volume control

[diver]

witch SDK function is used to control the main volume of my pc ?

[msaxon]

The Windows Multimedia API functions with prefix 'mixer' (i.e. mixerXXXX() functions) are used to monitor and control audio mixers in Windows.

Beware that the mixer API is not easy to understand. There are a number of third party controls available to make it easier, of which ours (MSSMixer) is one.

--
Martin

[kukukk]

        Can you (or someone else) post a little example of how to control (up/down)/mute/unmute the master volume?

[msaxon]

Thank you for the invitation but I don't have a ready-made example to hand (I always use my own ActiveX control) and it would be a lot of work to produce one.

[RobertoBozzolo]

Try this sample project I made to test waveOutxxx SDK function: it permit you to determine master volume of your audio device.

It is not entirely clear to me the interaction between this function and Windows master volume, but you may want to give a try to this sample: maybe it can help you a little.