form1.vb

OOP With Microsoft VB.NET And Csharp Step By Step

Public Class Form1
    Inherits System.Windows.Forms.Form

#Region " Windows Form Designer generated code "

    Public Sub New()
        MyBase.New()

        'This call is required by the Windows Form Designer.
        InitializeComponent()

        'Add any initialization after the InitializeComponent() call

    End Sub

    'Form overrides dispose to clean up the component list.
    Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
        If disposing Then
            If Not (components Is Nothing) Then
                components.Dispose()
            End If
        End If
        MyBase.Dispose(disposing)
    End Sub

    'Required by the Windows Form Designer
    Private components As System.ComponentModel.Container

    'NOTE: The following procedure is required by the Windows Form Designer
    'It can be modified using the Windows Form Designer.  
    'Do not modify it using the code editor.
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        '
        'Form1
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
        Me.ClientSize = New System.Drawing.Size(292, 266)
        Me.Name = "Form1"
        Me.Text = "Form1"

    End Sub

#End Region

    Private Sub roundButton_Click(ByVal sender As System.Object, _
    ByVal e As System.EventArgs)
        MessageBox.Show("Hello ")
    End Sub


    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        Dim rb As New RoundButton()
        Me.Controls.Add(rb)
        AddHandler rb.Click, AddressOf roundButton_Click
    End Sub
End Class
Public Class RoundButton
    Inherits Button

    Protected Overrides Sub OnPaint(ByVal pevent As System.Windows.Forms.PaintEventArgs)
        Me.Size = New Size(50, 50)
        Dim aCircle As System.Drawing.Drawing2D.GraphicsPath = _
            New System.Drawing.Drawing2D.GraphicsPath()
        aCircle.AddEllipse(New System.Drawing.RectangleF(0, 0, 50, 50))
        Me.Region = New Region(aCircle)
    End Sub

End Class