tags:

views:

115

answers:

2
+2  Q: 

Controlling the volume of other applications

I am trying to make an app that controls the volume of another process using the Windows 7 Audio API.

What I'm looking for is the ISimpleAudioVolume for the session used by the other process.

I have tried using the IAudioSessionEnumerator but it will only give me the IAudioSessionControl2 of the session. Using the IAudioSessionControl I have managed to receive notifications when I change the volume through sndvol but not change it myself.

I have also tried using GetSimpleAudioVolume() from IAudioSessionManager but it will only give me sessions within the current process.

How do you do it? It should be possible since sndvol is doing this.

A: 

There is an MSDN forum question and Blog Post about this very question. Hope this helps.

0A0D  2009-11-24 17:05:09
I can't find anything about my problem in the links. The blog is about controlling the master volume and the forum thread is about changing volumes of input devices? Am I missing something?
Anton Hansson  2009-11-24 19:41:06
Well, I am going to guess that Windows 7 keeps you in a sandbox and will not let you modify the volume of other apps. The alternative (posted above) is that you modify the master volume. It will modify the volume for ALL apps, but that's the closest I could find.
0A0D  2009-11-25 02:36:30
A: 

According to Larry Osterman

"There is no publicly documented mechanism for doing what you're trying to do."

Anton Hansson  2009-12-08 17:54:40

related questions

Exposing nested arrays to COM from .NET
How do you unit-test code that interacts with and instantiates third-party COM objects?
Windows Server 2008: COM error: 0x800706F7 - The stub received bad data
Sample code for using IBM's PCOMM in C# o write an as400 screenscraper
Expose an event handler to VBScript users of my COM object
MapPoint 2009 Load Performance
Managed OleDB provider written in C#
What is the best source for information on COM error codes?
How do I return an array of strings from an ActiveX object to JScript
Maintain the correct version for a COM dll referenced in a .NET project
How to do a simple mail merge in OpenOffice
How do you display a dialog from a hidden window application?
Has .NET made raw COM and DCOM programming redundant ?
COMException "Library not registered." while using System.DirectoryServices
What do I need to do to implement an "out of proc" COM server in C#?
How to implement Type-safe COM enumerations in Delphi ?
Notification of drop in drag-drop in Windows
Sharepoint COMException 0x81020037
How do I unregister COM dlls initially added with RegSvr32 when the /u arg doesn't work?
Delphi and COM: TLB and maintenance issues
Is there a method for handling errors from COM objects in RDML?
How to register COM from VS Setup project?
C++ Problems with #import of .NET out-of-proc server.
How to trace COM objects exceptions?
Unload a COM control when working in VB6 IDE