form1.vb

Mastering VBNet Include Source Code

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.
    Public Overrides Sub Dispose()
        MyBase.Dispose()
        If Not (components Is Nothing) Then
            components.Dispose()
        End If
    End Sub
    Private WithEvents PictureBox1 As System.Windows.Forms.PictureBox
    Private WithEvents Button1 As System.Windows.Forms.Button

    '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()
        Me.PictureBox1 = New System.Windows.Forms.PictureBox()
        Me.Button1 = New System.Windows.Forms.Button()
        Me.SuspendLayout()
        '
        'PictureBox1
        '
        Me.PictureBox1.Location = New System.Drawing.Point(8, 8)
        Me.PictureBox1.Name = "PictureBox1"
        Me.PictureBox1.Size = New System.Drawing.Size(472, 224)
        Me.PictureBox1.TabIndex = 0
        Me.PictureBox1.TabStop = False
        '
        'Button1
        '
        Me.Button1.Font = New System.Drawing.Font("Microsoft Sans Serif", 11.25!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte))
        Me.Button1.Location = New System.Drawing.Point(336, 240)
        Me.Button1.Name = "Button1"
        Me.Button1.Size = New System.Drawing.Size(144, 32)
        Me.Button1.TabIndex = 1
        Me.Button1.Text = "Color Box"
        '
        'Form1
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
        Me.ClientSize = New System.Drawing.Size(488, 285)
        Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.Button1, Me.PictureBox1})
        Me.Name = "Form1"
        Me.Text = "Recursion by Mistake"
        Me.ResumeLayout(False)

    End Sub

#End Region

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Static bmp As New Bitmap(PictureBox1.ClientSize.Width, PictureBox1.ClientSize.Height)
        Dim clr As Color
        Dim rnd As New System.Random()
        Dim G As Graphics
        PictureBox1.Image = bmp
        G = Graphics.FromImage(bmp)
        clr = Color.FromArgb(rnd.Next(0, 255), rnd.Next(0, 255), rnd.Next(0, 255))
        Dim X As Integer
        For X = 0 To PictureBox1.Width - 1
            G.DrawLine(New Pen(clr), X, 0, X, PictureBox1.Height)
            PictureBox1.Invalidate()
            Application.DoEvents()
        Next
    End Sub
End Class