Description

Interface for receiving button press and release events.

Objects which implement this protocol may receive callbacks when these events occur, via delegation from a GrabbaButtonListener object.

Note that this protocol need not be directly implemented; it may be simpler to subclass GrabbaButtonListener and thereby receive the events directly.

Thread safety: This interface is intended to be thread-safe; any classes deriving from it should ensure that the relevant methods are callable from any thread.

See also: GrabbaButtonAPI for related API functions

Instance Methods
(void)	- leftButtonEvent:
	Callback which is invoked when the left button is pressed or released on a connected Grabba device. More...

(void)	- rightButtonEvent:
	Callback which is invoked when the right button is pressed or released on a connected Grabba device. More...

Method Documentation

◆ leftButtonEvent:()

- (void) leftButtonEvent: (BOOL) pressed

Callback which is invoked when the left button is pressed or released on a connected Grabba device.

Note: Implementations of this method are required to be thread-safe; no guarantees are made about which thread(s) they will be called from.

Parameters

pressed YES if the button has just been pressed, or NO if the button has just been released

◆ rightButtonEvent:()

- (void) rightButtonEvent: (BOOL) pressed

Callback which is invoked when the right button is pressed or released on a connected Grabba device.