在学习mfc的过程中，我做了一个简单的画图程序（sin曲线），并且可以可变振幅，长度，可频率，状态栏能显示时间，鼠标坐标-Mfc in the learning process, I make a simple drawing program (sin curve) and can be of variable amplitude, length, may be the frequency of the status bar can display time, the mouse coordin