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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.ComponentModel
Imports System.ComponentModel.Design
Imports System.Windows.Forms.Control

Public Class LEDControl
    Inherits System.Windows.Forms.Control

    Private mNumber As Integer = 0

#Region " Component Designer generated code "

    Public Sub New()
        MyBase.New()

        InitializeComponent()

        setstyle(ControlStyles.ResizeRedraw, True)

    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
        MyBase.Dispose(disposing)
    End Sub

    Private components As System.ComponentModel.IContainer

    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()

    End Sub

#End Region

    Public Property Number() As Integer
        Get
            Return mNumber
        End Get
        Set(ByVal Value As Integer)
            If Value >= 0 And Value < 11 Then
                Dim old As Integer = mNumber
                mNumber = Value
                Me.Invalidate()
            End If
        End Set
    End Property

    Public Sub Inrease()
        If Me.Number <> 9 Then
            Me.Number += 1
        Else
            Me.Number = 0
        End If
    End Sub

    Protected Overrides Sub OnPaint(ByVal pe As System.Windows.Forms.PaintEventArgs)
        MyBase.OnPaint(pe)

        Dim g As Graphics = pe.Graphics
        DrawNumber(g, mNumber)

    End Sub

    Private Sub DrawNumber(ByVal g As Graphics, ByVal num As Integer)
        Dim p As New Pen(Me.ForeColor)
        Select Case num
            Case 0

                'TOP
                g.DrawLine(p, 5, 2, Me.Width - 5, 2)
                g.DrawLine(p, 4, 3, Me.Width - 4, 3)
                g.DrawLine(p, 5, 4, Me.Width - 5, 4)

                'BOTTOM
                g.DrawLine(p, 5, Me.Height - 4, Me.Width - 5, Me.Height - 4)
                g.DrawLine(p, 4, Me.Height - 3, Me.Width - 4, Me.Height - 3)
                g.DrawLine(p, 5, Me.Height - 2, Me.Width - 5, Me.Height - 2)

                'TOP LEFT
                g.DrawLine(p, 2, 5, 2, Me.Height \ 2 - 2)
                g.DrawLine(p, 3, 4, 3, Me.Height \ 2 - 1)
                g.DrawLine(p, 4, 5, 4, Me.Height \ 2 - 2)

                'TOP RIGHT
                g.DrawLine(p, Me.Width - 4, 5, Me.Width - 4, Me.Height \ 2 - 2)
                g.DrawLine(p, Me.Width - 3, 4, Me.Width - 3, Me.Height \ 2 - 1)
                g.DrawLine(p, Me.Width - 2, 5, Me.Width - 2, Me.Height \ 2 - 2)

                'BOTTOM RIGHT
                g.DrawLine(p, Me.Width - 2, Me.Height \ 2 + 2, Me.Width - 2, Me.Height - 5)
                g.DrawLine(p, Me.Width - 3, Me.Height \ 2 + 1, Me.Width - 3, Me.Height - 4)
                g.DrawLine(p, Me.Width - 4, Me.Height \ 2 + 2, Me.Width - 4, Me.Height - 5)

                'BOTTOM LEFT
                g.DrawLine(p, 2, Me.Height \ 2 + 2, 2, Me.Height - 5)
                g.DrawLine(p, 3, Me.Height \ 2 + 1, 3, Me.Height - 4)
                g.DrawLine(p, 4, Me.Height \ 2 + 2, 4, Me.Height - 5)

            Case 1

                'TOP RIGHT
                g.DrawLine(p, Me.Width - 4, 5, Me.Width - 4, Me.Height \ 2 - 2)
                g.DrawLine(p, Me.Width - 3, 4, Me.Width - 3, Me.Height \ 2 - 1)
                g.DrawLine(p, Me.Width - 2, 5, Me.Width - 2, Me.Height \ 2 - 2)

