gtk:stack-page-use-underline (object)

object -- a gtk:stack-page object
setting -- a boolean if set, an underline in the title indicates the next character should be used for the mnemonic accelerator key

Accessor of the use-underline slot of the gtk:stack-page class. The gtk:stack-page-use-underline function gets whether underlines in the page title indicate mnemonics. The (setf gtk:stack-page-use-underline) function sets the property.