Re: How do I make windows emacs display PNG and JPEG images?

[Steinar Bang]

>>>>> Eli Zaretskii <eliz@gnu.org>:

> You should put _all_ the files in bin/ that you find in the *.zip
> files, not just select DLLs.

Ok.  I added the config files of libpng as well, but it didn't make any
difference.

Why do the .exe files need to be copied. Are the .exe files loaded and
code in them executed? Or is the DLLs' location used to find the .exe
files to execute in a separate process?

> Also, the date of zlib1.dll looks old.

Ok, hm... sorry, the date is actually 2013-09-20, the 2008-07-13 date
was for zip.exe (I looked at the wrong file in dired).

> But I don't think these are the reasons for your problems.

Ok.

> What are the versions of the libraries against which the Emacs binary
> was built?  Look at the values of the variables libpng-version and
> libjpeg-version: do they match the versions of the DLLs you installed?

libpng-version's value is 10403
No match for libjpeg-version.

Sysinternals sigcheck couldn't find any version number in the DLLs (see below)

> (There's some explanation of this near line 200 of w32-win.el.)

No w32-win.el in the lisp directory.

locate-library says:
 No library w32-win in search path
 No library w32-win.el in search path

Here are the sysinternals sigcheck results for the libpng and libjpeg
DLLs:

c:\ProgramFiles\emacs-24.3\bin>sigcheck -q -a libpng16-16.dll
c:\ProgramFiles\emacs-24.3\bin\libpng16-16.dll:
        Verified:       Unsigned
        Link date:      10:40 21.06.2014
        Publisher:      n/a
        Description:    n/a
        Product:        n/a
        Prod version:   n/a
        File version:   n/a
        MachineType:    32-bit
        Binary Version: n/a
        Original Name:  n/a
        Internal Name:  n/a
        Copyright:      n/a
        Comments:       n/a
        Entropy:        6.584

c:\ProgramFiles\emacs-24.3\bin>sigcheck -q -a libjpeg-9.dll
c:\ProgramFiles\emacs-24.3\bin\libjpeg-9.dll:
        Verified:       Unsigned
        Link date:      11:28 21.06.2014
        Publisher:      n/a
        Description:    n/a
        Product:        n/a
        Prod version:   n/a
        File version:   n/a
        MachineType:    32-bit
        Binary Version: n/a
        Original Name:  n/a
        Internal Name:  n/a
        Copyright:      n/a
        Comments:       n/a
        Entropy:        6.323