Re: [NTG-context] How to use a variable in a macro agrument

May be \useexternalfigure is your friend instead of your \define[]\logofile{}, which allows you to give a symbolic name of the logo-file. This symbolic name you can use then in the setlayer construct. Willi

On 18 Dec 2021, at 10:52, skyhorse--- via ntg-context wrote:

I have a need to use a logo graphics file several times in a document. I somethings need to update to a newer graphics file. I only want to make one change to the original variable value definition.

I've tried using \define.. but it's not working for me. Here is my MWE:

%%%%%%%%

\define[]\logofile{an_image_file.png} % Here defining the variable with the filename to use.

\definelayer[stillimage] \setlayer[stillimage]{\externalfigure[\logofile]} % Here trying to use the \logofile macro. \setupbackgrounds[page][background=stillimage]

\starttext \input knuth \stoptext

What's the accepted way to do this or are macro arguments not allowable?

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