From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Loris Bennett" <loris.bennett@fu-berlin.de>
Subject: Re: Placement of \makeatletter with \beamer@frametextheight
Date: Thu, 29 Nov 2018 14:07:40 +0100
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Eric S Fraga <esflists@gmail.com> writes:

> On Thursday, 29 Nov 2018 at 09:38, Julius Dittmar wrote:
>> Am 29.11.18 um 09:13 schrieb Julius Dittmar:
>>> Am 29.11.18 um 08:17 schrieb Loris Bennett:
>>>>> #+latex_header: \makeatletter\let\mytextheight\beamer@frametexheight\makeatother
>>>>> #+attr_latex: :height 0.75\mytextheight
>>
>> Oh, or perhaps just a typo is involved: is it really
>> \beamer@frametexheight or rather \beamer@frametextheight you are chasing
>> after?
>
> Also, you may need to define your mytextheight as a length and then use \setlength instead of \let.

After correcting the typo I followed Eric's and Julius's suggestions and
I tried adding

  #+LATEX_HEADER: \newlength\mytextheight\makeatletter\setlength\mytextheight{\beamer@frametextheight}\makeatother

to the beginning of the Org file, but in this case

  \the\mytextheight

is 0.0pt.  After that I tried adding the definition on the slide itself:

  #+BEGIN_SRC latex
  \newlength\mytextheight\makeatletter\setlength\mytextheight{\beamer@frametextheight}\makeatother
  #+END_SRC

but got the error

  ! Undefined control sequence.
  <argument> \beamer 
                     
  l.153 \end{frame}
                   
  ! Missing number, treated as zero.
  <to be read again> 
                     @
  l.153 \end{frame}

Any thoughts?

Cheers,

Loris

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