                'BOTTOM RIGHT
                g.DrawLine(p, Me.Width - 2, Me.Height \ 2 + 2, Me.Width - 2, Me.Height - 5)
                g.DrawLine(p, Me.Width - 3, Me.Height \ 2 + 1, Me.Width - 3, Me.Height - 4)
                g.DrawLine(p, Me.Width - 4, Me.Height \ 2 + 2, Me.Width - 4, Me.Height - 5)

            Case 2

                'TOP
                g.DrawLine(p, 5, 2, Me.Width - 5, 2)
                g.DrawLine(p, 4, 3, Me.Width - 4, 3)
                g.DrawLine(p, 5, 4, Me.Width - 5, 4)

                'MIDDLE
                g.DrawLine(p, 5, Me.Height \ 2 - 1, Me.Width - 5, Me.Height \ 2 - 1)
                g.DrawLine(p, 4, Me.Height \ 2, Me.Width - 4, Me.Height \ 2)
                g.DrawLine(p, 5, Me.Height \ 2 + 1, Me.Width - 5, Me.Height \ 2 + 1)

                'BOTTOM
                g.DrawLine(p, 5, Me.Height - 4, Me.Width - 5, Me.Height - 4)
                g.DrawLine(p, 4, Me.Height - 3, Me.Width - 4, Me.Height - 3)
                g.DrawLine(p, 5, Me.Height - 2, Me.Width - 5, Me.Height - 2)

                'TOP RIGHT
                g.DrawLine(p, Me.Width - 4, 5, Me.Width - 4, Me.Height \ 2 - 2)
                g.DrawLine(p, Me.Width - 3, 4, Me.Width - 3, Me.Height \ 2 - 1)
                g.DrawLine(p, Me.Width - 2, 5, Me.Width - 2, Me.Height \ 2 - 2)

                'BOTTOM LEFT
                g.DrawLine(p, 2, Me.Height \ 2 + 2, 2, Me.Height - 5)
                g.DrawLine(p, 3, Me.Height \ 2 + 1, 3, Me.Height - 4)
                g.DrawLine(p, 4, Me.Height \ 2 + 2, 4, Me.Height - 5)

            Case 3

                'TOP
                g.DrawLine(p, 5, 2, Me.Width - 5, 2)
                g.DrawLine(p, 4, 3, Me.Width - 4, 3)
                g.DrawLine(p, 5, 4, Me.Width - 5, 4)

                'MIDDLE
                g.DrawLine(p, 5, Me.Height \ 2 - 1, Me.Width - 5, Me.Height \ 2 - 1)
                g.DrawLine(p, 4, Me.Height \ 2, Me.Width - 4, Me.Height \ 2)
                g.DrawLine(p, 5, Me.Height \ 2 + 1, Me.Width - 5, Me.Height \ 2 + 1)

                'BOTTOM
                g.DrawLine(p, 5, Me.Height - 4, Me.Width - 5, Me.Height - 4)
                g.DrawLine(p, 4, Me.Height - 3, Me.Width - 4, Me.Height - 3)
                g.DrawLine(p, 5, Me.Height - 2, Me.Width - 5, Me.Height - 2)

                'TOP RIGHT
                g.DrawLine(p, Me.Width - 4, 5, Me.Width - 4, Me.Height \ 2 - 2)
                g.DrawLine(p, Me.Width - 3, 4, Me.Width - 3, Me.Height \ 2 - 1)
                g.DrawLine(p, Me.Width - 2, 5, Me.Width - 2, Me.Height \ 2 - 2)

                'BOTTOM RIGHT
                g.DrawLine(p, Me.Width - 2, Me.Height \ 2 + 2, Me.Width - 2, Me.Height - 5)
                g.DrawLine(p, Me.Width - 3, Me.Height \ 2 + 1, Me.Width - 3, Me.Height - 4)
                g.DrawLine(p, Me.Width - 4, Me.Height \ 2 + 2, Me.Width - 4, Me.Height - 5)

