Switches to a window
[C++]
static int Activate(
   const char* window_text,
   unsigned short pane_num = 1
);
Text specifying the name of a window to switch to: for example, "Book1".
Pane number within window.
Zero if the function has been called successfully; non-zero
            if the function could not be called.
            See Error codes for a list
            of return values.
See the Microsoft Excel on-line Help for full details about
            this function.
Header: xlfuncs.h