Sets whether underlines in the label indicate mnemonics.
If setting is true, an underscore character in self's label indicates a mnemonic accelerator key. This behavior is similar to propertyGtk.Label:use-underline.
the new value to set
Sets whether underlines in the label indicate mnemonics.
If setting is true, an underscore character in self's label indicates a mnemonic accelerator key. This behavior is similar to propertyGtk.Label:use-underline.