Qt下的CPU绘图，基于Qwt强大的图形库-Qt CPU drawing, based on the the Qwt powerful graphics library

qwt vs2010 compline.Qwt is an extension to the libraries of the Qt Project. The Qwt library contains widgets and components which are primarily useful for technical and scientifical purposes. It includes a 2-D plotting widget, different

qwt波形描点曲线，可以进行4条曲线描绘，分别以不同颜色进行显示-Qwt waveform curve, can be described as 4 curves, respectively, in different colors to display

QWT进行柱状图的描绘，横纵坐标分别显示相应内容-QWT histogram descr iption, horizontal and vertical coordinates respectively display the corresponding content