Assume we know nothing about VTK, what do I need to know to test this? I have gone to the website, and from the download page I selected "Windows (Installer)" = "vtk-5.0.2-win32.exe"
Having installed this NO source code seems to have been installed. Instead I have an executable and a selection of tcl files.
I am assuming you have downloaded some source code. Are you simply compiling VTK, or using it as some form of library? The fact I ended up with an executable and a command prompt suggests this is mainly a program, than an API.
What type is "ClassA"? Does alt-g take you to the declaration of this class / type? Are the VTK source files known to VA?