Compiler Error C3721
'signature': incompatible signature for event
An event was declared incorrectly. For more information, see __event.
C3721 is only reachable using /clr:oldSyntax.
Example
The following sample generates C3721.
// C3721.cpp
// compile with: /clr:oldSyntax /c
using namespace System;
public __delegate void MyDel();
public __gc class X {
__event void add_E1(); // C3721
// try the following line instead
// __event void add_E1(MyDel * p);
__event void remove_E1(); // C3721
// __event void remove_E1(MyDel * p);
// try the following line instead
__event void raise_E1();
};