GDI+ 矢量绘图学习第6版， 支持缩放、 移动、绘制。（学习方向 容易扩展图形 , 使用现实世界的度量单位，无级缩放，显微查看和精细编辑图形)-GDI+ vector graphics to learn version 6 support zoom, move, draw. (Learning the direction of easy expansion of graphics, the use of real-world unit of measure, stepless zoom, mi