一个简单点的VC++Windows系统 音量控制程序，打开后在系统托盘处显示图标，并可以点右键设置程序和退出程序。音量控制程序的功能主要是通过热键来完成-A simple point of VC++ Windows system volume control program, opened in the system tray icon, and you can right click set up and exit the program. The main function of the v