material-ui Roboto font

#include <gtk/gtk.h>
#include <string.h>

static void activate(GtkApplication *app, gpointer user_data) {
    GtkWidget *window;
    GtkWidget *label;

    window = gtk_application_window_new(app);
    gtk_window_set_title(GTK_WINDOW(window), "Material-UI Roboto Font");
    gtk_window_set_default_size(GTK_WINDOW(window), 300, 200);

    label = gtk_label_new("Hello, Material-UI!");
    PangoFontDescription *font_desc = pango_font_description_from_string("Roboto 14");
    gtk_widget_override_font(label, font_desc);
    pango_font_description_free(font_desc);

    gtk_container_add(GTK_CONTAINER(window), label);

    gtk_widget_show_all(window);
}

int main(int argc, char argv) {
    GtkApplication *app;
    int status;

    app = gtk_application_new("org.example.material_ui", G_APPLICATION_FLAGS_NONE);
    g_signal_connect(app, "activate", G_CALLBACK(activate), NULL);
    status = g_application_run(G_APPLICATION(app), argc, argv);
    g_object_unref(app);

    return status;
}