可可获取电源适配器状态
我目前正在开发一个备份应用程序，最近收到了很多要求添加功能的请求，其中最重要的一个是添加一个复选框，例如“使用电池电源时备份”，就像时间机器一样。
那么，有没有办法获取电源适配器的状态（已插入和已插入）？我想如果有人有一台台式 Mac，比如 iMac 等，我可能会一直插着电源。因此，我需要检测计算机是否是便携式计算机的方法。
我认为 IOKit 是一个值得一看的库，但我在文档中找不到任何内容，无论如何，该框架上几乎不存在这些内容。那么，由于它是一个较旧的 Carbon 框架，有没有办法注册一个回调，当电源状态发生变化时调用该回调？这样我就可以正确实现这个复选框的功能。
我希望能帮助澄清这个主题。
I'm currently working on a Backup Application, and I have received a lot of requests for features to be added recently, and the top one of them is adding a checkbox like "Back Up when on Battery Power" like Time Machine has.
So, is there a way I can get the status of the Power Adapter (plugged in and plugged in)? I assume that if one had a Desktop Mac, like iMac, etc, I would probably just get Plugged In all the time. Therefore, I need means of detecting if the computer is a portable or not.
I assume IOKit would be a library to look at, but I simply could not find anything in the docs, that are barely existent anyways on that Framework. Then, since it is an older Carbon Framework, is there a way to register a callback that gets called when that power state changes? That way I can properly implement this checkbox's functionality.
I'd appreciate help in clarifying this subject.
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IOPowerSources.h 有您需要的功能。从
IOPSNotificationCreateRunLoopSource()开始创建运行循环源，并在回调中询问电源信息，从IOPSCopyPowerSourcesInfo()开始一直向下。可能有更好的示例，但此文件 似乎合理地演示了它是如何完成的；足以让你开始。IOPowerSources.h has the functions you need. Start with
IOPSNotificationCreateRunLoopSource()to create a run loop source and in your callback interrogate the power source info starting withIOPSCopyPowerSourcesInfo()and working your way down. There may be better examples, but this file appears to be a reasonable demonstration of how it's done; enough to get you started.