实际上本程序是一个画笔绘图程序，有21个画图小工具，每个工具都有tooltiptext，你可以看帮助可以打开mapinfo的table文件，数据库是使用sql2000个人版，本版本只保存几个简单的点线面数据-This program is actually a pen drawing program, there are 21 small drawing tools, each tools have tooltiptext the, you can see the help table file

简单的实现一个汽车仪表盘的功能，使用Qt 的绘图工具，主要就是图像的旋转，和旋转后的位移问题-Simple implementation of a car dashboard feature that uses Qt drawing tools, mainly rotating the image, and displacement problems rotated

参考Windows 附件中的绘图工具，使用java语言设计并实现一个简单的绘图板，实现各类基本图形的编辑，文件的保存和读取功能。(Referring to the drawing tools in Windows, a simple drawing board is designed and implemented by using java language, which can realize the editing of various basic graphics, the preser