Struct qmetaobject::connections::ConnectionHandle

#[repr(C)]
pub struct ConnectionHandle { /* fields omitted */ }

Wrapper for QMetaObject::Connection class.

Qt documentation

Represents a handle to a signal-slot (or signal-functor) connection.

It can be used to check if the connection is valid and to disconnect it using QObject::disconnect(). For a signal-functor connection without a context object, it is the only way to selectively disconnect that connection.

As Connection is just a handle, the underlying signal-slot connection is unaffected when Connection is destroyed or reassigned.

Implementations

impl ConnectionHandle

pub fn disconnect(&mut self)

Wrapper for bool QObject::disconnect(const QMetaObject::Connection &connection) static member.

Qt documentation

Disconnect a connection.

If the connection is invalid or has already been disconnected, do nothing and return false.

pub fn is_valid(&self) -> bool

Wrapper for bool QMetaObject::Connection::operator bool() const operator.

Returns true if the connection is valid.

Trait Implementations

impl Clone for ConnectionHandle

fn clone(&self) -> Self

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Default for ConnectionHandle

fn default() -> Self

Returns the “default value” for a type.

impl Drop for ConnectionHandle

fn drop(&mut self)

Executes the destructor for this type.