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IMMDevice::GetState

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IMMDevice::GetState

The GetState method retrieves the current device state.

HRESULT GetState(
  DWORD  *pdwState
);

Parameters

pdwState

[out]  Pointer to a DWORD variable into which the method writes the current state of the device. The device-state value is one of the following DEVICE_STATE_XXX constants:

DEVICE_STATE_ACTIVE

DEVICE_STATE_DISABLED

DEVICE_STATE_NOTPRESENT

DEVICE_STATE_UNPLUGGED

Return Value

If the method succeeds, it returns S_OK. If it fails, possible return codes include, but are not limited to, the values shown in the following table.

Return code Description
E_POINTER Parameter pdwState is NULL.

Requirements

Client: Windows Vista

Header: Include Mmdeviceapi.h.

See Also

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