AkelPad

would be cool to have hex code of highlighted character displayed in the status bar

even cooler would be the ability to edit the hex code

In AkelPad's options (either HKCU\Software\Akelsoft\Akelpad in Registry or inside "AkelPad.ini"), under the section "Options", add the following:
StatusUserFormat='%cl' 0x%cH
For more info, read "AkelHelp-Eng.htm#ch4"

Yes, cool indeed, thanks.

I guess you could edit non-displayed codes using Search/Replace.
But it would be very nice if you could edit the hex code inside the status window itself.