Sets the labels text, attributes and mnemonic from markup.
Parses @str which is marked up with Pango markup (see [func@Pango.parse_markup]),
setting the label’s text and attribute list based on the parse results.
If characters in @str are preceded by an underscore, they are underlined
indicating that they represent a keyboard accelerator called a mnemonic.
The mnemonic key can be used to activate another widget, chosen
automatically, or explicitly using method@Gtk.Label.set_mnemonic_widget].
Sets the labels text, attributes and mnemonic from markup.
Parses @str which is marked up with Pango markup (see [func@Pango.parse_markup]), setting the label’s text and attribute list based on the parse results. If characters in @str are preceded by an underscore, they are underlined indicating that they represent a keyboard accelerator called a mnemonic.
The mnemonic key can be used to activate another widget, chosen automatically, or explicitly using method@Gtk.Label.set_mnemonic_widget].