Function gtk_text_view_scroll_to_mark

pub unsafe extern "C" fn gtk_text_view_scroll_to_mark(
    text_view: *mut GtkTextView,
    mark: *mut GtkTextMark,
    within_margin: c_double,
    use_align: gboolean,
    xalign: c_double,
    yalign: c_double,
)