gtk/text_view.go
func (v *TextView) BackwardDisplayLineStart(iter *TextIter) bool {
	return gobool(C.gtk_text_view_backward_display_line_start(v.native(), iter.native()))
}
func (v *TextView) BackwardDisplayLineStart(iter *TextIter) bool {
	return gobool(C.gtk_text_view_backward_display_line_start(v.native(), iter.native()))
}
// BackwardDisplayLineStart is a wrapper around gtk_text_view_backward_display_line_start().