Until we get a proper method or solution we can use this as a workaround.
(VB6 source code and compiled DLL) - 24KB
GetRhino3dmProperties (VB6 source +
dll + opennurbs dll) - 2MB
To set a nice shaded perspective preview image modify included script as needed
The ecncGetRhinoInfo.dll must be placed next to the opennurbs_vc60.dll
(Rhino3d/system dir) and on load you need to set current directory to
rhino3d/system dir, for the details take a look the the GetRhino3dmProperties
source or just keep the
in the same folder!