画图程序，实现了划线，圆，椭圆，方形，并且解决了窗口变化后所画图形消失的问题，并有打印功能-drawing procedures, a line, circle, oval, square, and the resolution of the window changes to the painting disappeared graphics, and printing functions

VB票据设计并打印的软件，软件用到了绘图的一些知识，比如可以在新建立的文档中画直线、斜线、矩形、圆形等，另外还可锁定对象、可设置颜色，可设定文字的字体、字号、对齐方式、增加图像、打印预览及页面设置等功能。-VB notes to design and print software, the software used some knowledge of drawing and painting line, slash, rectangle, circle, etc., such as in th