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Clients use KSMETHOD_BDA_GET_CHANGE_STATE to determine the current change state for a filter.
Specifying This Method
KSMETHOD with Flags member set to KSMETHOD_TYPE_READ.
Method Data
Value from the BDA_CHANGE_STATE enumerated type that identifies the current change state for the filter.
Requirements
Header: bdamedia.h (include Bdamedia.h)