#GtkSourceRegionIter is an opaque datatype; ignore all its fields. Initialize the iter with gtk_source_region_get_start_region_iter().
Gets the subregion at this iterator.
Moves iter to the next subregion.
iter
#GtkSourceRegionIter is an opaque datatype; ignore all its fields. Initialize the iter with gtk_source_region_get_start_region_iter().