Setting last character on screen (without scrolling enabled)

[Michael Bohn]

Assume you have a NCurses Window (could be a subwindow) with dimensions ROWS 
and COLS. How do I set the character at ROWS-1 and COLS-1. 
If I use waddstr at this position with one character it doesn't work (throws a 
user exception). 
I assume this is because the cursor is moved to a position outside the window?