如何在NSStatusWindowLevel窗口中获取键盘事件，而我的应用程序不是最前面的？ [英] How do I get keyboard events in an NSStatusWindowLevel window while my application is not frontmost?
问题描述
创建半透明窗口后（基于示例代码Matt Gemmell ）我想在这个窗口中获得键盘事件。看来，当我的应用程序是活动应用程序时，只有键盘事件，而我想要键盘事件，即使我的应用程序没有活动但窗口是可见的。
After creating a translucent window (based on example code by Matt Gemmell) I want to get keyboard events in this window. It seems that there are only keyboard events when my application is the active application while I want keyboard events even when my application isn't active but the window is visible.
基本上我想要类似Quicksilver应用程序（由blacktree提供）的行为。
Basically I want behavior like that provided by the Quicksilver application (by blacktree).
有没有人有任何提示如何做？
Does anybody have any hints on how to do this?
推荐答案
有两个选项：
- 使用
GetEventMonitorTarget（）与一个粘连的碳运行循环来抓取键盘事件。示例代码位于CocoaDev的此页面。
- 使用
CGEventTapCreate。示例代码可以在此主题中找到苹果开发者邮件列表。
- Use
GetEventMonitorTarget()with a tacked-on Carbon run loop to grab keyboard events. Sample code is available on this page at CocoaDev. - Register an event trap with
CGEventTapCreate. Sample code can be found in this thread from the Apple developer mailing list.
编辑：请注意，只有在通用存取偏好设定中勾选[启用辅助装置的存取权]
Note that these methods only work if you check off "Enable access for assistive devices" in the Universal Access preference pane.
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