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My code works perfectly fine. But just when I add the below line:

cvDisplayOverlay("Camera", "Hey", 4000);

I get this error: unresolved external symbol extern C void __cdecl

I am unable to understand how can I remove the error?

Thanks

My code works perfectly fine. But just when I add the below line:

cvDisplayOverlay("Camera", "Hey", 4000);

I get this error: unresolved external symbol extern C void __cdecl

I am unable to understand how can I remove the error?

Thanks