gtk_math_view_select(GtkMathView* math_view, GtkMathView_Model_Element elem)
gtk_math_view_select(GtkMathView* math_view, GtkMathViewElementId elem)
gtk_math_view_select(GtkMathView* math_view, GtkMathView_Model_Element elem){  g_return_if_fail(math_view);  g_return_if_fail(math_view->view);  g_return_if_fail(elem);  if (SmartPtr<const Gtk_WrapperArea> area = findGtkWrapperArea(math_view->view, elem))    {      area->setSelected(1);      paint_widget(math_view);    }}