You can install it with mingw-get.
In the gui it is listed in the Mingw Contributed section.
Both narrow and wide (Unicode) text is supported.
ncurses 6.0 improved a lot for Windows since 5.9, but there are still
issues (which are not in PDCurses).
* To make it work in Console (also known as Console2) you have to set
the NCURSES_CONSOLE2 environment variable.
* It doesn't work at all in ConsoleZ.
* You may see tremble in the screen while it is redrawing.
Advantage over PDCurses:
* support for Unicode combining characters.