Word 2007 File Seems To Be Deleted When You Open And Save It Using DSOFramer

This is one of the interesting cases I had lately. My customer was using DSOFramer sample to host Office Documents, but whenever he tried to open and save Word 2007 documents in this manner, guess what !! the file seems to be deleted !

As I am basically a VB guy I did not want to bother myself with VC++ code of DSOFramer, because I've had easier ways to troubleshoot. The first thing I tried was Process Monitor from sysinternals. I could see that we are moving the file to a temp directory and then while saving it we are saving the changes in it. hmm..strange!

Then I checked DSOFramer code and I realized that IPersist:Save() is returning S_OK, it doesn't look like there is some issue whatsoever. Then moved to Word 2007 code, to me it looks like a bug in the implementation of IPersist:Save().

 

So ..to tackle this I had to modify the code of DSOFramer a bit, being more precise I modified the code of "CDsoDocObject::SaveStorageToFile" [this is in source file dsofdocobj.cpp]. Here is the modified code:

 

 if (SUCCEEDED(hr = m_pole->QueryInterface(IID_IPersistFile, (void**)&pipfile))) 
{ 
    //Get the current open file 
    LPWSTR pwszCurPath = new WCHAR(MAX_PATH+1);
    pipfile->GetCurFile(&pwszCurPath); 
    //Perform save. 
    hr = pipfile->Save(pwszFile, FALSE); 
    pipfile->Release(); 
    //Save results S_OK, but the document is saved to the original location (IPersistFile->GetCurFile) in Word 2007. 
    //We will just check if that's the case and move the file. 
    if (SUCCEEDED(hr) && !FFileExists(pwszFile)) 
    { 
        //We should come here only in case of Word 2007. 
        CopyFileW(pwszCurPath, pwszFile, TRUE); 
    } 
} 

Ok..bye for now.. will be  back in a day with some more, and yes I am starting to do technorati and del.icio.us tagging

 

Technorati tags: DSOFramer, VC++, Office, Office Automation, Troubleshooting, Technorati, del.icio.us

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Comments

• Anonymous
  March 19, 2007
  I've tried this change in my version of the DSOFramer and I get a compile time error as there is no variable available called pwsxCurPath. I downloaded my source from the KB311765 link (same as the one you provide links to). Did you get your source from somewhere else? Asim Shah (asimshah@hotmail.com) Hey..i am sorry ..there was a typo in my code..i corrected it
• Anonymous
  March 28, 2007
  Can someone please send to me the working dsoframer fixed to: jag_vb at. hotmail thnks Hello ..sir, nobody will send it to you. You 'll need to work on it! its a sample, provided as-is, and i am sorry there was a typo in my code, i corrected it
• Anonymous
  January 01, 2008
  According to MSDN, IPersistFile::GetCurFile allocates the string buffer for you so I think there's a memory leak in your code. Here's what I believe to be correct (not yet tested though): //Get the current open file LPWSTR pwszCurPath = NULL; if (S_OK != pipfile->GetCurFile(&pwszCurPath)) { pwszCurPath = NULL; } //Perform save. hr = pipfile->Save(pwszFile, FALSE); pipfile->Release(); //Save results S_OK, but the document is saved to the original location (IPersistFile->GetCurFile) in Word 2007. //We will just check if that's the case and move the file. if (SUCCEEDED(hr) && !FFileExists(pwszFile) && pwszCurPath != NULL) { //We should come here only in case of Word 2007. CopyFileW(pwszCurPath, pwszFile, TRUE); } if (pwszCurPath != NULL) { CoTaskMemFree(pwszCurPath); pwszCurPath = NULL; }