Struct QmlMethodInvoker 

pub struct QmlMethodInvoker { /* private fields */ }

A thread-safe handle for invoking slots and signals on a QObjectHolder.

Calls are scheduled on the Qt event loop and execute on the Qt thread. If the target object has been dropped, calls are silently discarded.

When a call executes, Qt borrows the Rc<RefCell<_>> held by the QML engine. If the object is already mutably borrowed on the Qt thread at that moment, the call will panic.

Obtain an instance via QObjectHolder::get_qml_method_invoker.

Example

let backend = Backend::default_with_attached_qobject();
let invoker = backend.borrow().get_qml_method_invoker();
std::thread::spawn(move || {
    invoker.invoke_method("dataReady");
}).join().unwrap();

Implementations

impl QmlMethodInvoker

pub fn new<T>(target: &T) -> QmlMethodInvoker

where T: QObjectHolder,

Creates a QmlMethodInvoker for target and tracks its lifetime.

Prefer QObjectHolder::get_qml_method_invoker over calling this directly.

pub fn invoke_method(&self, name: &str) -> bool

Schedules name to run on the Qt thread via the Qt event loop.

name must be a qslot or qsignal on the target object. Returns false if the target has been dropped or name is not found; returns true otherwise.

pub fn invoke_method_with_args( &self, name: &str, args: &QList<QVariant>, ) -> bool

Schedules name to run on the Qt thread via the Qt event loop, passing args to the method.

name must be a qslot or qsignal on the target object. Returns false if the target has been dropped, name is not found, or the argument types do not match the method signature; returns true otherwise.

Trait Implementations

impl Send for QmlMethodInvoker