VB.NET disable fade-in for forms

Question

I want to disable the form fade-in effect for a window. I think I found the right function

 _
Private Sh         


        

Answer 1

What works for me is

    If Environment.OSVersion.Version.Major >= 6 Then
        DwmSetWindowAttribute(Me.Handle, DWMWINDOWATTRIBUTE.DWMWA_TRANSITIONS_FORCEDISABLED, 1, 4)
    End If

But that is just a guess. I am not sure if "1" stands for YES, and I am not sure if the length 4 is correct under all conditions. Having this confirmed would be great. Thank you!