利用GDI+技术实现的绘图小程序，可使用渐变色画刷、选择线性渐变和路径渐变，实现了基本的直线、椭圆、矩形、三角形以及自由画笔。-The use of GDI+ graphics technology to achieve a small program, you can use gradient color brush, select the linear gradient and path gradient to achieve the basic lines, ovals, rectangl