#import CGDisplayStreamRef SLSDFRDisplayStreamCreate(int displayID, dispatch_queue_t queue, CGDisplayStreamFrameAvailableHandler handler); CGSize DFRGetScreenSize(void); void DFRSetStatus(int); void DFRFoundationPostEventWithMouseActivity(NSEventType type, CGPoint point); @interface NSWindow (Private) - (void)_setPreventsActivation:(bool)preventsActivation; @end