java - GraphicsConfiguration 在 Java 中代表什么？

Question

Java 8 文档以下列方式描述 GraphicsConfiguration。

The GraphicsConfiguration class describes the characteristics of a graphics destination such as a printer or monitor

虽然描述有点非技术性和模糊性，但足以让我在屏幕截图应用程序中使用它，但我仍然不明白为什么一个 GraphicsDevice 有多个 GraphicsConfigurations。在 GraphicsDevice 的文档中指出:

Each graphics device has one or more GraphicsConfiguration objects associated with it. These objects specify the different configurations in which the GraphicsDevice can be used.

这些“不同的配置”是什么，它们会在什么时候出现？

Answer 1

如该类的 Javadoc 中所述:

There can be many GraphicsConfiguration objects associated with a single graphics device, representing different drawing modes or capabilities. The corresponding native structure will vary from platform to platform. For example, on X11 windowing systems, each visual is a different GraphicsConfiguration. On Microsoft Windows, GraphicsConfigurations represent PixelFormats available in the current resolution and color depth.

http://docs.oracle.com/javase/7/docs/api/java/awt/GraphicsConfiguration.html

对于 X11 和术语“视觉”，此链接澄清了一点:http://tronche.com/gui/x/xlib/utilities/visual.html - 当然，对于“普通”应用程序，这可能会令人恼火，但由于 Java AWT 使用底层 OS 图形，它必须表示其特性。