pub fn wscrl(handle: WINDOW, n: i32) -> Result<(), NCurseswError>Expand description
For positive n, the wscrl() routine scroll the window up n lines
(line i+n becomes i); otherwise scroll the window down n lines.
This involves moving the lines in the window character image structure.
The current cursor position is not changed.
For these functions to work, scrolling must be enabled via scrollok().