How to return VT_EMPTY from a COM server

Juan Carlos CORUÑA jcc at ibdosnorte.com
Mon Oct 7 12:25:01 CEST 2002


Hello all,

To  resolve a problem I had with a COM server I developed, I have
reached to the following conclusion: I must return the variant
VT_EMPTY from a method of the COM server. As exposed in the book
"Python Programming on win32" pythoncom can translate between them
seamlessly. The variant types VT_NULL and VT_EMPTY are translated to
python None, but the inverse only works from None to VT_NULL.

Then the questions is: How can I return VT_EMPTY (not VT_NULL)?



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