Owner Draw ListBox
Imports System
Imports System.Drawing
Imports System.Windows.Forms
Public Class MainClass
Public Shared Sub Main()
Application.Run(New OwnerDrawnVariableListBox())
End Sub
End Class
Public Class OwnerDrawnVariableListBox
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.IContainer
'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.
Friend WithEvents listBox2 As System.Windows.Forms.ListBox
<System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
Me.listBox2 = New System.Windows.Forms.ListBox()
Me.SuspendLayout()
'
'listBox2
'
Me.listBox2.DrawMode = System.Windows.Forms.DrawMode.OwnerDrawVariable
Me.listBox2.Items.AddRange(New Object() {"A", "a", "B"})
Me.listBox2.Location = New System.Drawing.Point(6, 15)
Me.listBox2.Name = "listBox2"
Me.listBox2.Size = New System.Drawing.Size(280, 192)
Me.listBox2.TabIndex = 5
'
'OwnerDrawnVariableListBox
'
Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
Me.ClientSize = New System.Drawing.Size(292, 222)
Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.listBox2})
Me.Name = "OwnerDrawnVariableListBox"
Me.Text = "OwnerDrawnVariableListBox"
Me.ResumeLayout(False)
End Sub
#End Region
Private Sub listBox2_DrawItem(ByVal sender As Object, ByVal e As System.Windows.Forms.DrawItemEventArgs) Handles listBox2.DrawItem
e.DrawBackground()
Dim textFont As Font
textFont = New Font(e.Font.FontFamily, e.Font.Size * 2)
e.Graphics.DrawString(listBox2.Items(e.Index).ToString(), _
textFont, _
New SolidBrush(e.ForeColor), _
e.Bounds.X, e.Bounds.Y)
e.DrawFocusRectangle()
End Sub
Private Sub listBox2_MeasureItem(ByVal sender As Object, ByVal e As System.Windows.Forms.MeasureItemEventArgs) Handles listBox2.MeasureItem
If e.Index Mod 2 = 0 Then e.ItemHeight *= 2
End Sub
End Class
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