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What gets triggered when sound device master volume changes?

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Matt Brown - identify

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Jun 30, 2006, 1:31:08 PM6/30/06
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Hello,

I'm looking to be able to monitor something with a VB program that will
trigger when sound device master volume changes.

I'd like to avoid massive querying (repeatedly querying the sound
volume); and was hoping that there would be something I could watch,
that when it was triggered it means "Sound Device Volume has changed!"


I'm looking to compensate for the Logitech MX5000 keyboard's sound
touch-pad "slider" that only adjusts the volume 20% with one "swipe."


Thanks!

Matt

Bob Masta

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Jul 1, 2006, 8:07:27 AM7/1/06
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On 30 Jun 2006 10:31:08 -0700, "Matt Brown - identify"
<Matthe...@gmail.com> wrote:

The thing you are looking for is the MM_MIXM_CONTROL_CHANGE
message. Look this up on MSDN for the details, but I believe you
will need to open the mixer and specify a callback window where
the message will be sent. You'll get messages from all mixer
controls, but lParam will tell you the ID of the control being
changed.

Best regards,


Bob Masta
dqatechATdaqartaDOTcom

D A Q A R T A
Data AcQuisition And Real-Time Analysis
www.daqarta.com
Home of DaqGen, the FREEWARE signal generator

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