DDE Poke to WinWord 2010 with open Document (Format Docx)

Question

We have a DDE Client in a big old software and use Winword 2010 as DDE Server. Execute and request commands works as expected. There is only trouble with sending data via poke and that only if the Word document has the new file format (docx or docm).
Sometimes Word crash, sometimes nothing is happen and sometime not displayable chars appear. It depends on what was sent. If the document format changed to 2003 everything is fine. It's seems Word changes its interpretation of the ASCII text which was send
via DDE poke.
Do we have a chance to use DDE with Winword 2010 and the new document format without rewrite the whole software?

Answer 1

Hi,
As far as I know, Dynamic data exchange (DDE) is an older technology that is not secure. We may use a more secure alternative to DDE in Word 2010, such as object linking and embedding (OLE). Please refer to the link about the tasks
that Word performs with DDE and the methods used to control each task in Visual Basic.
http://msdn.microsoft.com/en-us/library/office/ff837927(v=office.14).aspx
More detailed information:
http://msdn.microsoft.com/en-us/library/windows/desktop/ms648711(v=vs.85).aspx
http://support.microsoft.com/kb/74807/en-us
Then, the issue is more related to Windows desktop Development, I recommend you post the question to MSDN forum:
http://social.msdn.microsoft.com/Forums/windowsdesktop/en-US/home?category=windowsdesktopdev
Regards,
George Zhao
TechNet Community Support