有没有不使用css而用c++编写的GTK+3中的多行文本域的例子？

#include <gtk/gtk.h>

int main(int argc, char *argv[]) {
    gtk_init(&argc, &argv);

    // 创建主窗口
    GtkWidget *window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
    gtk_window_set_title(GTK_WINDOW(window), "多行文本域示例");
    gtk_container_set_border_width(GTK_CONTAINER(window), 10);
    gtk_widget_set_size_request(window, 400, 300);
    g_signal_connect(window, "destroy", G_CALLBACK(gtk_main_quit), NULL);

    // 创建滚动窗口
    GtkWidget *scrolled_window = gtk_scrolled_window_new(NULL, NULL);
    gtk_scrolled_window_set_policy(GTK_SCROLLED_WINDOW(scrolled_window),
                                   GTK_POLICY_AUTOMATIC, GTK_POLICY_AUTOMATIC);
    gtk_container_add(GTK_CONTAINER(window), scrolled_window);

    // 创建多行文本域
    GtkWidget *text_view = gtk_text_view_new();
    gtk_container_add(GTK_CONTAINER(scrolled_window), text_view);

    gtk_widget_show_all(window);
    gtk_main();

    return 0;
}