Union-within-structure syntax in ctypes

Question

Quick question about ctypes syntax, as documentation for Unions isn\'t clear for a beginner like me.

Say I want to implement an INPUT structure (see here):

Answer 1

Your Structure syntax isn't valid:

AttributeError: '_fields_' must be a sequence of pairs

I believe you want to use the anonymous attribute in your ctypes.Structure. It looks like the ctypes documentation creates a TYPEDESC structure (which is very similar in construction to the tagINPUT).

Also note that you'll have to define DWORD as a base type for your platform.