void gtk_label_set_markup_with_mnemonic ( GtkLabel* self, const char* str )
Sets the labels text, attributes and mnemonic from markup.
str which is marked up with Pango markup (see
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