Creates an image-locator object to use with toolbars, list views and tree views.
A non-negative integer.
make-image-locator creates an image-locator object for use with toolbars, list views, and tree views. It is used to specify a single sub-image from a larger image that contains many images side by side. It is also useful for accessing some images that can only be specified by means of image sets.
CAPI User Guide and Reference Manual (Unix version) - 3 Aug 2017