Ex05b应用程序演示了多种字体的创建， 显示等。在这个程序中，我们创建了Arial、 Courier、Roman和LinePrinter等四种字体，字 符的大小随窗口的大小而发生变化。-The Ex05b application demonstrates the creation of a variety of fonts. In this program, we have to create the the four fonts such as Arial, Courier, R