Was this page helpful?
Your feedback about this content is important. Let us know what you think.
Additional feedback?
1500 characters remaining
Export (0) Print
Expand All
Expand Minimize

Compiler Error C3743

can only hook/unhook an entire interface when the 'layout_dependent' parameter of event_receiver is true

The __unhook function varies in the number of parameters that it takes based on the value passed to the layout_dependent parameter in the event_receiver class.

The following sample generates C3743:

// C3743.cpp
#define _ATL_ATTRIBUTES 1
#include <atlbase.h>
#include <atlcom.h>
[module(name="xx")];
[object] __interface I { HRESULT f(); };

[event_receiver(com, layout_dependent=true), coclass]
struct R : I {
        HRESULT f() {
      return 0;
   }
        R() {
   }

   R(I* a) {
      __hook(I, a, &R::f);   // C3743
      // The following line resolves the error.
      // __hook(I, a);
   }
};
Show:
© 2015 Microsoft