The GtkLabel widget you want to get the text from. Parses the given string for underscores and converts the next character to an underlined character. The GtkLabel you want to affect. The string you want to parse for underlines. Toggles line wrapping within the GtkLabel widget.
TRUE makes it break lines if text exceeds the widget's size.
This does not include any embedded underlines indicating mnemonics or Pango markup. This is the internal string used by the label, and must not be modified. If characters in str are preceded by an underscore, they are underlined indicating that they represent a keyboard accelerator called a mnemonic. For instance, if the label is inside a button or menu item, the button or menu item will automatically become the mnemonic widget and be activated by the mnemonic. If the label is not selectable, this function has no effect.