Trait GCButtonElement 

pub unsafe trait GCButtonElement: GCPhysicalInputElement {
    // Provided methods
    unsafe fn pressedInput(&self) -> Retained<AnyObject>
       where Self: Sized + Message { ... }
    unsafe fn touchedInput(
        &self,
    ) -> Option<Retained<ProtocolObject<dyn GCTouchedStateInput>>>
       where Self: Sized + Message { ... }
    unsafe fn forceInput(
        &self,
    ) -> Option<Retained<ProtocolObject<dyn GCLinearInput>>>
       where Self: Sized + Message { ... }
}

Available on crate features GCButtonElement and GCPhysicalInputElement only.

An object conforming to GCButtonElementrepresents a momentary switch, such as a push button. A button’s input only asserts while the user is interacting with it, and then returns to a preferred state (not pressed, not touched).

See also Apple’s documentation

Provided Methods

unsafe fn pressedInput(&self) -> Retained<AnyObject>

where Self: Sized + Message,

Available on crate features GCLinearInput and GCPressedStateInput only.

Get the input containing the pressed state of the button.

unsafe fn touchedInput( &self, ) -> Option<Retained<ProtocolObject<dyn GCTouchedStateInput>>>

where Self: Sized + Message,

Available on crate feature GCTouchedStateInput only.

Get the input containing the touched state of the button.

Some buttons feature capacitive touch capabilities where the user can touch the button without pressing it.

unsafe fn forceInput( &self, ) -> Option<Retained<ProtocolObject<dyn GCLinearInput>>>

where Self: Sized + Message,

Available on crate feature GCLinearInput only.

Get the input containing the measured force applied to the button.

Some buttons feature load cells (also known as button force transducers) capable of measuring applied mechanical force.

Trait Implementations

impl ProtocolType for dyn GCButtonElement

const NAME: &'static str = "GCButtonElement"

The name of the Objective-C protocol that this type represents.

fn protocol() -> Option<&'static AnyProtocol>

Get a reference to the Objective-C protocol object that this type represents.

impl<T> ImplementedBy<T> for dyn GCButtonElement

where T: ?Sized + Message + GCButtonElement,

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl<T> GCButtonElement for ProtocolObject<T>

where T: ?Sized + GCButtonElement,

Implementors