xcode - Swift on OS X. How to handle global mouse events? -

i new swift , xcode , have next problem:

i have simple cocoa swift application 1 counter (label).

how handle mouse clicks in mac (in applications) , display in label?

i use xcode 7.3.1.

update 1. have alredy found it's monitoring events , addglobalmonitorforeventsmatchingmask:handler: function in cocoa, i'm not sure i'm on right way.

you correct using addglobalmonitorforeventsmatchingmask:handler:

a simple example might this:

appdelegate.swift

class appdelegate: nsobject, nsapplicationdelegate {      @iboutlet weak var window: nswindow!     @iboutlet var textlabel : nstextfield!     var eventhandler : globaleventmonitor?     var gecount : int = 0      func applicationdidfinishlaunching(anotification: nsnotification) {          eventhandler = globaleventmonitor(mask: .leftmousedownmask, handler: { (mouseevent: nsevent?) in         self.gecount += 1         self.textlabel.stringvalue = "global event monitor: \(self.gecount)"     })     eventhandler?.start()   } } 

globaleventmonitor.swift

public class globaleventmonitor {      private var monitor: anyobject?     private let mask: nseventmask     private let handler: nsevent? -> ()      public init(mask: nseventmask, handler: nsevent? -> ()) {         self.mask = mask         self.handler = handler     }      deinit {         stop()     }      public func start() {         monitor = nsevent.addglobalmonitorforeventsmatchingmask(mask, handler: handler)     }      public func stop() {         if monitor != nil {             nsevent.removemonitor(monitor!)             monitor = nil         }     } } 

_{events delivered asynchronously app , can observe event; cannot modify or otherwise prevent event being delivered original target application. key-related events may monitored if accessibility enabled or if application trusted accessibility access (see axisprocesstrusted).}

note handler not called events sent own application.

in order capture events within app can either use addlocalmonitorforeventsmatchingmask:handler: or nsclickgesturerecognizer object.

if wanted combine global event monitor gesture recognizer object it's matter of implementing both objects class.