|Microsoft DirectX 9.0|
The Active method creates a worker thread that pulls data from the output pin. This method also commits the allocator.
This method takes no parameters.
Returns an HRESULT value. Possible values include the following.
|E_UNEXPECTED||The pin connection was not established correctly.|
|E_FAIL||Could not create the thread, or the thread already exists.|
Call this method when the owning filter becomes active. (If your input pin derives from CBasePin, override the CBasePin::Active method.)
Before calling this method, call the CPullPin::Connect method to establish the connection with the output pin.