Hi Sune Henriksen,
Please explain in more details what do you mean by "not possible". There is currently limitation in the UI that is used to generate (from the property grid) the InputBinding and serialize it. Indeed, you can not enter the function keys through the UI, but when serialized, you can try and change it in the code behind in the generated code.
Please tell us whether you are experiencing the problem described or are there any additional issues related. Thank you in advance.
All the best,
the Telerik team
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