Function ncursesw::wbkgdset

pub fn wbkgdset(handle: WINDOW, ch: ChtypeChar)

Manipulate the background of the specified window. The window background is a character (with rendition). The attribute part of the background is combined (OR'ed) with all non-blank characters that are written into the window with waddch(). Both the character and attribute parts of the background are combined with the blank characters. The background becomes a property of the character and moves with the character through any scrolling and insert/delete line/character operations.

To the extent possible on a particular terminal, the attribute part of the background is displayed as the graphic rendition of the character put on the screen.