画图板！ 可改变背景颜色 调正笔头大小！-Drawing board! Can change the background color tone is written size!

matlab GUI 应用MATLAB编写带有GUI界面的简易钢琴能够调音调 调音色 有高音 低音键 -the matlab GUI applications written in MATLAB with a GUI interface easy tone tone tone tone treble bass keys on the piano

RGB模型，实现调出各种颜色，用MFC编程，用对话框控制-RGB model, to achieve a variety of tone colors, with MFC programming, using Dialog Control