code: func (v *TextView) GetIterLocation(iter *TextIter) *gdk.Rectangle {
  	var rect C.GdkRectangle
  	C.gtk_text_view_get_iter_location(v.native(), iter.native(), &rect)
  	return gdk.WrapRectangle(uintptr(unsafe.Pointer(&rect)))
  }
docs: // GetIterLocation is a wrapper around gtk_text_view_get_iter_location().