Returns the GtkSourceGutter object associated with window_type for view.
Only GTK_TEXT_WINDOW_LEFT and GTK_TEXT_WINDOW_RIGHT are supported,
respectively corresponding to the left and right gutter. The line numbers
and mark category icons are rendered in the gutter corresponding to
GTK_TEXT_WINDOW_LEFT.
Since 2.8
Returns the GtkSourceGutter object associated with window_type for view. Only GTK_TEXT_WINDOW_LEFT and GTK_TEXT_WINDOW_RIGHT are supported, respectively corresponding to the left and right gutter. The line numbers and mark category icons are rendered in the gutter corresponding to GTK_TEXT_WINDOW_LEFT. Since 2.8