Audio Mixer Messages

The Audio Mixer messages for the WAV_IOControl function are defined in the following table.

Programming element Description
MXDM_CLOSE Requests a user-mode mixer driver to close the specified device instance.
MXDM_GETCONTROLDETAILS Requests a user-mode mixer driver to return detailed information about the specified control on the specified audio line.
MXDM_GETDEVCAPS Requests a user-mode mixer driver to return capabilities information about the specified device.
MXDM_GETLINECONTROLS Requests a user-mode mixer driver to return information about specified controls connected to a specified audio line for the specified device.
MXDM_GETLINEINFO Requests a user-mode mixer driver to return information about a specified audio line for the specified device.
MXDM_GETNUMDEVS Requests a user-mode mixer driver to return the number of device instances that it supports.
MXDM_INIT Message received by the user-mode mixer driver's mxdMessage function while the driver is being installed.
MXDM_OPEN Requests a user-mode mixer driver to open an instance of the specified device.
MXDM_SETCONTROLDETAILS Requests a user-mode mixer driver to set information about specified controls connected to a specified audio line for a specified device.

See Also

Audio Mixer Reference | Audio Mixer Structures

 Last updated on Tuesday, May 18, 2004

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