在屏幕上显示窗口，应用程序调用gtk_main，激活主循环。
The window is displayed on the screen, and the application activates the main loop by calling gtk_main .
本系列的下一篇文章将讨论用于在UNIX和Linux系统上捕获显示整个屏幕或特定窗口的图像的标准工具。
The next article in this series will discuss standard tools for capturing images that show the entire screen or a specific window on UNIX and Linux systems.
这些任务常常需要在屏幕上显示许多窗口；例如，在一个窗口中执行tail，在另一个窗口中执行less，在第三个窗口中显示命令提示。
Usually, both tasks require oodles of Windows tiled on screen to keep a watchful eye-perhaps tail in one window, less in another window, and a command prompt in yet another.
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