Compiler Error C3718
Visual Studio 2015
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The latest version of this topic can be found at Compiler Error C3718.
can only call 'event' in the context of a member function of the receiving class
The eventcan only be called from the receiving class.
The following sample generates C3718:
// C3718.cpp
#define _ATL_ATTRIBUTES 1
#include "atlbase.h"
#include "atlcom.h"
[module(name="test")];
[object, uuid("00000000-0000-0000-0000-000000000001")]
__interface I
{
HRESULT f();
};
[event_source(com), coclass, uuid("00000000-0000-0000-0000-000000000002")]
struct E
{
__event __interface I;
};
[event_receiver(com)]
struct R
{
void b()
{
printf_s("B::bar()\n");
}
void HookAndRun(E* pE)
{
__hook(&I::f, pE->GetUnknown(), &R::b);
__raise pE->f();
}
};
int main()
{
CComObject<E>* pE;
CComObject<E>::CreateInstance(&pE);
__hook(&I::f, pE->GetUnknown(), &R::b, &r); // C3718
__raise pE->f();
// try the following lines instead
// R r;
// r.HookAndRun(pE);
}
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