appkit:close

(appkit:close window)

Closes (hides) the window; the Lisp value stays valid. Answers nil. Part of the appkit package, a Cocoa widget layer written in rontolisp over objc and loaded on first use: macOS (java -jar, the rontolisp binary, or a compiled .class / .jar; never a .wasm), with a display. See the macOS GUI guide.

CL-USER> (appkit:close *win*)
NIL
CL-USER> (appkit:visible-p *win*)
NIL