You can't actually detect the enter key being pressed, but you can make it so a button is clicked when you press enter.
For example, let's say you're writing a chat client and you have a "Send" button to send a message, you could make pressing enter in the editbox do the same as pressing Send.
Is that what you want?
Edit, here's an example:
dialog EE {
title "Enter Example"
size -1 -1 158 24
option dbu
button "Test", 1, 121 12 37 12, ok
edit "", 2, 0 0 158 10, result
}
on *:dialog:EE:sclick:1:{
.echo -q $input(You clicked "Test" or pressed Enter!,oid,Click!)
halt
}Because the editbox (id 2) has the "result" property specified, the ok button (id 1) is clicked when you press enter, when the button is clicked you must add a /halt otherwise the dialog will close.
