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There was only one thing wrong with the code you tried, in terms of making the window dedicated:

(set-window-dedicated (selected-window) t)

The function is set-window-dedicated-p, not set-window-dedicated. Try again, without the typo:

 (set-window-dedicated-p (selected-window) t) 

That will prevent both you and Emacs from using the window for another buffer. For example, C-x b will raise an error.

To prevent automatic splitting of the window, you can do this:

 (set-frame-parameter nil 'unsplittable t) 

That will not prevent you from splitting the window, e.g. using C-x 2, but it will prevent Emacs from splitting it automatically.

There was only one thing wrong with the code you tried, in terms of making the window dedicated:

(set-window-dedicated (selected-window) t)

The function is set-window-dedicated-p, not set-window-dedicated. Try again, without the typo:

 (set-window-dedicated-p (selected-window) t) 

That will prevent both you and Emacs from using the window for another buffer. For example, C-x b will raise an error.

To prevent automatic splitting of the window, you can do this:

 (set-frame-parameter nil 'unsplittable t) 

That will not prevent you from splitting the window, e.g. using C-x 2, but it will prevent Emacs from splitting it automatically.

There was only one thing wrong with the code you tried, in terms of making the window dedicated:

(set-window-dedicated (selected-window) t)

The function is set-window-dedicated-p, not set-window-dedicated. Try again, without the typo.

There was only one thing wrong with the code you tried, in terms of making the window dedicated:

(set-window-dedicated (selected-window) t)

The function is set-window-dedicated-p, not set-window-dedicated. Try again, without the typo:

 (set-window-dedicated-p (selected-window) t) 

That will prevent both you and Emacs from using the window for another buffer. For example, C-x b will raise an error.

To prevent automatic splitting of the window, you can do this:

 (set-frame-parameter nil 'unsplittable t) 

That will not prevent you from splitting the window, e.g. using C-x 2, but it will prevent Emacs from splitting it automatically.

There was only one thing wrong with the code you tried:

(set-window-dedicated (selected-window) t)

The function is set-window-dedicated-p, not set-window-dedicated. Try again, without the typo.

There was only one thing wrong with the code you tried, in terms of making the window dedicated:

(set-window-dedicated (selected-window) t)

The function is set-window-dedicated-p, not set-window-dedicated. Try again, without the typo.