[Visual Basic 2010] - usercontrol problems

[joaquim]

i have code for make the usercontrol transparent:

Protected Overrides ReadOnly Property CreateParams() As CreateParams
        Get

            Dim cp As CreateParams = MyBase.CreateParams

            cp.ExStyle = cp.ExStyle Or &H20
            'WS_EX_TRANSPARENT
            Return cp
        End Get
    End Property

    Protected Sub InvalidateEx()
        Dim rc As Rectangle
        If (Parent Is Nothing) Then Exit Sub
        rc = New Rectangle(Me.Location, Me.Size)
        Parent.Invalidate(rc, True)
    End Sub

Private Sub Sprite2D_OnPaint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles Me.Paint
        Dim a As Bitmap
        If Me.BackgroundImage Is Nothing Then Exit Sub
        a = Me.BackgroundImage
        a.MakeTransparent()
        e.Graphics.DrawImage(a, New Point(0, 0))
    End Sub

these code shows the usercontrol transparent. but when the control moves i see that these control needs time to be transparent or drawing an image
why so many time(maybe 2 seconds)?
and why i can't use directions keys on keydown event?(the arrow keys are ignored)

[joaquim]

for resolve the arrow keys and others, i found these: http://bytes.com/topic/visual-basic-...s-user-control
but i still with transparent problem