vc开发(VS2005下也可使用)的系统声音调节程序,通过滑动条调节(设置)系统音量.很好的学习程序,找了好几个就这个可以正常使用.-vc development (VS2005, may also use) the system sounds adjustment program, through the slider adjustment (setting) the system volume. good learning process, to find a number on this