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by yoklov 4057 days ago
RM vs IM is entirely about where the name (id, pointer, whatever) of the widgets comes from. In RM it comes from the library, and is typically a pointer to some data that represents the 'widget', and in IM it comes from the user and is frequently a string or other local pointer (sometimes macros are used to generate IDs).

Anyway, there's no reason this would be harder to do in IM, other than that a lot of people are more familiar implementing RM than IM.