paint_widget(math_view);
gtk_math_view_paint(math_view);
GTKMATHVIEW_METHOD_NAME(set_font_size)(GtkMathView* math_view, guint size){  g_return_if_fail(math_view != NULL);  g_return_if_fail(math_view->view != NULL);  g_return_if_fail(size > 0);  math_view->view->setDefaultFontSize(size);  paint_widget(math_view);}