用Qt实现一个基本的画图小工具，能画一些简单的图形，帮且了解QPainter的使用。-Achieved with a basic drawing Qt widget that can draw some simple graphics to help and understand the use of QPainter.

wrf后期画图软件，是最简单一款，如果个人需要需求可以选择，后期出图也基本可以满足需求-wrf post-drawing software, is a simple, if you need to demand personal choice, later the figure also meet the basic needs

使用qt实现了基本的画图功能，对程序有详细的讲解，不需修改就能直接运行。-Use qt realize basic drawing functions, a detailed explanation of the procedure, without modification to run directly.