Deleting an Interrupt Object
[This topic applies to UMDF 1.x.]
If the driver creates an interrupt object by calling IWDFDevice3::CreateInterrupt, the driver does not need to delete the interrupt object. The framework deletes the interrupt object automatically because the interrupt object is a child object of the framework device object.
The framework uses the following rules:
Optionally, the driver can call IWDFObject::DeleteWdfObject to delete an interrupt object at any time. Because a driver cannot create a new interrupt object outside of OnDeviceAdd or OnPrepareHardware, manual deletion of the object should not be used unless the driver must remove the object before the framework deletes it.