This will also work without the dependencies: (defun maximize-frame () (interactive) (set-frame-size (selected-frame) (display-pi

This will also work without the dependencies: (defun maximize-frame () (interactive) (set-frame-size (selected-frame) (display-pixel-width) (display-pixel-height)) (set-frame-position (selected-frame) 0 0)) EDIT: Should've read the help :)