Type Definition glutin::api::glx::XlibErrorHookRegistrar

pub type XlibErrorHookRegistrar = Box<dyn Fn(Box<dyn Fn(*mut c_void, *mut c_void) -> bool + Send + Sync>)>;

Available on glx_backend only.

When using Xlib we need to get errors from it somehow, however creating inner XDisplay to handle that or change the error hook is unsafe in multithreaded applications, given that error hook is per process and not connection.

The hook registrar must call to the function inside xlib error handler.

The bool value returned by that hook tells wether the error was handled by it or not. So when it returns true it means that your error handling routine shouldn’t handle the error as it was handled by the hook already.