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Compiler Error C3723

'function': could not resolve event

function could not resolve which event to call.

The following sample generates C3723:

// C3723.cpp
struct A {
   // To resolve, comment void f(int); and uncomment the __event function
   void f(int);
   // __event void f(int);
   void f(float);


struct B {
   void g(int);
   B(A* a) {
   __hook(&A::f, a, &B::g);   // C3723

int main() {

__hook and __unhook are not compatible with /clr programming. Use the += and -= operators instead.

The following sample generates C3723:

// C3723b.cpp
// compile with: /clr
using namespace System;

public delegate void delegate1();

public ref class CPSource {
   event delegate1^ event1;

public ref class CReceiver {
   void Handler1() {

   void UnhookAll(CPSource^ pSrc) {
      __unhook(&CPSource::event1, pSrc, &CReceiver::Handler1); // C3723
      // Try the following line instead.
      // pSrc->event1 -= gcnew delegate1(this, &CReceiver::Handler1);

int main() {
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