Lists the icons in the current icon theme. Only a subset of the icons can be listed by providing a context string. The set of values for the context string is system dependent, but will typically include such values as “Applications” and “MimeTypes”. Contexts are explained in the Icon Theme Specification. The standard contexts are listed in the Icon Naming Specification. Also see IconTheme.listContexts.
a string identifying a particular type of icon, or NULL to list all icons.
a GList list holding the names of all the icons in the theme. You must first free each element in the list with g_free(), then free the list itself with g_list_free().