init-image-library

init-image-library is a built-in function in `C source code'.

(init-image-library TYPE)

Initialize image library implementing image type TYPE.
Return non-nil if TYPE is a supported image type.

If image libraries are loaded dynamically (currently only the case on
MS-Windows), load the library for TYPE if it is not yet loaded, using
the library file(s) specified by `dynamic-library-alist'.