[Openflipper] Object Interaction in OpenFlipper

Hi, I need to implement a plugin that updates a mesh shape according to the positions of some "handle vertices" of the mesh. Specifically, I would like to use the OpenFlipper manipulator to move a vertex V, and update all other vertices of the mesh according to the position of V using a certain algorithm. What is the proper way of implementing this in OpenFlipper? The documentation mentions about "Mouse Interface" (http://openflipper.org/Documentation/latest/a00152.html). But it says that "Mouse Move events are never passed to one of the plugins and is only used for scene navigation inside the viewers". Does this mean I should not use mouse move events to implement the update of vertices? Thanks in advance, Bailin