[vtkusers] Help: Interaction Using vtkRenderWindowInteractor

[#LIU QIANG#]

Hi all,

I'm new to VTK. In my C++ program, I want to interact with the vtk window. I know I can use vtkRenderWindowInteractor for this purpose. But I don't know how to get the event and how to handle it. 

For example, I want to get the position of the mouse, and impliment a function, A( ),  when the left button double clicks the window. How can I implement this?

Thanks & Best Regards,
Qiang