Global hotkey registration

test.swift

    var gMyHotKeyID = EventHotKeyID()
    gMyHotKeyID.signature = OSType("swat".fourCharCodeValue)
    gMyHotKeyID.id = UInt32(keyCode)

    var eventType = EventTypeSpec()
    eventType.eventClass = OSType(kEventClassKeyboard)
    eventType.eventKind = OSType(kEventHotKeyPressed)

    // Install handler.
    InstallEventHandler(GetApplicationEventTarget(), {(nextHanlder, theEvent, userData) -> OSStatus in
            var hkCom = EventHotKeyID()
            GetEventParameter(theEvent, EventParamName(kEventParamDirectObject), EventParamType(typeEventHotKeyID), nil, sizeof(EventHotKeyID), nil, &hkCom)

            /// Check that hkCom in indeed your hotkey ID and handle it.
        }, 1, &eventType, nil, nil)

    // Register hotkey.
    let status = RegisterEventHotKey(UInt32(keyCode), UInt32(modifierKeys), gMyHotKeyID, GetApplicationEventTarget(), 0, &hotKeyRef)