This is shown in Figure 6. Each screen instance tracks its own current window.

图6显示这种情况。每个Screen实例跟踪它自己的当前窗口。

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The call to GetInputFocus finds the current window identifier for the window in focus.

调用GetInputFocus将为持有焦点的窗口查找当前窗口标识符。

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Retrieves a reference to the current window or frame.

获取对当前窗口或框架的引用。

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Retrieves a reference to the current window or frame.

获取对当前窗口或框架的引用。

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