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IMMDevice Interface

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IMMDevice Interface

The IMMDevice interface encapsulates the generic features of a multimedia device resource. In the current implementation of the MMDevice API, the only type of device resource that an IMMDevice interface can represent is an audio endpoint device.

A client can obtain an IMMDevice interface from one of the following methods:

For more information, see IMMDeviceCollection Interface.

After obtaining the IMMDevice interface of an audio endpoint device, a client can obtain an interface that encapsulates the endpoint-specific features of the device by calling the IMMDevice::QueryInterface method with parameter iid set to REFIID IID_IMMEndpoint. For more information, see IMMEndpoint Interface.

For code examples that use the IMMDevice interface, see the following topics:

IMMDevice inherits from the IUnknown interface. In addition to the methods inherited from IUnknown, IMMDevice supports the following methods.

Method Description
Activate Creates a COM object with the specified interface.
GetId Gets a string that identifies the device.
GetState Gets the current state of the device.
OpenPropertyStore Gets an interface to the device's property store.

Requirements

Client: Windows Vista

Header: Include Mmdeviceapi.h.

See Also

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