Box-Drawing characters not displaying corrrectly

[FalterrisAunvre]

I'm using the PDCurses library and running Win7

Whenever I use the addch() group of functions, the box drawing characters
(code page 437) display fine, but when I add them to a char array, they always show up as a solid gray block. What the?

Anyway, if anybody is familiar with the curses library, any help would be appreciated.

If it means anything, the chars are stored as const int, because using them as char's result in the gray blocks as well, even with addch();