Does delegatecall pass up the events?

Question

I want to use delegatecall in one function to populate an event from the contract I'm calling. Here's a minimal example:

contract Caller {
    address public callee;

    function Caller(address _callee) {
        callee = _callee;
    }

    function delegate() {
        callee.delegatecall(bytes4(keccak256("call()")));
    }
}

contract Callee {
    function call() {
        Log(msg.sender);
    }
    event Log(address sender);
  }

However, the receipt I get in my truffle contracts return an empty array for the logs. Does delegatecall not push the log into the receipt?

I want to be able to "return" a value from the delegatecall.

Answer 1

Your Callee contract is declaring the event but you have to emit it.

contract Callee {

    event Log(address sender);
    
    function call() {
       emit Log(msg.sender);
    }
}

Also note that a contract cannot listen to another contract event. So you will have to listen to Callee events from the front end.