A JFace window is not actually the GUI object for a top-level window (SWT already provides one, called a shell).
JFace窗口实际上不是顶级窗口的GUI对象(SWT已经提供了一个，名为Shell)。
It is a top-level window with a border, title, and optional menu bar. Listing 3 shows the declaration of the calculator's frame.
它是一个顶级窗口，具有边框、标题和可选菜单栏。
For example, when a top-level window is moved completely off-screen or a child object is moved outside the boundaries of the container's viewport.
例如，在顶级窗口完全移动到屏幕之外或者某个子对象移动到容器视区边界外部的时候。
The system calls a WH_SHELL hook procedure when the shell application is about to be activated and when a top-level window is created or destroyed.
当加壳程序即将被激活时、当处在最顶层的窗口被创建或者销毁时，系统会调用WH_SHELL钩子子程。
The improved menu bar widget now supports an overflow indicator, shown in figure 2, when the window is sized down to a width that doesn't support displaying all the current top-level actions.
经过改进的菜单栏widget现支持溢位指示器(overflow indicator)，如图2所示，当窗口缩小到无法显示当前所有顶级操作的宽度时，则以溢位指示器的形式指出。
It is a "top-level" widget, meaning that it opens in a separate window.
它是一个“项层”部件，意思是它必须在一个单独的窗口中打开。
And sometimes, it is difficult to find a recognizable ancestor of the test object, so the search has to begin from the top-level object, such as a window.
有时，甚至很难找到测试对象可识别的父类，所以搜索必须从最顶层开始，例如从窗口开始。
While you could use a window to avoid the title bar, some tasks require a top-level frame, not a window.
虽然您可以使用Window来避开Titlebar，但一些任务要求的是一个顶级的Frame而不是窗口。
A shell is a top-level composite (frame or window) that may have no parent composite; instead, it has a Display as a parent, often set by default.
shell是一种可能没有父复合控件的复合控件(框架或窗口)；此外，它还有一个作为父控件的Display，这通常也是默认设置。
The top-level Quantify window comes up as your application runs.
在您的应用程序运行时，最高层的Quantify窗口出现了。
That is, even the bottom window in a level obscures the top window of the next level down.
那就是说，即使底部窗口的层级在顶部窗口层次的上面。
The host of a custom control is the HWND of the control itself, not the application window or any other window that might contain groups of top-level controls.
自订控制项的主机是控制项本身的HWND，而非是应用程序视窗或任何其他可能包含最上层控制项群组的视窗。
The host of a custom control is the HWND of the control itself, not the application window or any other window that might contain groups of top-level controls.
自订控制项的主机是控制项本身的HWND，而非是应用程序视窗或任何其他可能包含最上层控制项群组的视窗。
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