[id(1), helpstring("method GetStr")] HRESULT GetStr([in] BSTR bstr1,[out] BSTR bstr2);//语句
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error MIDL2121 : [out] only parameter must not derive from a top-level [unique] or [ptr] pointer/array : [ Type 'wireBSTR' ( Parameter 'bstr2' ) ]
Error executing midl.exe.//错误信息
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error MIDL2121 : [out] only parameter must not derive from a top-level [unique] or [ptr] pointer/array : [ Type 'wireBSTR' ( Parameter 'bstr2' ) ]
Error executing midl.exe.//错误信息
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