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From: Eli Zaretskii <eliz@gnu.org>
Newsgroups: gmane.emacs.help
Subject: Re: PNG support for Emacs on Windows
Date: Sun, 03 May 2020 05:38:04 +0300
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In-Reply-To: <87zhaqc77f.fsf@robertthorpeconsulting.com> (message from Robert
 Thorpe on Sat, 02 May 2020 23:17:40 +0100)
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> From: Robert Thorpe <rt@robertthorpeconsulting.com>
> Date: Sat, 02 May 2020 23:17:40 +0100
> 
> PNG support doesn't seem to work though.  It gives the error "Cannot
> Display Image: (Invalid Image Specification".
> 
> I noticed one thing that might be the problem.  I used the 64-bit build
> of Emacs.  But, ezwinports only has the 32-bit build of the PNG
> library.  I don't know if Windows can deal with a call from a 64-bit
> program to a 32-bit library.

It can't.

> If it can't, where can I get a 64-bit version of the PNG library?

The same place you got the Emacs binary, I guess.