Sorry for the late reply -- took me a bit to get back to working on this so
I could try it. That definitely works!

I would not have guessed that from Worg, that's for sure. Thanks much for
chiming in.


John


On Sat, Aug 8, 2015 at 4:54 PM, Fabrice Popineau <
fabrice.popineau@supelec.fr> wrote:

> This should do it :
>
> * Hello
>
> ** columns
>            :B_columns:
> :PROPERTIES:
> :BEAMER_env: columns
> :BEAMER_opt: [c]
> :END:
>
> *** Column 1
>               :BMCOL:
> :PROPERTIES:
> :BEAMER_col: 0.3
> :END:
>
> Colonne 1
>
> *** Column 2
>               :BMCOL:
> :PROPERTIES:
> :BEAMER_col: 0.7
> :END:
>
> Colonne 2
>
> Fabrice
>
>
> 2015-08-08 18:30 GMT+02:00 John Hendy <jw.hendy@gmail.com>:
>
>> I have an org beamer file with the following header since I generally
>> prefer top-alignment for frames:
>>
>> #+latex_class_options: [aspectratio=169,t,presentation,bigger,fleqn]
>>
>> I have some columns where I want vertically centered text, and am not
>> sure how to pass the option to \columns{} instead of an individual
>> \column{}.
>>
>> Worg says this(http://orgmode.org/worg/exporters/beamer/ox-beamer.html):
>>
>> "All contiguous environments are automatically wrapped in a columns
>> environment, although it can be forced at any point by setting the
>> BEAMER_env property to columns. This might be handy if you want to
>> pass special options."
>>
>> But where does that go? I have this:
>>
>> * Test
>>
>> ** Col1      :BMCOL:
>>    :PROPERTIES:
>>    :BEAMER_col: 0.5
>>    :END:
>>
>> - blah
>> - blah
>> - blah
>>
>> ** Col2      :BMCOL:
>>    :PROPERTIES:
>>    :BEAMER_col: 0.5
>>    :END:
>>
>> - blah
>> - blah
>> - blah
>>
>> I want this (note the [c] to override my document-wide [t] option):
>>
>> \begin{frame}[label={sec:orgheadline1}]{Test}
>> \begin{columns}[c]
>> \begin{column}{0.5\columnwidth}
>> \begin{itemize}
>> \item blah
>> \item blah
>> \item blah
>> \end{itemize}
>> \end{column}
>>
>> \begin{column}{0.5\columnwidth}
>> \begin{itemize}
>> \item blah
>> \item blah
>> \item blah
>> \end{itemize}
>> \end{column}
>> \end{columns}
>> \end{frame}
>> \end{document}
>>
>> But if I add =:beamer_env: columns= to both subheadlines, I get each
>> in it's own \begin/end{columns} environment, which is not what I want.
>> I just need a single columns env, with the [c] option passed, that
>> encompasses both individual column environments.
>>
>>
>> John
>>
>>
>
>
> --
> Fabrice Popineau
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