            Case 4

                'MIDDLE
                g.DrawLine(p, 5, Me.Height \ 2 - 1, Me.Width - 5, Me.Height \ 2 - 1)
                g.DrawLine(p, 4, Me.Height \ 2, Me.Width - 4, Me.Height \ 2)
                g.DrawLine(p, 5, Me.Height \ 2 + 1, Me.Width - 5, Me.Height \ 2 + 1)

                'TOP LEFT
                g.DrawLine(p, 2, 5, 2, Me.Height \ 2 - 2)
                g.DrawLine(p, 3, 4, 3, Me.Height \ 2 - 1)
                g.DrawLine(p, 4, 5, 4, Me.Height \ 2 - 2)

                'TOP RIGHT
                g.DrawLine(p, Me.Width - 4, 5, Me.Width - 4, Me.Height \ 2 - 2)
                g.DrawLine(p, Me.Width - 3, 4, Me.Width - 3, Me.Height \ 2 - 1)
                g.DrawLine(p, Me.Width - 2, 5, Me.Width - 2, Me.Height \ 2 - 2)

                'BOTTOM RIGHT
                g.DrawLine(p, Me.Width - 2, Me.Height \ 2 + 2, Me.Width - 2, Me.Height - 5)
                g.DrawLine(p, Me.Width - 3, Me.Height \ 2 + 1, Me.Width - 3, Me.Height - 4)
                g.DrawLine(p, Me.Width - 4, Me.Height \ 2 + 2, Me.Width - 4, Me.Height - 5)

            Case 5

                'TOP
                g.DrawLine(p, 5, 2, Me.Width - 5, 2)
                g.DrawLine(p, 4, 3, Me.Width - 4, 3)
                g.DrawLine(p, 5, 4, Me.Width - 5, 4)

                'MIDDLE
                g.DrawLine(p, 5, Me.Height \ 2 - 1, Me.Width - 5, Me.Height \ 2 - 1)
                g.DrawLine(p, 4, Me.Height \ 2, Me.Width - 4, Me.Height \ 2)
                g.DrawLine(p, 5, Me.Height \ 2 + 1, Me.Width - 5, Me.Height \ 2 + 1)

                'BOTTOM
                g.DrawLine(p, 5, Me.Height - 4, Me.Width - 5, Me.Height - 4)
                g.DrawLine(p, 4, Me.Height - 3, Me.Width - 4, Me.Height - 3)
                g.DrawLine(p, 5, Me.Height - 2, Me.Width - 5, Me.Height - 2)

                'TOP LEFT
                g.DrawLine(p, 2, 5, 2, Me.Height \ 2 - 2)
                g.DrawLine(p, 3, 4, 3, Me.Height \ 2 - 1)
                g.DrawLine(p, 4, 5, 4, Me.Height \ 2 - 2)

                'BOTTOM RIGHT
                g.DrawLine(p, Me.Width - 2, Me.Height \ 2 + 2, Me.Width - 2, Me.Height - 5)
                g.DrawLine(p, Me.Width - 3, Me.Height \ 2 + 1, Me.Width - 3, Me.Height - 4)
                g.DrawLine(p, Me.Width - 4, Me.Height \ 2 + 2, Me.Width - 4, Me.Height - 5)

            Case 6

                'TOP
                g.DrawLine(p, 5, 2, Me.Width - 5, 2)
                g.DrawLine(p, 4, 3, Me.Width - 4, 3)
                g.DrawLine(p, 5, 4, Me.Width - 5, 4)

                'MIDDLE
                g.DrawLine(p, 5, Me.Height \ 2 - 1, Me.Width - 5, Me.Height \ 2 - 1)
                g.DrawLine(p, 4, Me.Height \ 2, Me.Width - 4, Me.Height \ 2)
                g.DrawLine(p, 5, Me.Height \ 2 + 1, Me.Width - 5, Me.Height \ 2 + 1)

