Flickerfree Richtextbox : Convert subclassed richtextbox control to dll

[Xancholy]

I found this code to help make a richtextbox control fairly flickerfree.

How can I convert this sublassed control to a dll that I can add to my toolbox ?

Imports System
Imports System.Windows.Forms

Public Class FlickerFreeRichTextbox
    Inherits RichTextBox

    Private Const WM_PAINT As integer = 0
    Public Shared _Paint As Boolean = True

    Public Sub New()
        MyBase.New()
    End Sub

    Protected Overrides Sub WndProc(ByRef m As System.Windows.Forms.Message)
        If (m.Msg = WM_PAINT) Then
            If _Paint Then
                MyBase.WndProc(m)
            Else
                m.Result = IntPtr.Zero
            End If
        Else
            MyBase.WndProc(m)
        End If
    End Sub
End Class

    Private Sub richTextBox1_TextChanged(ByVal sender As Object, ByVal e As System.EventArgs)
        If populating Then
            Return
        End If
        ColorSyntaxEditor.FlickerFreeRichEditTextBox._Paint = false
        'do your processing here
        ColorSyntaxEditor.FlickerFreeRichEditTextBox._Paint = true
    End Sub