form1.vb

Visual.Basic.NET实用编程百例-47.6M.zip

Public Class Form1
    Inherits System.Windows.Forms.Form
    Dim uptodown As Boolean

#Region " Windows 窗体设计器生成的代码 "

    Public Sub New()
        MyBase.New()

        '该调用是 Windows 窗体设计器所必需的。
        InitializeComponent()

        '在 InitializeComponent() 调用之后添加任何初始化

    End Sub

    '窗体重写 dispose 以清理组件列表。
    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

    'Windows 窗体设计器所必需的
    Private components As System.ComponentModel.IContainer

    '注意: 以下过程是 Windows 窗体设计器所必需的
    '可以使用 Windows 窗体设计器修改此过程。
    '不要使用代码编辑器修改它。
    Friend WithEvents Button1 As System.Windows.Forms.Button
    Friend WithEvents Button2 As System.Windows.Forms.Button
    Friend WithEvents Button3 As System.Windows.Forms.Button
    Friend WithEvents Button4 As System.Windows.Forms.Button
    Friend WithEvents Timer1 As System.Timers.Timer
    Friend WithEvents Label1 As System.Windows.Forms.Label
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.Button1 = New System.Windows.Forms.Button
        Me.Button2 = New System.Windows.Forms.Button
        Me.Button3 = New System.Windows.Forms.Button
        Me.Button4 = New System.Windows.Forms.Button
        Me.Timer1 = New System.Timers.Timer
        Me.Label1 = New System.Windows.Forms.Label
        CType(Me.Timer1, System.ComponentModel.ISupportInitialize).BeginInit()
        Me.SuspendLayout()
        '
        'Button1
        '
        Me.Button1.Location = New System.Drawing.Point(0, 0)
        Me.Button1.Name = "Button1"
        Me.Button1.TabIndex = 0
        Me.Button1.Text = "向上滚"
        '
        'Button2
        '
        Me.Button2.Location = New System.Drawing.Point(232, 0)
        Me.Button2.Name = "Button2"
        Me.Button2.TabIndex = 1
        Me.Button2.Text = "向下滚"
        '
        'Button3
        '
        Me.Button3.Location = New System.Drawing.Point(0, 248)
        Me.Button3.Name = "Button3"
        Me.Button3.TabIndex = 2
        Me.Button3.Text = "开始/停止"
        '
        'Button4
        '
        Me.Button4.Location = New System.Drawing.Point(232, 248)
        Me.Button4.Name = "Button4"
        Me.Button4.TabIndex = 3
        Me.Button4.Text = "退出"
        '
        'Timer1
        '
        Me.Timer1.Interval = 10
        Me.Timer1.SynchronizingObject = Me
        '
        'Label1
        '
        Me.Label1.Font = New System.Drawing.Font("隶书", 24.0!, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, CType(134, Byte))
        Me.Label1.ForeColor = System.Drawing.Color.Red
        Me.Label1.Location = New System.Drawing.Point(80, 40)
        Me.Label1.Name = "Label1"
        Me.Label1.Size = New System.Drawing.Size(144, 32)
        Me.Label1.TabIndex = 4
        Me.Label1.Text = "滚屏效果"
        '
        'Form1
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
        Me.ClientSize = New System.Drawing.Size(312, 273)
        Me.Controls.Add(Me.Label1)
        Me.Controls.Add(Me.Button4)
        Me.Controls.Add(Me.Button3)
        Me.Controls.Add(Me.Button2)
        Me.Controls.Add(Me.Button1)
        Me.Name = "Form1"
        Me.Text = "滚屏效果"
        CType(Me.Timer1, System.ComponentModel.ISupportInitialize).EndInit()
        Me.ResumeLayout(False)

    End Sub

#End Region

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        uptodown = False
    End Sub

    Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
        If Timer1.Enabled = False Then
            Timer1.Enabled = True
        Else
            Timer1.Enabled = False
        End If
    End Sub

    Private Sub Button2_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button2.Click
        uptodown = True
    End Sub


    Private Sub Button4_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click
        Me.Close()
    End Sub

    Private Sub Timer1_timer(ByVal sender As System.Object, ByVal e As System.Timers.ElapsedEventArgs) Handles Timer1.Elapsed
        If uptodown Then
            If Label1.Top = Me.Height Then
                Label1.Top = 0 - Label1.Height
            End If
            Label1.Top = Label1.Top + 1
        Else
            If Label1.Top = 0 - Label1.Height Then
                Label1.Top = Me.Height
            End If
            Label1.Top = Label1.Top - 1
        End If
    End Sub

    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

    End Sub
End Class