Are Outlook 2007 File Picker Dialogs customizable?

I am currently trying to figure out how to customize the Outlook 2007 file picker di开发者_如何学Goalogs (such as the "Insert File" dialog for adding an attachment to an email) to include some new functionality. For other applications that use the GetSaveFileName and GetOpenFileName functions from the Win32 API, I was able to use the OFN_ENABLEHOOK method to add my customizations. Since Outlook doesn't use those comdlg32 API functions, this method doesn't work here.

Does anyone know how to do something like this in Outlook? Is it even possible?

Answering my own question: Outlook 2007 on Windows Vista and 7 uses the IFileDialog interfaces, which can be customized / hooked using the IFileDialog::Advise function along with an implementation of the IFileDialogEvents interface. On Windows XP, since the IFileDialog interfaces do not exist, Outlook uses a custom dialog that looks like the common controls dialog, but in fact is completely custom code.