AsyncBase::CheckValidStateForResultsCall Method
Visual Studio 2015
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Tests whether the results of an asynchronous operation can be collected in the current asynchronous state.
inline HRESULT CheckValidStateForResultsCall();
S_OK if results can be collected; otherwise, E_ILLEGAL_METHOD_CALLE_ILLEGAL_METHOD_CALL.
Header: async.h
Namespace: Microsoft::WRL
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