unchangeable text in a textbox

I have a text box that I would like to have text in that the user can not change. For example: the user has to enter a domain name, but the last part of the domain is going to be set by the developer. The domain is meant to look something like this: mywebsite.developer.com The developer.com part is the part of the domain that can not be change, they are about to choose the mywebsite section of the domain. Is there a way to do this in Mendix?
2 answers

Suggestion: have a text box for only the modifyable part. Directly behing it have a 'CustomString' widget displaying the combined value.


The properties of the textbox allow you to set "editable" to "no".