当码头显示或隐藏时的事件 [英] Events when dock is showing or hiding

问题描述

当Dock显示或隐藏时，如何获取活动？

How can I get events when the Dock is showing or hiding?

推荐答案

可见或不使用碳。我不知道在Cocoa有什么办法。

You can get a notification if the dock is visible or not using Carbon. I do not know of any way to do it in Cocoa.

（我没有测试过，它是从代码此处）

(I haven't tested this; it's from the code here)

创建回调方法：

#import <Carbon/Carbon.h>

static const EventTypeSpec appEvents[] = {
    { kEventClassApplication, kEventAppSystemUIModeChanged }
};

OSStatus DockChangedHandler(EventHandlerCallRef inCallRef, EventRef event, void *userData) {
    OSStatus status = eventNotHandledErr;
    switch(GetEventClass(event)) {
        case kEventClassApplication: {
            SystemUIMode *outMode;
            SystemUIOptions *outOptions;
            GetSystemUIMode(outMode, outOptions);
            status = noErr;
        }
            break;

        default: 
            return;

    }

    /*Insert whatever you want to do when you're notified of a dock change*/

    return status;
}

然后把它放在任何你想开始监听的地方：

And then put this wherever you want to start listening for the notification:

    InstallApplicationEventHandler(NewEventHandlerUPP(DockChangedHandler), GetEventTypeCount(appEvents), appEvents, 0, NULL);

更多信息： http://developer.apple.com/library/mac/#technotes/tn2002/tn2062.html

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