speechLib Warnings

Good Day 

I am Building my add-in but when build it where r many warnings 

could u plz help me ?

Warning1 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". At least one of the arguments for 'SpStreamFormatConverter.GetFormat' cannot be marshaled by the runtime marshaler.  Such arguments will therefore be passed as a pointer and may require unsafe code to manipulate.WSpeech
Warning2 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". At least one of the arguments for 'ISpStreamFormatConverter.GetFormat' cannot be marshaled by the runtime marshaler.  Such arguments will therefore be passed as a pointer and may require unsafe code to manipulate.WSpeech
Warning3 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". At least one of the arguments for 'ISpStreamFormat.GetFormat' cannot be marshaled by the runtime marshaler.  Such arguments will therefore be passed as a pointer and may require unsafe code to manipulate. WSpeech
Warning4 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". At least one of the arguments for 'SpMMAudioIn.GetFormat' cannot be marshaled by the runtime marshaler.  Such arguments will therefore be passed as a pointer and may require unsafe code to manipulate.WSpeech
Warning5 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". At least one of the arguments for 'SpMMAudioIn.GetDefaultFormat' cannot be marshaled by the runtime marshaler.  Such arguments will therefore be passed as a pointer and may require unsafe code to manipulate. WSpeech
Warning6 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". At least one of the arguments for 'ISpMMSysAudio.GetFormat' cannot be marshaled by the runtime marshaler.  Such arguments will therefore be passed as a pointer and may require unsafe code to manipulate. WSpeech
Warning7 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". At least one of the arguments for 'ISpMMSysAudio.GetDefaultFormat' cannot be marshaled by the runtime marshaler.  Such arguments will therefore be passed as a pointer and may require unsafe code to manipulate.WSpeech
Warning8 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". At least one of the arguments for 'ISpAudio.GetFormat' cannot be marshaled by the runtime marshaler.  Such arguments will therefore be passed as a pointer and may require unsafe code to manipulate.WSpeech
Warning9 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". At least one of the arguments for 'ISpAudio.GetDefaultFormat' cannot be marshaled by the runtime marshaler.  Such arguments will therefore be passed as a pointer and may require unsafe code to manipulate. WSpeech
Warning10 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". At least one of the arguments for 'SpMMAudioOut.GetFormat' cannot be marshaled by the runtime marshaler.  Such arguments will therefore be passed as a pointer and may require unsafe code to manipulate. WSpeech
Warning11 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". At least one of the arguments for 'SpMMAudioOut.GetDefaultFormat' cannot be marshaled by the runtime marshaler.  Such arguments will therefore be passed as a pointer and may require unsafe code to manipulate. WSpeech
Warning12 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". At least one of the arguments for 'SpStream.GetFormat' cannot be marshaled by the runtime marshaler.  Such arguments will therefore be passed as a pointer and may require unsafe code to manipulate.WSpeech
Warning13 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". At least one of the arguments for 'ISpStream.GetFormat' cannot be marshaled by the runtime marshaler.  Such arguments will therefore be passed as a pointer and may require unsafe code to manipulate.WSpeech
Warning14 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". At least one of the arguments for 'SpSharedRecoContext.GetAudioOptions' cannot be marshaled by the runtime marshaler.  Such arguments will therefore be passed as a pointer and may require unsafe code to manipulate.WSpeech
Warning15 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". At least one of the arguments for 'ISpRecoContext.GetAudioOptions' cannot be marshaled by the runtime marshaler.  Such arguments will therefore be passed as a pointer and may require unsafe code to manipulate.WSpeech
Warning16 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". At least one of the arguments for 'ISpRecognizer.GetFormat' cannot be marshaled by the runtime marshaler.  Such arguments will therefore be passed as a pointer and may require unsafe code to manipulate. WSpeech
Warning17 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". At least one of the arguments for 'ISpPhrase.GetPhrase' cannot be marshaled by the runtime marshaler.  Such arguments will therefore be passed as a pointer and may require unsafe code to manipulate.WSpeech
Warning18 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". At least one of the arguments for 'ISpPhrase.GetSerializedPhrase' cannot be marshaled by the runtime marshaler.  Such arguments will therefore be passed as a pointer and may require unsafe code to manipulate. WSpeech
Warning19 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". The type library importer could not convert the signature for the member 'SPPHRASE.pProperties'.WSpeech
Warning20 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". The type library importer could not convert the signature for the member 'SPPHRASE.pElements'.WSpeech
Warning21 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". The type library importer could not convert the signature for the member 'SPPHRASE.pReplacements'.WSpeech
Warning22 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". The type library importer could not convert the signature for the member 'SPPHRASE.pSREnginePrivateData'.WSpeech
Warning23 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". The type library importer could not convert the signature for the member 'SPPHRASE.pSemanticErrorInfo'.WSpeech
Warning24 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". The type library importer could not convert the signature for the member 'SPPHRASERULE.pNextSibling'.WSpeech
Warning25 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". The type library importer could not convert the signature for the member 'SPPHRASERULE.pFirstChild'.WSpeech
Warning26 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". The type library importer could not convert the signature for the member 'SPPHRASEPROPERTY.pNextSibling'.WSpeech
Warning27 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". The type library importer could not convert the signature for the member 'SPPHRASEPROPERTY.pFirstChild'.WSpeech
Warning28 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". The type library importer could not convert the signature for the member 'SPPHRASEELEMENT.pszPronunciation'.WSpeech
Warning29 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". At least one of the arguments for 'ISpRecoResult.GetPhrase' cannot be marshaled by the runtime marshaler.  Such arguments will therefore be passed as a pointer and may require unsafe code to manipulate. WSpeech
