gtk:label-pattern (object)

object -- the gtk:label you want to set the pattern to
pattern -- a string with the pattern as described below

Accessor of the pattern slot of the gtk:label class. The (setf gtk:label-pattern) function sets the pattern of underlines you want under the existing text within the label. For example if the current text of the label says "FooBarBaz" passing a pattern of "___ ___" will underline "Foo" and "Baz" but not "Bar".