getLines
Returns the lines of the @layout as a list.
Use the faster method@Pango.Layout.get_lines_readonly if you do not plan to modify the contents of the lines (glyphs, glyph widths, etc.).
Return
a GSList containing the lines in the layout. This points to internal data of the PangoLayout and must be used with care. It will become invalid on any change to the layout's text or properties.