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38.6 Buffers and Windows

This section describes low-level functions to examine windows or to display buffers in windows in a precisely controlled fashion. related functions that find a window to use and specify a buffer for it. The functions described there are easier to use than these, but they employ heuristics in choosing or creating a window; use these functions when you need complete control.

— Function: set-window-buffer window buffer-or-name &optional norecord

This function makes window display buffer-or-name as its contents. buffer-or-name can be a buffer or a buffer name.

With non-nil optional argument norecord, do not modify the global or per-frame buffer ordering.

This function returns nil. 

          (set-window-buffer (selected-window) "foo")
               ⇒ nil
— Function: window-buffer &optional window

This function returns the buffer that window is displaying. If window is omitted, this function returns the buffer for the selected window. 

          (window-buffer)
               ⇒ #<buffer windows.texi>
— Function: get-buffer-window buffer-or-name &optional which-frames which-devices

This function returns a window currently displaying buffer-or-name, or nil if there is none. If there are several such windows, then the function returns the first one in the cyclic ordering of windows, starting from the selected window. See Cyclic Window Ordering.

The remaining arguments control which windows to consider. They have the same meaning as for next-window.