NSObjectNSKeyValueObserverRegistration

objc2_foundation

Trait NSObjectNSKeyValueObserverRegistration 

Source 
pub unsafe trait NSObjectNSKeyValueObserverRegistration:
    ClassType
    + Sized
    + Sealed {
    // Provided methods
    unsafe fn addObserver_forKeyPath_options_context(
        &self,
        observer: &NSObject,
        key_path: &NSString,
        options: NSKeyValueObservingOptions,
        context: *mut c_void,
    ) { ... }
    unsafe fn removeObserver_forKeyPath_context(
        &self,
        observer: &NSObject,
        key_path: &NSString,
        context: *mut c_void,
    ) { ... }
    unsafe fn removeObserver_forKeyPath(
        &self,
        observer: &NSObject,
        key_path: &NSString,
    ) { ... }
}
Available on crate feature NSKeyValueObserving only.
Expand description

Category “NSKeyValueObserverRegistration” on NSObject.

Provided Methods§

Source

unsafe fn addObserver_forKeyPath_options_context( &self, observer: &NSObject, key_path: &NSString, options: NSKeyValueObservingOptions, context: *mut c_void, )

Available on crate feature NSString only.
§Safety
  • observer should be of the correct type.
  • context must be a valid pointer or null.
Source

unsafe fn removeObserver_forKeyPath_context( &self, observer: &NSObject, key_path: &NSString, context: *mut c_void, )

Available on crate feature NSString only.
§Safety
  • observer should be of the correct type.
  • context must be a valid pointer or null.
Source

unsafe fn removeObserver_forKeyPath( &self, observer: &NSObject, key_path: &NSString, )

Available on crate feature NSString only.
§Safety

observer should be of the correct type.

Dyn Compatibility§

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors§