WGL_NV_DX_interop? example?

Has anyone had success using the extension WGL_NV_DX_interop?

i coded a sample similar to the one in the extension’s description… I tried to use it but i had some problems between the function calls: wglDXLockObjectsNV and wglDXUnLockObjectsNV … nothing happened when i tried to render from opengl on directx’s render target.

Anyone know where I can find a workable example?