As far as we know, there is no documented way or API to change system-wide volume on WP8, however...
It looks like author of the Quiet Hours application found an udocumented way to do this! Probably he is using ISimpleAudioVolume interface but I really don't know...
Any thoughts?
P.S. Guys with interop-unlocked handsets: could you please install the app and download/post the executable/assembly?
It looks like author of the Quiet Hours application found an udocumented way to do this! Probably he is using ISimpleAudioVolume interface but I really don't know...
Any thoughts?
P.S. Guys with interop-unlocked handsets: could you please install the app and download/post the executable/assembly?
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