DirectX C# - creating a button

[2hdass]

I am trying to create a UI for my DirectDraw interface that replaces the getto Today screen in Windows Mobile 6. I am using C# managed code to develop the interface. I realize that there is something called DXUT in the .Net framework that provides functionalty of a UI elements such as a UI Button. Is there such thing for the mobile framework? If not, I will have to implement my own button. How do i raise an event that checks if the mousetap is within bounds of a button? Do i actually have to implement the code to continously check if the mouse is inside the bounds of the button? Would that cause a high cpu utilization? Some kind of threading? please advice :D