Type Alias EventError 

pub type EventError = Box<dyn Error + Send + Sync + 'static>;

A generic Error wrapper allowing handlers to return errors to the Host caller.

Error handlers can define their own Error type which can be seamlessly converted into this type since it is a Box.

Example

pub struct MyError{ /* ... */ };

fn try_something() -> Result<(), MyError> { /* ... */ }

fn my_handler(process: &mut ProcessState) -> Result<(), HandlerError> {
    // ...
    try_something()?;
    // ...
    Ok(())
}

Aliased Type

pub struct EventError(/* private fields */);