Emacs under Windows and PNG files

Question

Would anyone have any pointers on getting PNG images to display in Emacs 23 under Win32?.. I have installed the gnuwin32 set of utilities, including libpng and zlib; C:\\Pr

Answer 1

You have to copy one of these dlls "libpng12d.dll" "libpng12.dll" "libpng.dll" "libpng13d.dll" "libpng13.dll" to your emacs-23.1/bin/ directory. They require zlib1.dll which you have to copy as well. I did the same thing for jpeg62.dll and giflib4.dll and now my emacs supports jpg, gif and png files. For some reason it does not work if I simply put these dlls in the path.

You can check (image-type-available-p 'png) to see if png is supported. image-library-alist maps image type to a list of dlls which support it.