本vc++程序是基于单文档程序，在菜单里可以选择绘制点、线、矩形、椭圆，并对图形进行相应的线条类型，颜色设置。-The vc++ program is based on a single document procedures, the menu can choose to draw points, lines, rectangles, ellipses, and the corresponding line type of graphics, color settings.