Get Vertices of a Mesh without unsave code

In the wiki a source code how to get some informations of a mesh.
[url=http://www.ogre3d.org/wiki/index.php/Raycasting_to_the_polygon_level_]http://www.ogre3d.org/wiki/index.php/Raycasting_to_the_polygon_level_(Mogre)#GetMeshInformation

Unfortunately it uses unsave code and I don't want to use this.
I just need the vertex positions of a Mesh (for creating a convex hull).
Is there a way to do it?

well,i must tell you that you can't,i already created convex hulls with Mogre and Managed PhysX and it works fine,without use unsafe wouldn't be possible
because HardwareVertexBuffer.Lock(LockOptions) returns Void*,that can be converted into IntPtr using .ToPointer(),HardwareIndexBuffer Lock functions does the same,if you find any way let me know..

Hope it helps,
Cheers