Painting a Toolbars' background

[Robin Tucker]

I'm trying to gradient fill my toolbar background. I've derived a new
toolbar from the existing one, calling it GradientToolbar, I've set it's
style to userpaint and I've overridden the OnPaintBackground method and
OnPaint methods. Now, I've got a nice shiney background, but no toolbar
buttons (or anything come to think of it - none of the buttons are drawn)!
What am I missing here?
In the parent container "New" event, after InitialiseComponent, I write this
to set the toolbar style:
Dim theMethod As System.Reflection.MethodInfo =
ViewToolbar.GetType().GetMethod( _"SetStyle", _

Reflection.BindingFlags.NonPublic Or _

Reflection.BindingFlags.Instance)

theMethod.Invoke(ViewToolbar, New Object() { _
ControlStyles.AllPaintingInWmPaint
Or _
ControlStyles.DoubleBuffer Or _
ControlStyles.UserPaint, _
True})
........ and the toolbar class:
Imports System.Drawing.Drawing2D

Public Class GradientToolbar
Inherits ToolBar

Protected Overrides Sub OnPaintBackground(ByVal pevent As
System.Windows.Forms.PaintEventArgs)

Dim BackgroundColour As Brush

BackgroundColour = New LinearGradientBrush( _
New Point(0,
0), _
New Point(0,
Me.Height), _
Color.FromArgb(255,
180, 180, 180), _
Color.FromArgb(255,
100, 100, 100))

pevent.Graphics.FillRectangle(BackgroundColour,
pevent.ClipRectangle)

BackgroundColour.Dispose()

End Sub

Protected Overrides Sub OnPaint(ByVal e As
System.Windows.Forms.PaintEventArgs)

MyBase.OnPaint(e)

End Sub

End Class