简单音乐编辑器，directx 9 开发，现只有piano一种乐器，可以敲击屏幕六边形来输入音乐音阶-Simple music editor, directx 9 development now the only piano a musical instrument, you can tap the screen hexagon to enter the music scale

基于Win32使用OpenGL绘制三角形、矩形、六边形等稍复杂的图形；-Based on Win32 using OpenGL to draw a triangle, rectangle, hexagon, slightly more complex graphics

This program calculate the parameter of two different hexagon with different size.