When you use the command C-x o (
other-window) to select
some other window, it moves through live windows in a specific order.
For any given configuration of windows, this order never varies. It
is called the cyclic ordering of windows.
The ordering is determined by a depth-first traversal of each frame’s window tree, retrieving the live windows which are the leaf nodes of the tree (see Windows and Frames). If the minibuffer is active, the minibuffer window is included too. The ordering is cyclic, so the last window in the sequence is followed by the first one.
next-window&optional window minibuf all-frames
This function returns a live window, the one following window in
the cyclic ordering of windows. window should be a live window;
if omitted or
nil, it defaults to the selected window.
The optional argument minibuf specifies whether minibuffer windows
should be included in the cyclic ordering. Normally, when minibuf
nil, a minibuffer window is included only if it is currently
active; this matches the behavior of C-x o. (Note that a
minibuffer window is active as long as its minibuffer is in use; see
If minibuf is t, the cyclic ordering includes all
minibuffer windows. If minibuf is neither t nor
nil, minibuffer windows are not included even if they are active.
The optional argument all-frames specifies which frames to consider:
nilmeans to consider windows on window’s frame. If the minibuffer window is considered (as specified by the minibuf argument), then frames that share the minibuffer window are considered too.
visiblemeans to consider windows on all visible frames.
If more than one frame is considered, the cyclic ordering is obtained by appending the orderings for those frames, in the same order as the list of all live frames (see Finding All Frames).
previous-window&optional window minibuf all-frames
This function returns a live window, the one preceding window in
the cyclic ordering of windows. The other arguments are handled like
other-windowcount &optional all-frames
This function selects a live window, one count places from the selected window in the cyclic ordering of windows. If count is a positive number, it skips count windows forwards; if count is negative, it skips -count windows backwards; if count is zero, that simply re-selects the selected window. When called interactively, count is the numeric prefix argument.
The optional argument all-frames has the same meaning as in
next-window, like a
nil minibuf argument to
This function does not select a window that has a non-
no-other-window window parameter (see Window Parameters).
walk-windowsfun &optional minibuf all-frames
This function calls the function fun once for each live window, with the window as the argument.
It follows the cyclic ordering of windows. The optional arguments
minibuf and all-frames specify the set of windows
included; these have the same arguments as in
all-frames specifies a frame, the first window walked is the
first window on that frame (the one returned by
frame-first-window), not necessarily the selected window.
If fun changes the window configuration by splitting or deleting windows, that does not alter the set of windows walked, which is determined prior to calling fun for the first time.
one-window-p&optional no-mini all-frames
This function returns t if the selected window is the only live
If the minibuffer window is active, it is normally considered (so that
this function returns
nil). However, if the optional argument
no-mini is non-
nil, the minibuffer window is ignored even
if active. The optional argument all-frames has the same
meaning as for
The following functions return a window which satisfies some criterion, without selecting it:
get-lru-window&optional all-frames dedicated not-selected
This function returns a live window which is heuristically the least
recently used. The optional argument all-frames has
the same meaning as in
If any full-width windows are present, only those windows are
considered. A minibuffer window is never a candidate. A dedicated
window (see Dedicated Windows) is never a candidate unless the
optional argument dedicated is non-
nil. The selected
window is never returned, unless it is the only candidate. However, if
the optional argument not-selected is non-
nil in that case.
get-mru-window&optional all-frames dedicated not-selected
This function is like
get-lru-window, but it returns the most
recently used window instead. The meaning of the arguments is the
same as described for
get-largest-window&optional all-frames dedicated not-selected
This function returns the window with the largest area (height times
width). The optional argument all-frames specifies the windows to
search, and has the same meaning as in
A minibuffer window is never a candidate. A dedicated window
(see Dedicated Windows) is never a candidate unless the optional
argument dedicated is non-
nil. The selected window is not
a candidate if the optional argument not-selected is
nil. If the optional argument not-selected is
nil and the selected window is the only candidate, this
If there are two candidate windows of the same size, this function prefers the one that comes first in the cyclic ordering of windows, starting from the selected window.
get-window-with-predicatepredicate &optional minibuf all-frames default
This function calls the function predicate for each of the
windows in the cyclic order of windows in turn, passing it the window
as an argument. If the predicate returns non-
nil for any
window, this function stops and returns that window. If no such
window is found, the return value is default (which defaults to
The optional arguments minibuf and all-frames specify the
windows to search, and have the same meanings as in