I guessed this based on the name of the registry setting and its location in the registry.
However, let me be more specific. We have volume indicators in our application that that we’d prefer to use instead of the box that pops up in the upper right side of the screen when the volume or mute status is changed.
Also, it pops up when there’s really not a change to Media Center’s volume. For example, we have an music based application that can be controlled with our MCE plugin. We use Media Foundation to control the volume of OUR application. The “master device volume” nor the “media center application volume” is changed but the mce popup still comes up over our application. This confuses the user because the volume indicator in the pop up is not changing when the audio that they are listening to in our app is changing.
The other issue is that the “media center’s volume control” appears to be tied to the audio device’s main volume. Instead of the “media center application volume”. I need to look into this a bit more. I'm sure there might be a good reason for this in some cases but I'd like it to be a setting if possible.
If these issues were addressed and the volume display indicator ONLY popped up when the “media center application volume” is changed we would not be looking to disable it.
Otherwise we would just like to turn off this volume indicator and manage the user notification with a combination of our foreground and our background MCE applications. (Our solution is a part of a dedicated MCE system.)