Can we catch keyboard event triggered by an inputfiled?

Hi all,
I have a question here:
When we are doing the web dynpro abap development, if I want to catch the keyboard triggered by an
input help and handle it, how can I achieve this?
e.g. I have an inputfield on the UI, if user click "F10" on the keyboard, can I catch this kind of event?
Thanks and Regards,
Aaron

Hi Thomas,
Yes, I'm trying to acomplish an input help for an inputfield.But, the free programmed value or OVS or dictionary search help can fullfill my needs.Here is the situation:
I have a inputfield on the UI, and next to that , I have another textview, which should be changed according inputfield. e.g. the inputfield is a user name, and next to that , is the user id. but we only want the input help for user name. so when user select one row iof the search result table, I want that two fields both filled.
1. the OVS can't meet my need because I can't change the layout of the search result table, I need a table with a tree in it.
2. free programmed value help can only send back the value of the inputfield. although maybe I can get the user_id's context attribute name and by hardcoding and send back also the user id. but I don't like hardcoding.
So, I'm wondering whether I could catch the keyboard event. and handle the F4 help all by myself.
Do you have some suggestion on this?
Thanks and Regards,
Aaron

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Can we catch keyboard event triggered by an inputfiled?

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