                'BOTTOM
                g.DrawLine(p, 5, Me.Height - 4, Me.Width - 5, Me.Height - 4)
                g.DrawLine(p, 4, Me.Height - 3, Me.Width - 4, Me.Height - 3)
                g.DrawLine(p, 5, Me.Height - 2, Me.Width - 5, Me.Height - 2)

                'TOP LEFT
                g.DrawLine(p, 2, 5, 2, Me.Height \ 2 - 2)
                g.DrawLine(p, 3, 4, 3, Me.Height \ 2 - 1)
                g.DrawLine(p, 4, 5, 4, Me.Height \ 2 - 2)

                'BOTTOM RIGHT
                g.DrawLine(p, Me.Width - 2, Me.Height \ 2 + 2, Me.Width - 2, Me.Height - 5)
                g.DrawLine(p, Me.Width - 3, Me.Height \ 2 + 1, Me.Width - 3, Me.Height - 4)
                g.DrawLine(p, Me.Width - 4, Me.Height \ 2 + 2, Me.Width - 4, Me.Height - 5)

                'BOTTOM LEFT
                g.DrawLine(p, 2, Me.Height \ 2 + 2, 2, Me.Height - 5)
                g.DrawLine(p, 3, Me.Height \ 2 + 1, 3, Me.Height - 4)
                g.DrawLine(p, 4, Me.Height \ 2 + 2, 4, Me.Height - 5)

            Case 7

                'TOP
                g.DrawLine(p, 5, 2, Me.Width - 5, 2)
                g.DrawLine(p, 4, 3, Me.Width - 4, 3)
                g.DrawLine(p, 5, 4, Me.Width - 5, 4)

                'TOP RIGHT
                g.DrawLine(p, Me.Width - 4, 5, Me.Width - 4, Me.Height \ 2 - 2)
                g.DrawLine(p, Me.Width - 3, 4, Me.Width - 3, Me.Height \ 2 - 1)
                g.DrawLine(p, Me.Width - 2, 5, Me.Width - 2, Me.Height \ 2 - 2)

                'BOTTOM RIGHT
                g.DrawLine(p, Me.Width - 2, Me.Height \ 2 + 2, Me.Width - 2, Me.Height - 5)
                g.DrawLine(p, Me.Width - 3, Me.Height \ 2 + 1, Me.Width - 3, Me.Height - 4)
                g.DrawLine(p, Me.Width - 4, Me.Height \ 2 + 2, Me.Width - 4, Me.Height - 5)

            Case 8

                'TOP
                g.DrawLine(p, 5, 2, Me.Width - 5, 2)
                g.DrawLine(p, 4, 3, Me.Width - 4, 3)
                g.DrawLine(p, 5, 4, Me.Width - 5, 4)

                'MIDDLE
                g.DrawLine(p, 5, Me.Height \ 2 - 1, Me.Width - 5, Me.Height \ 2 - 1)
                g.DrawLine(p, 4, Me.Height \ 2, Me.Width - 4, Me.Height \ 2)
                g.DrawLine(p, 5, Me.Height \ 2 + 1, Me.Width - 5, Me.Height \ 2 + 1)

                'BOTTOM
                g.DrawLine(p, 5, Me.Height - 4, Me.Width - 5, Me.Height - 4)
                g.DrawLine(p, 4, Me.Height - 3, Me.Width - 4, Me.Height - 3)
                g.DrawLine(p, 5, Me.Height - 2, Me.Width - 5, Me.Height - 2)

                'TOP LEFT
                g.DrawLine(p, 2, 5, 2, Me.Height \ 2 - 2)
                g.DrawLine(p, 3, 4, 3, Me.Height \ 2 - 1)
                g.DrawLine(p, 4, 5, 4, Me.Height \ 2 - 2)

