Re: [Emacs-diffs] ImageMagick Support on Windows

[Eli Zaretskii <eliz@gnu.org>]

> From: rzl24ozi@gmail.com
> Cc: emacs-devel@gnu.org
> Date: Wed, 15 Oct 2014 18:38:30 +0900
> 
> In my case, crashed at imagemagick-types in image.c.
> imagemagick-register-types is called in image.el and finally
> imagemagick-types in image.c is called, but at this time, imagemagick
> functions are not initialized yet. then temacs crash.
> 
> I add init_imagemagick_functons to imagemagick-types.

I think that's the right fix, thanks.

> And, for imagemagick-register-types to work well, there was a need to
> load image.el after w32-win.el in loadup.el because
> dynamic-library-alist is set in w32-win.el.

That's probably correct as well.

> Yes, libMagickWand-XXX.dll depend on libMagickCore-XXX.dll and
> libMagickCore-XXX.dll is automatically loaded when load
> libMagickWand-XXX.dll.
> But some functions used in image.c is in libMagickCore-XXX.dll.
> To get these functions by GetProcAddress, need to load
> libMagickCore-XXX.dll separately.
> 
> Although is not a smart way, I add two DLLs as below
> to dynamic-library-alist and load each library separately.
> (My imagemagick is built without --enable-hdri.)
> 
> '(magickwand "libMagickWand-6.Q16-2.dll")
> '(magickcore "libMagickCore-6.Q16-2.dll")

Yuck!  I think it's much better to teach w32-win.el and
w32_delayed_load to load more than one library for a certain image
type.