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LEDClock - Windows Forms Composite Control

, 4 Jun 2002
This article explains how to build Popup editor and link it to an appropriate property in Properties Window
ledclock_demo.zip
bin
LEDClock.dll
TestLEDClock.exe
TestLEDClock.suo
TestLEDClock.vbproj.user
ledclock_src.zip
LEDClock.vbproj.user
LEDClock.suo
Imports System.Drawing.Design
Imports System.Windows.Forms.Design
Imports System.Text.RegularExpressions
Imports System.Globalization
Imports System.Threading
Imports System.ComponentModel
Imports System.ComponentModel.Design
Imports System.Windows.Forms.Control

Public Class LEDClock
    Inherits System.Windows.Forms.UserControl

    Private mTime As String
    Private otter As New ThreadStart(AddressOf MyThreadProc)
    Private oThread As New Thread(otter)
    Private flag As Boolean = False
    Private stoped As Boolean = False

#Region " Windows Form Designer generated code "

    Public Sub New()
        MyBase.New()

        InitializeComponent()
        MyInitializeComponent()

    End Sub

    Private Sub MyInitializeComponent()
        Dim dtfi As DateTimeFormatInfo
        dtfi = DateTimeFormatInfo.InvariantInfo
        Dim dt As DateTime = DateTime.Now
        Me.Time = dt.ToString("T", dtfi)
        oThread.Start()
    End Sub

    Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
        If disposing Then
            If Not (components Is Nothing) Then
                components.Dispose()
            End If
        End If
        flag = True
        oThread.Abort()
        MyBase.Dispose(disposing)
    End Sub

    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 LedControl1 As WinControls.LEDControl
    Friend WithEvents LedControl2 As WinControls.LEDControl
    Friend WithEvents LedControl3 As WinControls.LEDControl
    Friend WithEvents LedControl4 As WinControls.LEDControl
    Friend WithEvents LedControl5 As WinControls.LEDControl
    Friend WithEvents LedControl6 As WinControls.LEDControl
    Friend WithEvents LedControl7 As WinControls.LEDControl
    Friend WithEvents LedControl8 As WinControls.LEDControl
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.LedControl1 = New WinControls.LEDControl()
        Me.LedControl2 = New WinControls.LEDControl()
        Me.LedControl3 = New WinControls.LEDControl()
        Me.LedControl4 = New WinControls.LEDControl()
        Me.LedControl5 = New WinControls.LEDControl()
        Me.LedControl6 = New WinControls.LEDControl()
        Me.LedControl7 = New WinControls.LEDControl()
        Me.LedControl8 = New WinControls.LEDControl()
        Me.SuspendLayout()
        '
        'LedControl1
        '
        Me.LedControl1.Dock = System.Windows.Forms.DockStyle.Left
        Me.LedControl1.ForeColor = System.Drawing.SystemColors.ControlText
        Me.LedControl1.Name = "LedControl1"
        Me.LedControl1.Number = 0
        Me.LedControl1.TabIndex = 0
        Me.LedControl1.TabStop = False
        Me.LedControl1.Text = "LedControl1"
        '
        'LedControl2
        '
        Me.LedControl2.Dock = System.Windows.Forms.DockStyle.Left
        Me.LedControl2.ForeColor = System.Drawing.SystemColors.ControlText
        Me.LedControl2.Location = New System.Drawing.Point(32, 0)
        Me.LedControl2.Name = "LedControl2"
        Me.LedControl2.Number = 0
        Me.LedControl2.TabIndex = 1
        Me.LedControl2.TabStop = False
        Me.LedControl2.Text = "LedControl2"
        '
        'LedControl3
        '
        Me.LedControl3.Dock = System.Windows.Forms.DockStyle.Left
        Me.LedControl3.ForeColor = System.Drawing.SystemColors.ControlText
        Me.LedControl3.Location = New System.Drawing.Point(64, 0)
        Me.LedControl3.Name = "LedControl3"
        Me.LedControl3.Number = 10
        Me.LedControl3.TabIndex = 2
        Me.LedControl3.TabStop = False
        Me.LedControl3.Text = "LedControl3"
        '
        'LedControl4
        '
        Me.LedControl4.Dock = System.Windows.Forms.DockStyle.Left
        Me.LedControl4.ForeColor = System.Drawing.SystemColors.ControlText
        Me.LedControl4.Location = New System.Drawing.Point(96, 0)
        Me.LedControl4.Name = "LedControl4"
        Me.LedControl4.Number = 0
        Me.LedControl4.TabIndex = 3
        Me.LedControl4.TabStop = False
        Me.LedControl4.Text = "LedControl4"
        '
        'LedControl5
        '
        Me.LedControl5.Dock = System.Windows.Forms.DockStyle.Left
        Me.LedControl5.ForeColor = System.Drawing.SystemColors.ControlText
        Me.LedControl5.Location = New System.Drawing.Point(128, 0)
        Me.LedControl5.Name = "LedControl5"
        Me.LedControl5.Number = 0
        Me.LedControl5.TabIndex = 4
        Me.LedControl5.TabStop = False
        Me.LedControl5.Text = "LedControl5"
        '
        'LedControl6
        '
        Me.LedControl6.Dock = System.Windows.Forms.DockStyle.Left
        Me.LedControl6.ForeColor = System.Drawing.SystemColors.ControlText
        Me.LedControl6.Location = New System.Drawing.Point(160, 0)
        Me.LedControl6.Name = "LedControl6"
        Me.LedControl6.Number = 10
        Me.LedControl6.TabIndex = 5
        Me.LedControl6.TabStop = False
        Me.LedControl6.Text = "LedControl6"
        '
        'LedControl7
        '
        Me.LedControl7.Dock = System.Windows.Forms.DockStyle.Left
        Me.LedControl7.ForeColor = System.Drawing.SystemColors.ControlText
        Me.LedControl7.Location = New System.Drawing.Point(192, 0)
        Me.LedControl7.Name = "LedControl7"
        Me.LedControl7.Number = 0
        Me.LedControl7.TabIndex = 6
        Me.LedControl7.TabStop = False
        Me.LedControl7.Text = "LedControl7"
        '
        'LedControl8
        '
        Me.LedControl8.Dock = System.Windows.Forms.DockStyle.Left
        Me.LedControl8.ForeColor = System.Drawing.SystemColors.ControlText
        Me.LedControl8.Location = New System.Drawing.Point(224, 0)
        Me.LedControl8.Name = "LedControl8"
        Me.LedControl8.Number = 0
        Me.LedControl8.TabIndex = 7
        Me.LedControl8.TabStop = False
        Me.LedControl8.Text = "LedControl8"
        '
        'LEDClock
        '
        Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.LedControl8, Me.LedControl7, Me.LedControl6, Me.LedControl5, Me.LedControl4, Me.LedControl3, Me.LedControl2, Me.LedControl1})
        Me.Name = "LEDClock"
        Me.Size = New System.Drawing.Size(256, 32)
        Me.ResumeLayout(False)

