IErrorInfo and ISupporErrorInfo Options

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Roy Chastain   View profile  More options Jan 17 2001, 2:14 pm Newsgroups: microsoft.public.vc.atl From: Roy Chastain [e-mail]> Date: Wed, 17 Jan 2001 14:11:48 -0500 Local: Wed, Jan 17 2001 2:11 pm Subject: Need help with IErrorInfo and ISupporErrorInfo Reply to author | Forward | Print | Individual message | Show original | Report this message | Find messages by this author I have a server that implements ISupportErrorInfo (via check box in ALT template).  I try to access the error return in the client and end up with an exception in Kernel32 in IsBadReadPtr The code in the client is   hRes = m_pIGenLicense->GenerateLicense(&product_version,     &file_version,&OS_version,1,&product_version);   if (hRes != S_OK)     {           _bstr_t                       temp;          CComPtrIErrorInfo> pError;          CComBSTR         strError;          GetErrorInfo(0, &pError);          pError->GetDescription(&strError);          temp = strError;          ::MessageBox(NULL,temp, _T("Error"), MB_ICONEXCLAMATION);     } The error occurs on the call to GetErrorInfo(&pError); I admit I don't understand this part AT ALL and I was only able to find one example, (which I tried to copy). PS.  The server class was derived from ISupportErrorInfo not ISupportErrorInfoImpl as suggested by the books on the subject.  I have tried both with the same lack of results. Complied with July 2000 Platform SDK and VC 6.0 SP 4 with ATLBASE.H replaced by the one from the SDK. Thanks for the help ------------------------------------------- Roy Chastain KMSystems, Inc.     Reply to author    Forward   You must Sign in before you can post messages. To post a message you must first join this group. Please update your nickname on the subscription settings page before posting. You do not have the permission required to post.

Jon Dahl   View profile  More options Jan 17 2001, 3:10 pm Newsgroups: microsoft.public.vc.atl From: "Jon Dahl" [e-mail]> Date: Wed, 17 Jan 2001 14:01:37 -0600 Local: Wed, Jan 17 2001 3:01 pm Subject: Re: Need help with IErrorInfo and ISupporErrorInfo Reply to author | Forward | Print | Individual message | Show original | Report this message | Find messages by this author The problem is: CComPtrIErrorInfo> pError; Don't declare a smart pointer. Let the GetErrorInfo function allocate the interface for you. IErrorInfo* pError = NULL; GetErrorInfo(0, &pError); if(pError != NULL) {     .... Get the description here. } pError->Release(); Good luck, JD Roy Chastain [e-mail]> wrote in message news:[e-mail]... > I have a server that implements ISupportErrorInfo (via check box in > ALT template).  I try to access the error return in the client and end > up with an exception in Kernel32 in IsBadReadPtr > The code in the client is >   hRes = m_pIGenLicense->GenerateLicense(&product_version, >     &file_version,&OS_version,1,&product_version); >   if (hRes != S_OK) >     { >           _bstr_t temp; >          CComPtrIErrorInfo> pError; >          CComBSTR         strError; >          GetErrorInfo(0, &pError); >          pError->GetDescription(&strError); > temp = strError; >          ::MessageBox(NULL,temp, _T("Error"), MB_ICONEXCLAMATION); >     } > The error occurs on the call to GetErrorInfo(&pError); > I admit I don't understand this part AT ALL and I was only able to > find one example, (which I tried to copy). > PS.  The server class was derived from ISupportErrorInfo not > ISupportErrorInfoImpl as suggested by the books on the subject.  I > have tried both with the same lack of results. > Complied with July 2000 Platform SDK and VC 6.0 SP 4 with ATLBASE.H > replaced by the one from the SDK. > Thanks for the help > ------------------------------------------- > Roy Chastain > KMSystems, Inc. - Hide quoted text - - Show quoted text -     Reply to author    Forward   You must Sign in before you can post messages. To post a message you must first join this group. Please update your nickname on the subscription settings page before posting. You do not have the permission required to post.

