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Compiler Error C3117

  • Artikkeli

'%$S' : an interface can only have one base class

You declared an interface that inherits from multiple base classes.

The following sample generates C3117:

// C3117.cpp
#include <windows.h>

[ object, uuid("00000000-0000-0000-0000-000000000001") ]
__interface I1
{
};

[ object, uuid("00000000-0000-0000-0000-000000000002") ]
__interface I2
{
};

[ object, uuid("00000000-0000-0000-0000-000000000003") ]
__interface I3 : I1, I2
{   // C3117
};