Function ncursesw::wbkgd

pub fn wbkgd(handle: WINDOW, ch: ChtypeChar) -> Result<(), NCurseswError>

Set the background property of the specified window and then apply this setting to every character position in that window.

According to X/Open Curses, it should do this:

• The rendition of every character on the screen is changed to the new background rendition.
• Wherever the former background character appears, it is changed to the new background character.