Roy Chastain   View profile  More options Jan 17 2001, 3:38 pm Newsgroups: microsoft.public.vc.atl From: Roy Chastain [e-mail]> Date: Wed, 17 Jan 2001 15:34:12 -0500 Local: Wed, Jan 17 2001 3:34 pm Subject: Re: Need help with IErrorInfo and ISupporErrorInfo Reply to author | Forward | Print | Individual message | Show original | Report this message | Find messages by this author Thanks, but I am afraid that did not work either.  It still get the error.  Could this possible mean that the error info built by the server is in an invalid format or something like that?  I have not faith that I got that part right either. On Wed, 17 Jan 2001 14:01:37 -0600, "Jon Dahl" [e-mail]> wrote: >The problem is: >CComPtrIErrorInfo> pError; >Don't declare a smart pointer. Let the GetErrorInfo function allocate the >interface for you. >IErrorInfo* pError = NULL; >GetErrorInfo(0, &pError); >if(pError != NULL) >{ >    .... Get the description here. >} >pError->Release(); >Good luck, >JD >Roy Chastain [e-mail]> wrote in message >news:[e-mail]... >> I have a server that implements ISupportErrorInfo (via check box in >> ALT template).  I try to access the error return in the client and end >> up with an exception in Kernel32 in IsBadReadPtr >> The code in the client is >>   hRes = m_pIGenLicense->GenerateLicense(&product_version, >>     &file_version,&OS_version,1,&product_version); >>   if (hRes != S_OK) >>     { >>           _bstr_t temp; >>          CComPtrIErrorInfo> pError; >>          CComBSTR         strError; >>          GetErrorInfo(0, &pError); >>          pError->GetDescription(&strError); >> temp = strError; >>          ::MessageBox(NULL,temp, _T("Error"), MB_ICONEXCLAMATION); >>     } >> The error occurs on the call to GetErrorInfo(&pError); >> I admit I don't understand this part AT ALL and I was only able to >> find one example, (which I tried to copy). >> PS.  The server class was derived from ISupportErrorInfo not >> ISupportErrorInfoImpl as suggested by the books on the subject.  I >> have tried both with the same lack of results. >> Complied with July 2000 Platform SDK and VC 6.0 SP 4 with ATLBASE.H >> replaced by the one from the SDK. >> Thanks for the help >> ------------------------------------------- >> Roy Chastain >> KMSystems, Inc. ------------------------------------------- Roy Chastain KMSystems, Inc. - Hide quoted text - - Show quoted text -     Reply to author    Forward   You must Sign in before you can post messages. To post a message you must first join this group. Please update your nickname on the subscription settings page before posting. You do not have the permission required to post.

Ken Brady   View profile  More options Jan 18 2001, 8:54 am Newsgroups: microsoft.public.vc.atl From: "Ken Brady" [e-mail]> Date: Thu, 18 Jan 2001 08:43:54 -0500 Local: Thurs, Jan 18 2001 8:43 am Subject: Re: Need help with IErrorInfo and ISupporErrorInfo Reply to author | Forward | Print | Individual message | Show original | Report this message | Find messages by this author Has your server called CComCoClass::Error(...) before returning its error code to the client? kb "Roy Chastain" [e-mail]> wrote in message news:[e-mail]... > I have a server that implements ISupportErrorInfo (via check box in > ALT template).  I try to access the error return in the client and end > up with an exception in Kernel32 in IsBadReadPtr > The code in the client is >   hRes = m_pIGenLicense->GenerateLicense(&product_version, >     &file_version,&OS_version,1,&product_version); >   if (hRes != S_OK) >     { >           _bstr_t temp; >          CComPtrIErrorInfo> pError; >          CComBSTR         strError; >          GetErrorInfo(0, &pError); >          pError->GetDescription(&strError); > temp = strError; >          ::MessageBox(NULL,temp, _T("Error"), MB_ICONEXCLAMATION); >     } > The error occurs on the call to GetErrorInfo(&pError); > I admit I don't understand this part AT ALL and I was only able to > find one example, (which I tried to copy). > PS.  The server class was derived from ISupportErrorInfo not > ISupportErrorInfoImpl as suggested by the books on the subject.  I > have tried both with the same lack of results. > Complied with July 2000 Platform SDK and VC 6.0 SP 4 with ATLBASE.H > replaced by the one from the SDK. > Thanks for the help > ------------------------------------------- > Roy Chastain > KMSystems, Inc. - Hide quoted text - - Show quoted text -     Reply to author    Forward   You must Sign in before you can post messages. To post a message you must first join this group. Please update your nickname on the subscription settings page before posting. You do not have the permission required to post.

