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From: Mathias Dahl <brakjoller@hotmail.com>
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Subject: Re: Calculate window size in pixels
Date: 06 May 2005 17:40:41 +0200
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Mathias Dahl <brakjoller@hotmail.com> writes:

 
> Which means I can use this:
> 
> (defun window-height-pixels ()
>   (let ((line-pixel-height-ratio (/ (+ (frame-pixel-height) 0.0) (frame-height)))
>         (column-pixel-width-ratio (/ (+ (frame-pixel-width) 0.0) (frame-width))))
>     (ftruncate (* (window-height) line-pixel-height-ratio))))
> 
> (defun window-width-pixels ()
>   (let ((column-pixel-width-ratio (/ (+ (frame-pixel-width) 0.0) (frame-width))))
>     (ftruncate (* (window-width) column-pixel-width-ratio))))

And even better:

(defun window-height-pixels ()
  (let ((line-pixel-height-ratio (/ (+ (frame-pixel-height) 0.0) (frame-height))))
    (truncate (* (window-height) line-pixel-height-ratio))))

(defun window-width-pixels ()
  (let ((column-pixel-width-ratio (/ (+ (frame-pixel-width) 0.0) (frame-width))))
    (truncate (* (window-width) column-pixel-width-ratio))))

/Mathias