                'TOP RIGHT
                g.DrawLine(p, Me.Width - 4, 5, Me.Width - 4, Me.Height \ 2 - 2)
                g.DrawLine(p, Me.Width - 3, 4, Me.Width - 3, Me.Height \ 2 - 1)
                g.DrawLine(p, Me.Width - 2, 5, Me.Width - 2, Me.Height \ 2 - 2)

                'BOTTOM RIGHT
                g.DrawLine(p, Me.Width - 2, Me.Height \ 2 + 2, Me.Width - 2, Me.Height - 5)
                g.DrawLine(p, Me.Width - 3, Me.Height \ 2 + 1, Me.Width - 3, Me.Height - 4)
                g.DrawLine(p, Me.Width - 4, Me.Height \ 2 + 2, Me.Width - 4, Me.Height - 5)

                'BOTTOM LEFT
                g.DrawLine(p, 2, Me.Height \ 2 + 2, 2, Me.Height - 5)
                g.DrawLine(p, 3, Me.Height \ 2 + 1, 3, Me.Height - 4)
                g.DrawLine(p, 4, Me.Height \ 2 + 2, 4, Me.Height - 5)

            Case 9

                'TOP
                g.DrawLine(p, 5, 2, Me.Width - 5, 2)
                g.DrawLine(p, 4, 3, Me.Width - 4, 3)
                g.DrawLine(p, 5, 4, Me.Width - 5, 4)

                'MIDDLE
                g.DrawLine(p, 5, Me.Height \ 2 - 1, Me.Width - 5, Me.Height \ 2 - 1)
                g.DrawLine(p, 4, Me.Height \ 2, Me.Width - 4, Me.Height \ 2)
                g.DrawLine(p, 5, Me.Height \ 2 + 1, Me.Width - 5, Me.Height \ 2 + 1)

                'BOTTOM
                g.DrawLine(p, 5, Me.Height - 4, Me.Width - 5, Me.Height - 4)
                g.DrawLine(p, 4, Me.Height - 3, Me.Width - 4, Me.Height - 3)
                g.DrawLine(p, 5, Me.Height - 2, Me.Width - 5, Me.Height - 2)

                'TOP LEFT
                g.DrawLine(p, 2, 5, 2, Me.Height \ 2 - 2)
                g.DrawLine(p, 3, 4, 3, Me.Height \ 2 - 1)
                g.DrawLine(p, 4, 5, 4, Me.Height \ 2 - 2)

                'TOP RIGHT
                g.DrawLine(p, Me.Width - 4, 5, Me.Width - 4, Me.Height \ 2 - 2)
                g.DrawLine(p, Me.Width - 3, 4, Me.Width - 3, Me.Height \ 2 - 1)
                g.DrawLine(p, Me.Width - 2, 5, Me.Width - 2, Me.Height \ 2 - 2)

                'BOTTOM RIGHT
                g.DrawLine(p, Me.Width - 2, Me.Height \ 2 + 2, Me.Width - 2, Me.Height - 5)
                g.DrawLine(p, Me.Width - 3, Me.Height \ 2 + 1, Me.Width - 3, Me.Height - 4)
                g.DrawLine(p, Me.Width - 4, Me.Height \ 2 + 2, Me.Width - 4, Me.Height - 5)

            Case 10

                Dim p2 As New Pen(Me.ForeColor, 2)
                g.DrawRectangle(p2, Me.Width \ 2 - 1, Me.Height \ 4 - 2, 2, 2)
                g.DrawRectangle(p2, Me.Width \ 2 - 1, 3 * Me.Height \ 4 - 2, 2, 2)
                p2 = Nothing

        End Select

        p = Nothing

    End Sub

    Protected Overrides ReadOnly Property DefaultSize() As System.Drawing.Size
        Get
            Dim mSize As System.Drawing.Size = New System.Drawing.Size(32, 32)
            Return mSize
        End Get
    End Property

End Class

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Andelko Pavelic

Australia Australia
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