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知道系统何时在额外菜单中进入睡眠状态？

发布于 2024-11-08 19:42:08 字数 129 浏览 0 评论 0原文

我为 Mac 开发了一个 Menu Extra（menulet），但我想知道使用 Menu Extra 的机器是否已进入睡眠状态。我实现了一个贪睡功能，但由于它是基于时间的方法，因此相当不可靠。任何提示或建议将不胜感激！

谢谢！

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飘然心甜 2024-11-15 19:42:08

您可能想查看 NSWorkspace。
诀窍是，您需要在 NSWorkspace 的 notificationCenter 上注册通知，而不是默认的通知。请参阅技术问答 QA1340。

示例代码：

- (void) receiveSleepNote: (NSNotification*) note
{
    NSLog(@"receiveSleepNote: %@", [note name]);
}

- (void) fileNotifications
{
    // These notifications are filed on NSWorkspace's notification center, not the default 
    // notification center. You will not receive sleep/wake notifications if you file 
    // with the default notification center.
    [[[NSWorkspace sharedWorkspace] notificationCenter] addObserver:self 
            selector:@selector(receiveSleepNote:) 
            name: NSWorkspaceWillSleepNotification object:nil];
}

You probably want to check out NSWorkspaceWillSleepNotification in NSWorkspace.
The trick is, you need to register for the notifications on NSWorkspace's notificationCenter, not the default one. See Technical Q&A QA1340.

Sample code:

- (void) receiveSleepNote: (NSNotification*) note
{
    NSLog(@"receiveSleepNote: %@", [note name]);
}

- (void) fileNotifications
{
    // These notifications are filed on NSWorkspace's notification center, not the default 
    // notification center. You will not receive sleep/wake notifications if you file 
    // with the default notification center.
    [[[NSWorkspace sharedWorkspace] notificationCenter] addObserver:self 
            selector:@selector(receiveSleepNote:) 
            name: NSWorkspaceWillSleepNotification object:nil];
}

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