setTabs
Sets the tabs to use for @layout, overriding the default tabs.
PangoLayout
will place content at the next tab position whenever it meets a Tab character (U+0009).
By default, tabs are every 8 spaces. If @tabs is null, the default tabs are reinstated. @tabs is copied into the layout; you must free your copy of @tabs yourself.
Note that tabs and justification conflict with each other: Justification will move content away from its tab-aligned positions. The same is true for alignments other than %PANGO_ALIGN_LEFT.
Parameters
tabs
a PangoTabArray