Brew MP 1.0.2
This function is a shortcut for calling InsertAt with an offset of 0.
In order to properly sequence multiple transitions to create some special
effect, it is recommended that all required transitions be added to a
manager before it is started or inserted within another active transition
Several other functions are available to add transitions at special offsets.
[in] Pointer to the ITransitionMgr interface object.
[in] Specifies the Transition object being added