Joost Kremers <joostkrem...@fastmail.fm> writes:
> On Thu, Nov 29 2018, Gustavo Barros wrote:
>> Louis,
>>
>> a hunch, which might work.
>> It seems that, if you try to set the length in your preamble,
>> `\beamer@frametextheight` is not yet defined.
>> So, you might try the hook `\AtBeginDocument` to see if the definition comes
>> at
>> a better timing.
>>
>> #+LATEX_HEADER:
>> \newlength\mytextheight\AtBeginDocument{\makeatletter\setlength\mytextheight{\beamer@frametextheight}\makeatother}
>>
>> As I said, it's a hunch, for I haven't tested. But I think it may be it.
>
> Why not put the entire thing inside \AtBeginDocument?
>
> To the OP: \paperheight does seem to be available in Beamer. Couldn't you use
> that?
Using
#+LATEX_HEADER:
\newlength\mytextheight\AtBeginDocument{\makeatletter\setlength\mytextheight{\beamer@frametextheight}\makeatother}
also leads to the error
! Undefined control sequence.
<argument> \beamer
So I went with \paperheight instead, which works fine.
Regards
Loris
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