C++ Select Mesh Vertices

I am following this tutorial by @dale , but it seems to be outdated: Moving Mesh Vertices with C/C++ (rhino3d.com)
What is the right way to select multiple mesh vertices?

I tried to change that to this, but there is no casting to meshvertex:

You probably need to get the MeshComponentRef from the object reference like so:

const ON_MeshComponentRef* mcRef = gv.Object(0).MeshComponentRef();



Then, in that reference you have access to the type of component (vertex) the mesh and the index of the selected vertex in the vertices array.


Worked, thank you very much.

Id can be retrieved like this:
int id = mcRef->VertexIndex();

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