Imports System.Windows.Forms
Imports System.Drawing
Module Module1
Sub Main()
Application.Run(New Form1)
End Sub
End Module
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.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 Label1 As System.Windows.Forms.Label
Friend WithEvents TrackBar1 As System.Windows.Forms.TrackBar
Friend WithEvents TrackBar2 As System.Windows.Forms.TrackBar
Friend WithEvents TrackBar3 As System.Windows.Forms.TrackBar
Friend WithEvents Label2 As System.Windows.Forms.Label
Friend WithEvents Label3 As System.Windows.Forms.Label
<System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
Me.Label1 = New System.Windows.Forms.Label()
Me.TrackBar1 = New System.Windows.Forms.TrackBar()
Me.TrackBar2 = New System.Windows.Forms.TrackBar()
Me.TrackBar3 = New System.Windows.Forms.TrackBar()
Me.Label2 = New System.Windows.Forms.Label()
Me.Label3 = New System.Windows.Forms.Label()
CType(Me.TrackBar1, System.ComponentModel.ISupportInitialize).BeginInit()
CType(Me.TrackBar2, System.ComponentModel.ISupportInitialize).BeginInit()
CType(Me.TrackBar3, System.ComponentModel.ISupportInitialize).BeginInit()
Me.SuspendLayout()
'
'Label1
'
Me.Label1.Location = New System.Drawing.Point(20, 30)
Me.Label1.Name = "Label1"
Me.Label1.Size = New System.Drawing.Size(56, 23)
Me.Label1.TabIndex = 0
Me.Label1.Text = "Red"
'
'TrackBar1
'
Me.TrackBar1.Location = New System.Drawing.Point(80, 30)
Me.TrackBar1.Maximum = 255
Me.TrackBar1.Name = "TrackBar1"
Me.TrackBar1.Size = New System.Drawing.Size(180, 34)
Me.TrackBar1.TabIndex = 2
Me.TrackBar1.TickFrequency = 25
'
'TrackBar2
'
Me.TrackBar2.Location = New System.Drawing.Point(80, 80)
Me.TrackBar2.Maximum = 255
Me.TrackBar2.Name = "TrackBar2"
Me.TrackBar2.Size = New System.Drawing.Size(180, 34)
Me.TrackBar2.TabIndex = 5
Me.TrackBar2.TickFrequency = 25
'
'TrackBar3
'
Me.TrackBar3.Location = New System.Drawing.Point(80, 130)
Me.TrackBar3.Maximum = 255
Me.TrackBar3.Name = "TrackBar3"
Me.TrackBar3.Size = New System.Drawing.Size(180, 34)
Me.TrackBar3.TabIndex = 3
Me.TrackBar3.TickFrequency = 25
'
'Label2
'
Me.Label2.Location = New System.Drawing.Point(20, 80)
Me.Label2.Name = "Label2"
Me.Label2.Size = New System.Drawing.Size(48, 23)
Me.Label2.TabIndex = 4
Me.Label2.Text = "Green"
'
'Label3
'
Me.Label3.Location = New System.Drawing.Point(20, 130)
Me.Label3.Name = "Label3"
Me.Label3.Size = New System.Drawing.Size(56, 23)
Me.Label3.TabIndex = 5
Me.Label3.Text = "Blue"
'
'Form1
'
Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
Me.ClientSize = New System.Drawing.Size(292, 273)
Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.Label3, Me.Label2, Me.TrackBar3, Me.TrackBar2, Me.TrackBar1, Me.Label1})
Me.Name = "Form1"
Me.Text = "TrackBarDemo"
CType(Me.TrackBar1, System.ComponentModel.ISupportInitialize).EndInit()
CType(Me.TrackBar2, System.ComponentModel.ISupportInitialize).EndInit()
CType(Me.TrackBar3, System.ComponentModel.ISupportInitialize).EndInit()
Me.ResumeLayout(False)
End Sub
#End Region
Public Red As Byte
Public Green As Byte
Public Blue As Byte
Public Background As Color
Private Sub TrackBar1_ValueChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles TrackBar1.ValueChanged
Red = TrackBar1.Value
Background = Color.FromArgb(Red, Green, Blue)
RefreshBackground()
End Sub
Private Sub TrackBar2_ValueChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles TrackBar2.ValueChanged
Green = TrackBar2.Value
Background = Color.FromArgb(Red, Green, Blue)
RefreshBackground()
End Sub
Private Sub TrackBar3_ValueChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles TrackBar3.ValueChanged
Blue = TrackBar3.Value
Background = Color.FromArgb(Red, Green, Blue)
RefreshBackground()
End Sub
Private Sub Form1_Activated(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Activated
Red = Form1.ActiveForm.BackColor.R
Green = Form1.ActiveForm.BackColor.G
Blue = Form1.ActiveForm.BackColor.B
TrackBar1.Value = Red
TrackBar2.Value = Green
TrackBar3.Value = Blue
End Sub
Private Sub RefreshBackground()
Form1.ActiveForm.BackColor = Background
Form1.ActiveForm.Refresh()
End Sub
End Class
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