IWMRegisteredDevice::IsOpened method (wmsdkidl.h)

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The IsOpened method retrieves the open status of the device. An open device is ready to receive media data.

Syntax

HRESULT IsOpened(
  [out] BOOL *pfOpened
);

Parameters

[out] pfOpened

Address of a variable that receives the open status of the device. TRUE indicates that the device is open.

Return value

The method returns an HRESULT. Possible values include, but are not limited to, those in the following table.

Remarks

To receive data, a device must be opened, validated, and approved.

You can use this method to find out whether the device is open. To open the device call Open.

The device is valid only if proximity detection has been performed on it within the past 48 hours. You can check the validity of the device by calling IsValid. For more information, see the IWMProximityDetection interface.

Call the IsApproved method to determine whether the device is approved. To approve the device, call the Approve method.

Requirements

See also

IWMRegisteredDevice Interface