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- ;;; -*-Scheme-*-
-
- (require 'xlib)
-
- (define dpy
- (open-display))
-
- (define (f)
- (display-wait-output dpy #t))
-
- (define root
- (display-root-window dpy))
-
- (define cmap
- (display-colormap dpy))
-
- (define white (white-pixel dpy))
- (define black (black-pixel dpy))
-
- (define rgb-white (query-color cmap white))
- (define rgb-black (query-color cmap black))
-
- (define win
- (create-window
- 'parent root
- 'width 300 'height 300
- 'background-pixel white))
-
- (define gc
- (create-gcontext
- 'window win
- 'background white 'foreground black))
-
- (map-window win)
-