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user-ptr as image :data


From: Evgeny Zajcev
Subject: user-ptr as image :data
Date: Fri, 15 Mar 2019 22:14:21 +0300

I'm currently porting (https://github.com/zevlg/ffi-wand.el) nice wand-mode from SXEmacs to GNU EmacsĀ  and I miss feature to specify image `:data' as user-ptr object.

There is also no possibility to create DATA string in emacs-module, without string interpretation, because there is only `make_string' method, which expects given `str' pointer to be null-terminated UTF-8 string.

What is the best approach to create `:data` value for image using user-ptr?

Thanks

--
lg

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