Number of Vtables in derived:base class

Hi all,

The below example shows a simple virtual function implementation.Where
only base class-"Window" is having a virtual function."Any class
having virtual function a Vtable will be created to that class".

Confusion:
Now I am inheriting the base class-window
class CommandButton : public Window

Now I would like know does for derived class "CommandButton" another
Vtable will be created or not??As you can see there are no virtual
functions in derived class.

class Window // Base class for C++ virtual function example
     {
       public:
          virtual void Create() // virtual function for C++ virtual
function example
          {
               cout <<"Base class Window"<<endl;
          }
     };

     class CommandButton : public Window
     {
       public:
          void Create()
          {
              cout<<"Derived class Command Button - Overridden C++
virtual function"<<endl;
          }
     };

     void main()
     {
         Window *x, *y;

         x = new Window();
         x->Create();

         y = new CommandButton();
         y->Create();
     }

The output of the above program will be,
                 Base class Window
                 Derived class Command Button

Thanks,
RAGHU