Mega Code Archive
ComboBox Cell renderer
<![CDATA[
Imports System.Windows.Forms
Imports System.Drawing
Imports System.Drawing.Drawing2D
<Global.Microsoft.VisualBasic.CompilerServices.DesignerGenerated()> _
Partial Class Form1
Inherits System.Windows.Forms.Form
'Form overrides dispose to clean up the component list.
<System.Diagnostics.DebuggerNonUserCode()> _
Protected Overrides Sub Dispose(ByVal disposing As Boolean)
If disposing AndAlso components IsNot Nothing Then
components.Dispose()
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.
<System.Diagnostics.DebuggerStepThrough()> _
Private Sub InitializeComponent()
Me.XButton = New System.Windows.Forms.Button
Me.ColorList = New System.Windows.Forms.ComboBox
Me.SuspendLayout()
'
'XButton
'
Me.XButton.Location = New System.Drawing.Point(112, 24)
Me.XButton.Name = "XButton"
Me.XButton.Size = New System.Drawing.Size(75, 23)
Me.XButton.TabIndex = 0
Me.XButton.Text = "Button1"
Me.XButton.UseVisualStyleBackColor = True
'
'ColorList
'
Me.ColorList.DrawMode = System.Windows.Forms.DrawMode.OwnerDrawFixed
Me.ColorList.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList
Me.ColorList.FormattingEnabled = True
Me.ColorList.Location = New System.Drawing.Point(88, 64)
Me.ColorList.Name = "ColorList"
Me.ColorList.Size = New System.Drawing.Size(121, 21)
Me.ColorList.TabIndex = 1
'
'Form1
'
Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)
Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
Me.ClientSize = New System.Drawing.Size(292, 221)
Me.Controls.Add(Me.ColorList)
Me.Controls.Add(Me.XButton)
Me.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle
Me.MaximizeBox = False
Me.Name = "Form1"
Me.Text = "Control Drawing"
Me.ResumeLayout(False)
End Sub
Friend WithEvents XButton As System.Windows.Forms.Button
Friend WithEvents ColorList As System.Windows.Forms.ComboBox
End Class
Public Class Form1
Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
ColorList.Items.Add("Red")
ColorList.Items.Add("Orange")
ColorList.Items.Add("Yellow")
ColorList.Items.Add("Green")
ColorList.Items.Add("Blue")
ColorList.Items.Add("Indigo")
ColorList.Items.Add("Violet")
End Sub
Private Sub Form1_Paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles Me.Paint
e.Graphics.DrawEllipse(Pens.Black, 10, 10, Me.ClientRectangle.Width - 20, _
Me.ClientRectangle.Height - 20)
End Sub
Private Sub XButton_Paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles XButton.Paint
Dim usePen As Pen
e.Graphics.Clear(SystemColors.Control)
usePen = New Pen(SystemColors.ControlText, 3)
e.Graphics.DrawRectangle(usePen, XButton.ClientRectangle)
usePen.Dispose()
End Sub
Private Sub ColorList_DrawItem(ByVal sender As Object, ByVal e As System.Windows.Forms.DrawItemEventArgs) Handles ColorList.DrawItem
Dim useBrush As Brush
If (e.Index = -1) Then Return
e.DrawBackground()
useBrush = New SolidBrush(Color.FromName(CStr(ColorList.Items(e.Index))))
e.Graphics.FillRectangle(useBrush, _
e.Bounds.Left + 2, e.Bounds.Top + 2, _
e.Bounds.Width - 4, e.Bounds.Height - 4)
useBrush.Dispose()
e.Graphics.DrawRectangle(Pens.Black, _
e.Bounds.Left + 2, e.Bounds.Top + 2, _
e.Bounds.Width - 4, e.Bounds.Height - 4)
e.DrawFocusRectangle()
End Sub
Private Sub XButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles XButton.Click
MsgBox("Button clicked.")
End Sub
End Class
public class ComboBoxCellRenderer
public Shared Sub Main
Application.Run(New Form1)
End Sub
End class
]]>