Warning30 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". At least one of the arguments for 'ISpRecoResult.GetSerializedPhrase' cannot be marshaled by the runtime marshaler.  Such arguments will therefore be passed as a pointer and may require unsafe code to manipulate.WSpeech
Warning31 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". At least one of the arguments for 'ISpRecoResult.Serialize' cannot be marshaled by the runtime marshaler.  Such arguments will therefore be passed as a pointer and may require unsafe code to manipulate. WSpeech
Warning32 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". At least one of the arguments for 'ISpPhraseAlt.GetPhrase' cannot be marshaled by the runtime marshaler.  Such arguments will therefore be passed as a pointer and may require unsafe code to manipulate. WSpeech
Warning33 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". At least one of the arguments for 'ISpPhraseAlt.GetSerializedPhrase' cannot be marshaled by the runtime marshaler.  Such arguments will therefore be passed as a pointer and may require unsafe code to manipulate.WSpeech
Warning34 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". At least one of the arguments for 'SpInprocRecognizer.GetFormat' cannot be marshaled by the runtime marshaler.  Such arguments will therefore be passed as a pointer and may require unsafe code to manipulate. WSpeech
Warning35 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". At least one of the arguments for 'SpInprocRecognizer.GetSerializedState' cannot be marshaled by the runtime marshaler.  Such arguments will therefore be passed as a pointer and may require unsafe code to manipulate.WSpeech
Warning36 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". At least one of the arguments for 'ISpSerializeState.GetSerializedState' cannot be marshaled by the runtime marshaler.  Such arguments will therefore be passed as a pointer and may require unsafe code to manipulate.WSpeech
Warning37 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". At least one of the arguments for 'SpSharedRecognizer.GetFormat' cannot be marshaled by the runtime marshaler.  Such arguments will therefore be passed as a pointer and may require unsafe code to manipulate. WSpeech
Warning38 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". At least one of the arguments for 'SpSharedRecognizer.GetSerializedState' cannot be marshaled by the runtime marshaler.  Such arguments will therefore be passed as a pointer and may require unsafe code to manipulate.WSpeech
Warning39 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". The type library importer could not convert the signature for the member 'SPWORDPRONUNCIATIONLIST.pvBuffer'.WSpeech
Warning40 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". The type library importer could not convert the signature for the member 'SPWORDPRONUNCIATIONLIST.pFirstWordPronunciation'.WSpeech
Warning41 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". The type library importer could not convert the signature for the member 'SPWORDPRONUNCIATION.pNextWordPronunciation'.WSpeech
Warning42 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". The type library importer could not convert the signature for the member 'SPWORDLIST.pvBuffer'.WSpeech
Warning43 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". The type library importer could not convert the signature for the member 'SPWORDLIST.pFirstWord'.WSpeech
Warning44 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". The type library importer could not convert the signature for the member 'SPWORD.pNextWord'.WSpeech
Warning45 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". The type library importer could not convert the signature for the member 'SPWORD.pFirstWordPronunciation'.WSpeech
Warning46 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". The type library importer could not convert the signature for the member 'SPSHORTCUTPAIRLIST.pvBuffer'.WSpeech
Warning47 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". The type library importer could not convert the signature for the member 'SPSHORTCUTPAIRLIST.pFirstShortcutPair'.WSpeech
Warning48 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". The type library importer could not convert the signature for the member 'SPSHORTCUTPAIR.pNextSHORTCUTPAIR'.WSpeech
Warning49 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". At least one of the arguments for 'SpInProcRecoContext.GetAudioOptions' cannot be marshaled by the runtime marshaler.  Such arguments will therefore be passed as a pointer and may require unsafe code to manipulate.WSpeech
Warning50 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". At least one of the arguments for 'SpCustomStream.GetFormat' cannot be marshaled by the runtime marshaler.  Such arguments will therefore be passed as a pointer and may require unsafe code to manipulate. WSpeech
Warning51 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". At least one of the arguments for 'SpFileStream.GetFormat' cannot be marshaled by the runtime marshaler.  Such arguments will therefore be passed as a pointer and may require unsafe code to manipulate. WSpeech
Warning52 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". At least one of the arguments for 'SpMemoryStream.GetFormat' cannot be marshaled by the runtime marshaler.  Such arguments will therefore be passed as a pointer and may require unsafe code to manipulate. WSpeech
Warning53 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". At least one of the arguments for 'ISpXMLRecoResult.GetPhrase' cannot be marshaled by the runtime marshaler.  Such arguments will therefore be passed as a pointer and may require unsafe code to manipulate. WSpeech
Warning54 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". At least one of the arguments for 'ISpXMLRecoResult.GetSerializedPhrase' cannot be marshaled by the runtime marshaler.  Such arguments will therefore be passed as a pointer and may require unsafe code to manipulate.WSpeech
Warning55 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". At least one of the arguments for 'ISpXMLRecoResult.Serialize' cannot be marshaled by the runtime marshaler.  Such arguments will therefore be passed as a pointer and may require unsafe code to manipulate. WSpeech
Warning56 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". At least one of the arguments for 'ISpRecoGrammar2.GetRules' cannot be marshaled by the runtime marshaler.  Such arguments will therefore be passed as a pointer and may require unsafe code to manipulate. WSpeech
Warning57 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". At least one of the arguments for 'IInternetSecurityManager.QueryCustomPolicy' cannot be marshaled by the runtime marshaler.  Such arguments will therefore be passed as a pointer and may require unsafe code to manipulate.WSpeech
Warning58 Processing COM reference "SpeechLib" from path "C:\Windows\System32\Speech\Common\sapi.dll". At least one of the arguments for 'IInternetSecurityMgrSite.GetWindow' cannot be marshaled by the runtime marshaler.  Such arguments will therefore be passed as a pointer and may require unsafe code to manipulate.WSpeech

Thank u :)