Here is a blog entry on why Microsoft didn't just implement RCWs the way you are suggesting: http://blogs.msdn.com/cbrumme/archive/2003/04/16/51355.aspx
Antony ____________________ Antony Perkov BitBolt Software Ltd Web: www.bitbolt.com -----Original Message----- From: Matthew Wills [mailto:[EMAIL PROTECTED] Sent: 13 April 2005 03:11 Subject: RCW generation with automatic ReleaseCOMObject All, We are automating Word / Excel from VB.NET and ran into the problem where they won't shut down since the garbage collector hasn't garbage collected the objects - so the reference counts of some of the COM objects is > 0. We moved to using ReleaseCOMObject against all the objects, which obviously got rid of the problem. (Note that I am aware that a commonly held view is that the solution is to call GC.Collect until the problem goes away. For a variety of reasons I disagree with this view - mainly since that technique is not *guaranteed* to work. But lets put that to one side for now). Nonetheless, the use of ReleaseCOMObject is quite fiddly, especially when you have to clean up all the intermediate objects as well. As such, I am seeing if there is an easier way. One concept that I *think* would work would be to have all the classes in the RCW implement IDisposable, then in C# / VB.NET 2005 I could use Using to manage the cleanup in a simpler way (the code would still be longer than say the VB 6 equivalent, but would be significantly shorter than currently). So my question is - is there any way to generate a RCW where all the classes implement IDisposable and where Dispose will automatically call ReleaseCOMObject? Thanks Matthew Wills @ MLC Senior Analyst Programmer ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please visit http://www.messagelabs.com/email ______________________________________________________________________ =================================== This list is hosted by DevelopMentor. http://www.develop.com View archives and manage your subscription(s) at http://discuss.develop.com =================================== This list is hosted by DevelopMentor� http://www.develop.com View archives and manage your subscription(s) at http://discuss.develop.com
