Variable: gdb-many-windows-hook
gdb-many-windows-hook is a customizable variable defined in
gdb-mi.el.gz.
Value
nil
Documentation
Hook run after entering or leaving gdb-many-windows(var)/gdb-many-windows(fun).
No problems result if this variable is not bound.
add-hook automatically binds it. (This is true for all hook variables.)
Source Code
;; Defined in /usr/src/emacs/lisp/progmodes/gdb-mi.el.gz
(define-minor-mode gdb-many-windows
"If nil just pop up the GUD buffer unless `gdb-show-main' is t.
In this case it starts with two windows: one displaying the GUD
buffer and the other with the source file with the main routine
of the debugged program. Non-nil means display the layout shown for
`gdb'."
:global t
:group 'gdb
:version "22.1"
(if (and gud-comint-buffer
(buffer-name gud-comint-buffer))
(ignore-errors
(gdb-restore-windows))))