Smart Device Functions:
Type a page name and press Enter. You'll jump to the page if it exists, or you can create it if it doesn't.
To create a page in a module other than ole32, prefix the name with the module name and a period.
The original signature requires a definition for the COM version of IDataObject, as defined in objidl.h. The lack of this definition implies that the System.Windows.Forms.IDataObject interface can be used, but this interface, although COM-visible, is not the same as the COM one and results in a System.InvalidCastException.
The alternative posted uses an object, which can then be passed to a System.Windows.Forms.DataObject ctor. Ideally though there should be a complete definition for the COM IDataObject interface (and all of its supporting types).
Tips & Tricks:
I find it better to turn off PreserveSig for methods that return an HRESULT and have a trailing out parameter, providing that the HRESULT does not have more that one success code (typically S_OK only). This results in a slightly cleaner syntax where the out parameter becomes the return value and a failing HRESULT results in an exception.
C# Sample Code:
Alternative Managed API:
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