[ignore the checkmark] Self made txtBox menu Undo problems

[longwolf]

I'm blocking the standard popup menu on a textbox and replacing it with my own.
I'd like to keep most of the standard commands and add a few more.

If I use my code too Cut or Delete text, then Ctrl+z from the keyboard and my Undo code won't work.
If I Cut or Delete using the keyboard they do work.

I'm posting a cut down version of the code for testing.