Composite control with custom control

[Frédéric Mayot]

Hi,
I have a custom composite webcontrol (Frameset) which inherits from the
panel webcontrol. This control uses another control named Menu. If I don't
add mMenu with Controls.Add(mMenu), the menu doesn't render when
mMenu.RenderControl(writer) is invoked. But, if I put Controls.Add(mMenu),
the control is rendered twice (which is normal since I call
MyBase.RenderChildren(writer)).
What should I do ?
Thanks
Fred

<ToolboxData("<{0}:Frameset runat=server></{0}:Frameset>")> _
Public Class Frameset
Inherits System.Web.UI.WebControls.Panel
Implements INamingContainer

Dim mMenu As Menu

Protected Overrides Sub RenderChildren(ByVal writer As
System.Web.UI.HtmlTextWriter)
writer.Write('blabla")
mMenu.RenderControl(writer)
writer.Write("blabla")
MyBase.RenderChildren(writer)
writer.Write("blabla")
End Sub

Protected Overrides Sub CreateChildControls()
MyBase.CreateChildControls()
mMenu = New Menu
Controls.Add(mMenu)
End Sub