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检测正在进行的屏幕截图

[英]Detecting screen capture in progress

原文 2014-04-21 22:10:15 8 1 macos/ cocoa/ screenshot/ screen-capture

How can I detect when a screen shot selection (cmd-shift-4) is in progress? 如何检测正在进行的屏幕快照选择（cmd-shift-4）？

I have a custom window that I'm trying to make behave like a menu (it comes out of a status item). 我有一个自定义窗口，试图使它像菜单一样工作（它来自状态项）。 Part of this behavior is dismissing it when the user clicks on something else, which I detect using a CGEventTap. 这种行为的部分原因是，当用户单击其他内容（我使用CGEventTap检测到该内容）时将其关闭。 One case where I don't want a click to dismiss is when it's the start of a screen shot selection. 我不希望点击消失的一种情况是，它是屏幕快照选择的开始。 Is there any way to detect this? 有什么办法可以检测到这一点？

I'm talking about the "capture some of your screen" feature described here: http://support.apple.com/kb/HT5775 我说的是这里描述的“捕获屏幕的一部分”功能： http : //support.apple.com/kb/HT5775

1 个解决方案

I believe I've found the answer: check whether /usr/sbin/screencapture is running. 我相信已经找到了答案：检查/usr/sbin/screencapture是否正在运行。

I opened Activity Monitor, sorted by process ID, and hit cmd-shift-4. 我打开了活动监视器，按进程ID排序，然后单击cmd-shift-4。 screencapture appeared at the top of the list for the duration of the screen capture. screencapture出现在列表屏幕捕获的持续时间的顶部。