... foreground mode 前台方式,前台操作方... foreground application 前台应用程序... permanent resident foreground 永久固定前台...
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foreground of application 应用前景
production and application foreground 生产及应用前景
discussion of the application foreground 应用前景探讨
application scope and foreground 应用范围和前景
application value and foreground 应用价值和前景
What happens to the current foreground application when you switch to a new application?
如果用户切换到一个新的程序，在屏幕的主界面上会发生什么？
Background applications can get events, read and write data, access services, repaint themselves and are generally not restricted other than to run at a lower priority than the foreground application.
转为后台运行的程序照样可以获得系统事件、读写数据、访问系统服务、改变自己的界面，只不过比当前显示在主界面的程序而言，运行优先级低了一点。
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