Hello, I design a form that use keydown event such as F1, F2, F3 and so on. The form have access right according to the user logging in. If user is an admin then the user will have the right to access all the form. However, if the user is a normal user then the user will only have access to certain form only. For example, to open Form1, user can press button F1 to open the form. How can i disable it if user don't have the right to access the form?