# \#command

**URL:** https://discourse.itk.org/tag/command/92.md

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## [Command: Execute with const or non-const object](https://discourse.itk.org/t/command-execute-with-const-or-non-const-object/1587)

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**Author:** [@Gordian](https://discourse.itk.org/u/Gordian)\
**Replies:** 2\
**Last updated:** [February 12, 2019, 12:10pm UTC](https://discourse.itk.org/t/command-execute-with-const-or-non-const-object/1587 "2019-02-12T12:10:27Z")

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Hello, i could not figure out when an itk::Event invokes virtual void Execute (Object \*caller, const EventObject &event) or virtual void Execute (const Object \*caller, const EventObject &event) In both cases the inv…