Compiler Warning (level 1) C4917
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Compiler Warning (level 1) C4917

Error Message

'declarator' : a GUID can only be associated with a class, interface or namespace

A user-defined structure other than class, interface, or namespace cannot have a GUID.

This warning is off by default. See Compiler Warnings That Are Off by Default for more information.

The following code sample generates C4917:

// C4917.cpp
// compile with: /W1
#pragma warning(default : 4917)
__declspec(uuid("00000000-0000-0000-0000-000000000001")) struct S
{
} s;   // C4917, don't put uuid on a struct

int main()
{
}
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