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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