I've a slight problem with the new control panel MinMax functionality (Show Control Panel?). The control panel of mine solutions have graphical addons. With the new  MinMax functionality I must change a few things in my control panel code ('my minmax graphics').
I've tried to find out how this feature works with tracing the code but I was not really successful. 
Please can anyone tell me how this works or from where can I aquire this information? 

Thank you for your anwser!

In the beginning I tought it should be the method 

Protected Sub cmdVisibility_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles cmdVisibility.Click
            SetVisibility(True)  <-- breakpoint
            Response.Redirect(Request.RawUrl, True)
End Sub

but it's not. When I set the breakpoints here during the debugging session nothing halted - i've no idea why this action does not respond?
 
What I'm looking for the mechanism where I can enage my code. Have you more ideas?