Outlook 2007 Form Regions and C++ "Jeffrey" <wehjin[ at ]gmail.com> 07.07.2006 18:01:08 Has anyone succeeded in getting Outlook 2007 form regions to work with a C++ add-in? The publicly available sample code is in C# and I have no problem getting that to work. But, I'm running into a wall getting regions to work in C++. If I'm not mistaken, form regions work by having the add-in object supply both the IDTExtensibility2 and the _FormRegionStartup interfaces. To satisfy this, I have my add-in class inherit from two instances of IDispatchImpl, one for each of the interfaces. However, when this add-in is installed in Outlook 2007, the _FormRegionStartup interface never gets used. In the debugger, I can see that the add-in is connected (OnConnection) and that Outlook 2007 calls QueryInterface to obtain the _FormRegionStartup interface. However, Outlook doesn't do anything with the _FormRegionStartup interface once it is available. The functions in the interface are never called. So, if you've succeeded in getting this feature to work in a c++ add-in, did you have any trouble getting there? Would you be willing to post sample code?