Roy Chastain   View profile  More options Jan 18 2001, 9:20 am Newsgroups: microsoft.public.vc.atl From: Roy Chastain [e-mail]> Date: Thu, 18 Jan 2001 09:13:42 -0500 Local: Thurs, Jan 18 2001 9:13 am Subject: Re: Need help with IErrorInfo and ISupporErrorInfo Reply to author | Forward | Print | Individual message | Show original | Report this message | Find messages by this author Lets that I put the code in and it appears to being called. On Thu, 18 Jan 2001 08:43:54 -0500, "Ken Brady" [e-mail]> wrote: >Has your server called CComCoClass::Error(...) before returning its error >code to the client? >kb >"Roy Chastain" [e-mail]> wrote in message >news:[e-mail]... >> I have a server that implements ISupportErrorInfo (via check box in >> ALT template).  I try to access the error return in the client and end >> up with an exception in Kernel32 in IsBadReadPtr >> The code in the client is >>   hRes = m_pIGenLicense->GenerateLicense(&product_version, >>     &file_version,&OS_version,1,&product_version); >>   if (hRes != S_OK) >>     { >>           _bstr_t temp; >>          CComPtrIErrorInfo> pError; >>          CComBSTR         strError; >>          GetErrorInfo(0, &pError); >>          pError->GetDescription(&strError); >> temp = strError; >>          ::MessageBox(NULL,temp, _T("Error"), MB_ICONEXCLAMATION); >>     } >> The error occurs on the call to GetErrorInfo(&pError); >> I admit I don't understand this part AT ALL and I was only able to >> find one example, (which I tried to copy). >> PS.  The server class was derived from ISupportErrorInfo not >> ISupportErrorInfoImpl as suggested by the books on the subject.  I >> have tried both with the same lack of results. >> Complied with July 2000 Platform SDK and VC 6.0 SP 4 with ATLBASE.H >> replaced by the one from the SDK. >> Thanks for the help >> ------------------------------------------- >> Roy Chastain >> KMSystems, Inc. ------------------------------------------- Roy Chastain KMSystems, Inc. - Hide quoted text - - Show quoted text -     Reply to author    Forward   You must Sign in before you can post messages. To post a message you must first join this group. Please update your nickname on the subscription settings page before posting. You do not have the permission required to post.

Allen Weng   View profile  More options Jan 29 2001, 3:01 am Newsgroups: microsoft.public.vc.atl From: [e-mail] (Allen Weng) Date: Mon, 29 Jan 2001 07:54:23 GMT Local: Mon, Jan 29 2001 2:54 am Subject: Re: Need help with IErrorInfo and ISupporErrorInfo Reply to author | Forward | Print | Individual message | Show original | Report this message | Find messages by this author I have no problem using IErrorInfo. I have a simple server that creates and sets error object, and a client on another end to retrieve the error object. It always runs successfully. All are written in ATL. In the server, create and set an error object like below:         ICreateErrorInfo* pcei;         IErrorInfo* pei;         HRESULT hr;         hr = CreateErrorInfo(&pcei);         hr = pcei->QueryInterface(IID_IErrorInfo, (LPVOID*) &pei);         if (SUCCEEDED(hr))         {                 SetErrorInfo(0, pei);                 pei->Release();         }         pcei->Release();         return E_FAIL; In the client side, retrieve the erro object:         HRESULT hr;         IErrTest* pErrTest;         hr = ::CoCreateInstance(CLSID_ErrTest, NULL, CLSCTX_ALL, IID_IErrTest, (void**)&pErrTest);         if (FAILED(hr))                 return;         hr = pErrTest->CallException(); // An exception is generated in the server.         if (FAILED(hr))         {                 ISupportErrorInfo *pSupport;                 hr = pErrTest->QueryInterface(IID_ISupportErrorInfo, (void**)&pSupport);                 if (SUCCEEDED(hr))                 {                         hr = pSupport->InterfaceSupportsErrorInfo(IID_IErrTest);                         if (hr == S_OK) {                                 IErrorInfo *pErrorInfo;                                 hr = GetErrorInfo(0, &pErrorInfo);                                 if (SUCCEEDED(hr)) {                                         pErrorInfo->Release();                                 }                         }                         pSupport->Release();                 }         } I never run into the similar problem before. Just curious about how to reproduce your problem. -- Allen