Windows programming and compatibility question

[ahammad]

Sorry, couldn't think of a more descriptive title.

I have a small program that reads in Word Documents. The program has been developed in Visual Studio 2005 in Windows Vista. The program also reads in Word Documents with Microsoft Office 2007.

Here is the issue. When I put the same project on a different machine, running Windows XP, Office 2003, and Visual Studio 2005, it crashes as soon as I try to open the Word document. I put the whole project on the machine and did a clean rebuild/compile. I also tried putting a working executable, and that crashes too.

However, when I do the same thing on a third machine with XP, and Office 2007, it works.

This leads me to believe that the code only works for Office 2007. It worked on both machines running Office 2007 (and different OS).

What could be the cause of this? Built in libraries or anything like that?

Thanks a lot.

Edit:

If it hleps any, here is the code where the file open function is implemented:

void CAudioPlayerMFCDlg::OnBnClickedPlayButton()
{
    _Application wordApp;
    CString id("Word.Application");
    BOOL status = wordApp.CreateDispatch(id);
    _Document myDoc;
    COleVariant covTrue((short)TRUE);
    COleVariant covFalse((short)FALSE);
    COleVariant covOptional((long)DISP_E_PARAMNOTFOUND, VT_ERROR);
    Documents docs = wordApp.GetDocuments();
    CString ReportFileName("C:\\test.doc");
    myDoc = docs.Open(COleVariant(ReportFileName),
                                covOptional,
                                covFalse,  // ReadOnly
                                covOptional,
                                covOptional,
                                covOptional,
                                covOptional,
                                covOptional,
                                covOptional,
                                covOptional,
                                covOptional,
                                covOptional);
    wordApp.SetVisible(TRUE); //when i step to here in debugger, it crashes
    wordApp.Activate();
 
    // It is very important to set the user control after we're done.
    // If we don't do that, Word will assume that we are still in control
    // and will not "quit" or close the document when the user quits.
    myDoc.SetUserControl(TRUE);
}

[weaknessforcats]

You have your answer: Office 2003 isn't the same as Office 2007. Office is backward compatible. That is, Office 2007 can use Office 2003 files but not vice versa.

Whether you use Vista or XP should not be an issue unless you are using some Vista-specific API's.

[ahammad]

I'm still having problems and I really need some help.

This code worked for Vista with Office 2007 and XP with Office 2007. My machine is running XP with Office 2003. At first, I thought that Office was causing the program.

So I got a copy of Office 2007 and tried a clean build of the project. I also tried the executable. It still crashes at the same place.

I am all out of ideas for now. The program works, just not on my machine (now running XP and Office 2007) I have no idea what else I can do.

Thanks

[weaknessforcats]

So you have a machine with XP and Office 2007 that works.
Then you have your other machine that has XP and Office 2007 that crashes.

Do I have that right?

Question: Are both machines running XP with Service Pack 2??

[ahammad]

So you have a machine with XP and Office 2007 that works.
Then you have your other machine that has XP and Office 2007 that crashes.

Do I have that right?

Question: Are both machines running XP with Service Pack 2??

Yes, you have that right. Both machines are running SP2.