math_view->renderingContext->setDrawable(math_view->pixmap);
gtk_math_view_configure_event(GtkWidget* widget,			      GdkEventConfigure* event,			      GtkMathView* math_view){  g_return_val_if_fail(widget != NULL, FALSE);  g_return_val_if_fail(event != NULL, FALSE);  g_return_val_if_fail(math_view != NULL, FALSE);  g_return_val_if_fail(math_view->view, FALSE);  // g_return_val_if_fail(math_view->drawing_area != NULL, FALSE);  if (math_view->pixmap != NULL) g_object_unref(math_view->pixmap);  math_view->pixmap = gdk_pixmap_new(widget->window, event->width, event->height, -1);  // math_view->drawing_area->SetSize(px2sp(event->width), px2sp(event->height));#if 1  // math_view->drawing_area->SetPixmap(math_view->pixmap);#endif  math_view->view->setDrawable(math_view->pixmap);  paint_widget(math_view);  return TRUE;}