Returns an StdPicture object that represents the custom icon for the folder.
Assembly: Microsoft.Office.Interop.Outlook (in Microsoft.Office.Interop.Outlook.dll)
The returned StdPicture object has its Type property equal to PICTYPE_ICON or PICTYPE_BITMAP.
GetCustomIcon returns Nothing (a null reference (Nothing in Visual Basic) in C#) if the folder does not have a custom folder icon, or if the folder belongs to one of the following groups of folders:
Default folders (as listed by the OlDefaultFolders enumeration)
Special folders (as listed by the OlSpecialFolders enumeration)
Exchange public folders
Root folder of any Exchange mailbox
You can only call GetCustomIcon from code that runs in-process as Outlook. An StdPicture object cannot be marshaled across process boundaries. If you attempt to call GetCustomIcon from out-of-process code, an exception occurs. For more information, see An automation server cannot pass a pointer to the picture object's IPictureDisp implementation across process boundaries.