A window configuration records the entire layout of one
frame—all windows, their sizes, which buffers they contain, how those
buffers are scrolled, and their values of point and the mark; also their
fringes, margins, and scroll bar settings. It also includes the value
minibuffer-scroll-window. As a special exception, the window
configuration does not record the value of point in the selected window
for the current buffer. Also, the window configuration does not record
the values of window parameters; see Window Parameters.
You can bring back an entire frame layout by restoring a previously saved window configuration. If you want to record the layout of all frames instead of just one, use a frame configuration instead of a window configuration; see Frame Configurations.
This function returns a new object representing frame's current window configuration. The default for frame is the selected frame.
This function restores the configuration of windows and buffers as specified by configuration, for the frame that configuration was created for.
The argument configuration must be a value that was previously returned by
current-window-configuration. The configuration is restored in the frame from which configuration was made, whether that frame is selected or not. This always counts as a window size change and triggers execution of the
window-size-change-functions(see Window Hooks), because
set-window-configurationdoesn't know how to tell whether the new configuration actually differs from the old one.
If the frame which configuration was saved from is dead, all this function does is restore the three variables
minibuffer-scroll-window. In this case, the function returns
nil. Otherwise, it returns
Here is a way of using this function to get the same effect as
save-window-excursion:(let ((config (current-window-configuration))) (unwind-protect (progn (split-window-vertically nil) ...) (set-window-configuration config)))
This special form records the window configuration, executes forms in sequence, then restores the earlier window configuration. The window configuration includes, for each window, the value of point and the portion of the buffer that is visible. It also includes the choice of selected window. However, it does not include the value of point in the current buffer; use
save-excursionalso, if you wish to preserve that.
Don't use this construct when
save-window-excursionalways triggers execution of
window-size-change-functions. (It doesn't know how to tell whether the restored configuration actually differs from the one in effect at the end of the forms.)
The return value is the value of the final form in forms. For example:(split-window) ⇒ #<window 25 on control.texi> (setq w (selected-window)) ⇒ #<window 19 on control.texi> (save-window-excursion (delete-other-windows w) (switch-to-buffer "foo") 'do-something) ⇒ do-something ;; The screen is now split again.
This function returns
tif object is a window configuration.
This function compares two window configurations as regards the structure of windows, but ignores the values of point and mark and the saved scrolling positions—it can return
teven if those aspects differ.
equalcan also compare two window configurations; it regards configurations as unequal if they differ in any respect, even a saved point or mark.
This function returns the frame for which the window configuration config was made.
Other primitives to look inside of window configurations would make sense, but are not implemented because we did not need them. See the file winner.el for some more operations on windows configurations.blog comments powered by Disqus