setMarkup
Sets the layout text and attribute list from marked-up text.
See pango_markup.html).
Replaces the current text and attribute list.
This is the same as method@Pango.Layout.set_markup_with_accel, but the markup text isn't scanned for accelerators.
Parameters
markup
marked-up text
length
length of marked-up text in bytes, or -1 if @markup is NUL
-terminated