, in their own redhat9, qt4.3.2 compiled successfully under, the document shows that there are relevant picture.