如何在Windows 7中控制麦克风的提升?

I am trying to control the Microphone Boost (level/(un)mute) in Windows 7 using the MIXER API in a C/C++ application, but I do not get the controls for the same. Can it be done using WASAPI? Can somebody suggest any other API to control the Microphone Boost in Windows 7?I am trying to control the Microphone Boost (le