gtk-expander-use-underline (object)

object -- a gtk-expander widget
use-underline -- true if underlines in the text indicate mnemonics

Accessor of the use-underline slot of the gtk-expander class.

The gtk-expander-use-underline slot access function returns whether an embedded underline in the expander label indicates a mnemonic.

If true, an underline in the text of the expander label indicates the next character should be used for the mnemonic accelerator key.