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Minimum system volume RRS feed

  • Question

  • For an application I need a possibility to set a minimum system volme which cannot changed by a normal user. Is that possible by seeting a registry value or some other system modification? OS is Windows CE5.0  with CF2.0

    Thanks in advance!

    Tuesday, October 20, 2015 7:52 AM

All replies

  • What is a "minimum system volume"?

    Are you developing the OS?



    Bruce Eitman (eMVP)
    Senior Engineer
    Bruce.Eitman AT Eurotech DOT com
    My BLOG http://geekswithblogs.net/bruceeitman
    I work for Eurotech

    Tuesday, October 20, 2015 12:49 PM
    Moderator
  • Hi Mitcher78,

    Further to what Bruce asked, take a look at Memory Management in CE 5 vs CE 6. You can see that the memory layout is defined when the device is created. If you are the creator of the CE 5 device then you have ultimate control of your memory map but if the device is already created you will have to live within the structure the device manufacturer defined.

    Can you give us a better understanding of the problem you are trying to solve?

    Sincerely,

    IoTGirl

    Tuesday, October 20, 2015 4:27 PM
    Moderator
  • Audio volume?

    Paul T.

    Tuesday, October 20, 2015 5:18 PM
  • We use a prebuild image and I want to define a minimum audio volume which cannot be changed by the user. Warning sounds generated by the software must not be disabled so I need a minimum audio volume.

    Thanks a lot for your help!

    Wednesday, October 21, 2015 6:04 AM
  • There are several ways (that I can think of) to support your request for controlling a minimum audio volume:

        • Ask your hardware vendor to add support for this new feature, they can modify the audio driver to limit the minimum audio volume level.
        • Don't allow your user to get to the control panel, but instead control how they change the volume level (see: http://geekswithblogs.net/BruceEitman/archive/2008/12/16/windows-ce-adjusting-audio-volume.aspx)
        • Monitor the audio volume in the background, if it gets set to a very level that you think is too low, raise it.
        • Before playing one of your warning sounds, change the audio volume level to some specific level, play the warning, then set the volume back to the user's preferred level.
  • BTW, the word "volume" is also used in the context of file systems. 


  • Bruce Eitman (eMVP)
    Senior Engineer
    Bruce.Eitman AT Eurotech DOT com
    My BLOG http://geekswithblogs.net/bruceeitman
    I work for Eurotech

Wednesday, October 21, 2015 1:30 PM
Moderator
  • Registry entry to watch (HKEY_CURRENT_USER\ControlPanel\Volume): https://msdn.microsoft.com/en-us/library/aa909820.aspx

    Wednesday, October 21, 2015 4:13 PM
    Moderator