Question

我正在使用DDHotKey来跟踪某些系统范围的键盘快捷键。当事件被触发时，只有我的应用程序才能获得它。是否可以在不阻止事件传递到其原始目标应用程序的情况下进行观察？

以下是此模块如何注册事件处理程序：

InstallApplicationEventHandler(&dd_hotKeyHandler, 1, &eventSpec, NULL, NULL);

事件处理程序本身：

OSStatus dd_hotKeyHandler(EventHandlerCallRef nextHandler, EventRef theEvent, void *userData) {
    @autoreleasepool {
        EventHotKeyID hotKeyID;
        GetEventParameter(theEvent, kEventParamDirectObject, typeEventHotKeyID, NULL, sizeof(hotKeyID),NULL,&hotKeyID);

        UInt32 keyID = hotKeyID.id;

        NSPredicate *predicate = [NSPredicate predicateWithFormat:@"hotKeyID = %u", keyID];
        NSSet *matchingHotKeys = [[DDHotKeyCenter sharedHotKeyCenter] hotKeysMatchingPredicate:predicate];
        if ([matchingHotKeys count] > 1) { NSLog(@"ERROR!"); }
        DDHotKey *matchingHotKey = [matchingHotKeys anyObject];

        NSEvent *event = [NSEvent eventWithEventRef:theEvent];
        NSEvent *keyEvent = [NSEvent keyEventWithType:NSKeyUp
                                             location:[event locationInWindow]
                                        modifierFlags:[event modifierFlags]
                                            timestamp:[event timestamp]
                                         windowNumber:-1
                                              context:nil
                                           characters:@""
                          charactersIgnoringModifiers:@""
                                            isARepeat:NO
                                              keyCode:[matchingHotKey keyCode]];

        [matchingHotKey invokeWithEvent:keyEvent];
    }

    return noErr;
}

Answer 1

不，热键功能的全部内容是注册密钥的应用程序吞下了该事件。

你想要一个global event monitor，它可以让你观察到系统中任何其他地方的关键事件，但不会影响它们。

[NSEvent addGlobalMonitorForEventsMatchingMask:NSKeyUpMask
                                       handler:^(NSEvent * event){
    // See if the key is the one you want and act on it.
}];

DDHotKey - 跟踪而不取消事件

1 个答案: