If you don’t want to be annoyed by window stealing and resizing, put the following lines in your .emacs for a definitive solution that works even with libraries like gud that tries to open a new frame when they can’t steal your windows :
(see this answer for info on the following advice
)
(defadvice pop-to-buffer (before cancel-other-window first)
(ad-set-arg 1 nil))
(ad-activate 'pop-to-buffer)
;; Toggle window dedication
(defun toggle-window-dedicated ()
"Toggle whether the current active window is dedicated or not"
(interactive)
(message
(if (let (window (get-buffer-window (current-buffer)))
(set-window-dedicated-p window
(not (window-dedicated-p window))))
"Window '%s' is dedicated"
"Window '%s' is normal")
(current-buffer)))
;; Press [pause] key in each window you want to "freeze"
(global-set-key [pause] 'toggle-window-dedicated)
and customize pop-up-windows
variable to nil
.
you could also use StickyWindows instead of window-dedicated feature.