Sub class Button class to create a Clock button : Control Subclass « GUI « VB.Net

1. VB.Net
2. GUI
3. Control Subclass

Sub class Button class to create a Clock button

Imports System
Imports System.Collections
Imports System.Data
Imports System.IO
Imports System.Xml.Serialization
Imports System.Xml
Imports System.Windows.Forms
Imports System.Data.SqlClient
Imports System.Data.OleDb

Public Class MainClass

    Shared Sub Main()
        Dim form1 As Form = New Form1
        Application.Run(form1)
    End Sub
End Class






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 TickButton1 As TickButton
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.TickButton1 = New TickButton()
        Me.SuspendLayout()
        '
        'TickButton1
        '
        Me.TickButton1.Location = New System.Drawing.Point(16, 120)
        Me.TickButton1.Name = "TickButton1"
        Me.TickButton1.Size = New System.Drawing.Size(216, 23)
        Me.TickButton1.TabIndex = 4
        Me.TickButton1.Text = "Design Mode"
        '
        'Form1
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
        Me.ClientSize = New System.Drawing.Size(240, 189)
        Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.TickButton1})
        Me.Name = "Form1"
        Me.ResumeLayout(False)

    End Sub

#End Region

End Class




Public Class TickButton
    Inherits System.Windows.Forms.Button


#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

    'UserControl 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 ticker As System.Windows.Forms.Timer
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.components = New System.ComponentModel.Container()
        Me.ticker = New System.Windows.Forms.Timer(Me.components)
        '
        'ticker
        '

    End Sub

#End Region

    Protected Overrides Sub InitLayout()

        ' are we in design mode?
        If DesignMode = True Then
            Text = "Design Mode"
        Else
            ticker.Enabled = True
        End If

    End Sub

    Private Sub ticker_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ticker.Tick
        ' update the text...
        Text = Now.ToString
    End Sub
End Class

           
       

Related examples in the same category

1.

Subclass Form