IDirect3DViewport::Release

ULONG Release();

Decreases the reference count of the Direct3DViewport object by 1. This method is part of the IUnknown interface inherited by Direct3DViewport.

·Returns the new reference count of the object.

The Direct3DViewport object deallocates itself when its reference count reaches 0. Use the IDirect3DViewport::AddRef method to increase the reference count of the object by 1.