Contents

setActionQueue:action:

Sets the action to perform on the specified dispatch queue when the slider’s value changes.

Declaration

- (void) setActionQueue:(dispatch_queue_t) actionQueue action:(void (^)(float newValue)) action;

Parameters

  • actionQueue:

    A dispatch queue on which to call the action.

  • action:

    The action to perform in response to changes to the slider’s value.

Discussion

If the action modifies a property of the camera system, the specified dispatch queue must represent the camera system’s same exclusive execution context (see isSameExclusiveExecutionContext(other:)).