Multiple Instances of Custom Form Regions

In my last post, I considered the final state of the FormRegionStartup interface, with the 2 new methods introduced right at the last minute. This is barely documented (hence my post). Custom form regions in general are barely documented, and another issue that occurs to me is the problem of multiple instances. So, you’ve written…

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GetFormRegionIcon and GetFormRegionManifest

The Outlook FormRegionStartup interface was enhanced right before Office 2007 was released. Two new methods were added. The existing documentation doesn’t explain these methods in any detail – not even in the developer help within Office. The existing VSTO documentation does include mention of the two new methods, but doesn’t explain how to use them….

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