这个可以通过点击菜单栏里的绘图的多线程画图，可以在窗口里画出三个长条图形。-This can be by clicking on the menu bar of the drawing, multi-threaded drawing, you can draw three long strips of window graphics.

在单文档框中进行绘图，自由画图，画直线，画圆与设置线的各种属性-Single document box drawing, free drawing, draw a straight line, circle and set the various properties of the line

MyDraw.rar基本功能：菜单栏有绘图按钮，点击后可以选择点、线、椭圆、矩形。然后便可以画出相应的图形。-The basic function of MyDraw.rar: the menu bar drawing button, click can select the point, line, rectangle, ellipse. Then we can draw the corresponding graphics.