    End Sub

#End Region

    <Editor(GetType(LEDTypeEditor), GetType(UITypeEditor))> _
    Public Property Time() As String
        Get
            Return mTime
        End Get
        Set(ByVal Value As String)
            If IsValid(Value) = True Then
                mTime = Value
                Me.LedControl1.Number = CInt(mTime.Substring(0, 1))
                Me.LedControl2.Number = CInt(mTime.Substring(1, 1))
                Me.LedControl4.Number = CInt(mTime.Substring(3, 1))
                Me.LedControl5.Number = CInt(mTime.Substring(4, 1))
                Me.LedControl7.Number = CInt(mTime.Substring(6, 1))
                Me.LedControl8.Number = CInt(mTime.Substring(7, 1))
                Me.Invalidate()
            End If
        End Set
    End Property

    Private Function IsValid(ByVal s As String) As Boolean
        If s.Length <> 8 Then Return False
        If s.Substring(2, 1) <> ":" Or s.Substring(5, 1) <> ":" Then Return False
        Dim ss As String
        ss = s.Substring(0, 2)
        If IsNumeric(ss) = False Then Return False
        If CInt(ss) > 23 Then Return False
        ss = s.Substring(3, 2)
        If IsNumeric(ss) = False Then Return False
        If CInt(ss) > 59 Then Return False
        ss = s.Substring(6, 2)
        If IsNumeric(ss) = False Then Return False
        If CInt(ss) > 59 Then Return False
        Return True
    End Function

    Public Sub [Stop]()
        stoped = True
    End Sub

    Public Sub Start()
        stoped = False
    End Sub

    Public Sub Reset()
        Me.Time = "00:00:00"
    End Sub

    Sub MyThreadProc()
        If Me.DesignMode = False Then
            Do While flag = False
                If stoped = False Then
                    Me.LedControl8.Inrease()
                    If Me.LedControl8.Number = 0 Then
                        If Me.LedControl7.Number < 5 Then
                            Me.LedControl7.Inrease()
                        Else
                            Me.LedControl7.Number = 0
                            Me.LedControl5.Inrease()
                            If Me.LedControl5.Number = 0 Then
                                If Me.LedControl4.Number < 5 Then
                                    Me.LedControl4.Inrease()
                                Else
                                    Me.LedControl4.Number = 0
                                    Me.LedControl2.Inrease()
                                    If Me.LedControl2.Number = 0 Then
                                        If Me.LedControl1.Number < 2 Then
                                            Me.LedControl1.Inrease()
                                        Else
                                            Me.LedControl1.Number = 0
                                        End If
                                    End If
                                    If Me.LedControl2.Number = 4 And Me.LedControl1.Number = 2 Then
                                        Me.LedControl2.Number = 0
                                        Me.LedControl1.Number = 0
                                    End If
                                End If
                            End If
                        End If
                    End If
                    oThread.Sleep(1000)
                End If
            Loop
        End If
    End Sub

    Protected Overrides Sub OnResize(ByVal e As System.EventArgs)
        MyBase.OnResize(e)

        Me.LedControl1.Height = Me.Height
        Me.LedControl2.Height = Me.Height
        Me.LedControl3.Height = Me.Height
        Me.LedControl4.Height = Me.Height
        Me.LedControl5.Height = Me.Height
        Me.LedControl6.Height = Me.Height
        Me.LedControl7.Height = Me.Height
        Me.LedControl8.Height = Me.Height
        Me.LedControl1.Width = Me.LedControl1.Height
        Me.LedControl2.Width = Me.LedControl2.Height
        Me.LedControl3.Width = Me.LedControl3.Height
        Me.LedControl4.Width = Me.LedControl4.Height
        Me.LedControl5.Width = Me.LedControl5.Height
        Me.LedControl6.Width = Me.LedControl6.Height
        Me.LedControl7.Width = Me.LedControl7.Height
        Me.LedControl8.Width = Me.LedControl8.Height
        Me.Width = 8 * Me.Height
    End Sub

    Protected Overrides Sub OnForeColorChanged(ByVal e As System.EventArgs)
        Dim c As Control
        For Each c In Me.Controls
            c.ForeColor = Me.ForeColor
        Next
    End Sub

End Class

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About the Author

Andelko Pavelic

Australia Australia
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Web01 | 2.8.140916.1 | Last Updated 5 Jun 2002
Article Copyright 2002 by Andelko Pavelic
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