_com_error::HelpContext
Visual Studio 2015
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Microsoft Specific**
Calls IErrorInfo::GetHelpContext function.
DWORD HelpContext( ) const throw( );
Returns the result of IErrorInfo::GetHelpContext for the IErrorInfo object recorded within the _com_error object. If no IErrorInfo object is recorded, it returns a zero.
Any failure while calling the IErrorInfo::GetHelpContext method is ignored.
END Microsoft Specific
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