ChangeModeCommand, this instruct the Smart Client to change mode -
ShowWorkSpaceCommand instruct the Smart Client show a workspace -
SmartClient.PlaybackCommand, this can used to send to the Playback control -
We don’t have any particular samples for these but we have a KB article, please see Smart Client View and Window tool section -
https://developer.milestonesys.com/s/article/Exploring-the-MIP-SDK-Tool-View-and-Window-Tool
Also, this is the sample that is mentioned in the KB, this tool plug-in sample includes areas that show most of the messages supported in the XProtect Smart Client. I hope it helps you -