Sets blending event keys for the specified animation track.
D3DXEVENTHANDLE KeyPriorityBlend( FLOAT NewBlendWeight, DOUBLE StartTime, DOUBLE Duration, D3DXTRANSITION_TYPE Transition );
Event handle to the priority blend event. NULL is returned if one or more of the input parameters is invalid, or no free event is available.
The animation controller blends in three phases: low priority tracks are blended first, high priority tracks are blended second, and then the results of both are blended.
Header: Declared in D3dx9anim.h.