基于VC++的程序，绘制连续线条，绘制扇形线条，位图画刷，透明画刷的功能实现，在此代码中包含的多项功能实现，其中个别已被注释，读者只需解除注释即可实现功能。-Draw fan-shaped lines based on program of VC++, draw a continuous line, the brush, transparent functions brush, this code contains a number of functions, which the individ