form1.vb

Visual.Basic.NET实用编程百例-47.6M.zip

Public Class Form1
    Inherits System.Windows.Forms.Form

#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

    '窗体重写处置以清理组件列表。
    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 CheckBox1 As System.Windows.Forms.CheckBox
    Friend WithEvents ContextMenu1 As System.Windows.Forms.ContextMenu
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Me.ContextMenu1 = New System.Windows.Forms.ContextMenu
        Me.CheckBox1 = New System.Windows.Forms.CheckBox
        Me.SuspendLayout()
        '
        'ContextMenu1
        '
        '
        'CheckBox1
        '
        Me.CheckBox1.ContextMenu = Me.ContextMenu1
        Me.CheckBox1.Location = New System.Drawing.Point(32, 72)
        Me.CheckBox1.Name = "CheckBox1"
        Me.CheckBox1.Size = New System.Drawing.Size(216, 48)
        Me.CheckBox1.TabIndex = 4
        Me.CheckBox1.Text = "单击鼠标右键即可弹出快捷菜单"
        Me.CheckBox1.ThreeState = True
        '
        'Form1
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
        Me.ClientSize = New System.Drawing.Size(264, 245)
        Me.Controls.Add(Me.CheckBox1)
        Me.Name = "Form1"
        Me.Text = "动态快捷菜单"
        Me.ResumeLayout(False)

    End Sub

#End Region

    Private Sub ContextMenu1_Popup(ByVal sender As System.Object, _
    ByVal e As System.EventArgs) Handles ContextMenu1.Popup
        ContextMenu1.MenuItems.Clear()
        ' 清除菜单项.
        ContextMenu1.MenuItems.Add("选中", _
        New System.EventHandler(AddressOf Me.Checked_OnClick))
        ' 添加菜单项“选中”
        ContextMenu1.MenuItems.Add("不选中", _
        New System.EventHandler(AddressOf Me.Unchecked_OnClick))
        ' 添加菜单项“不选中”
    End Sub
    '以上代码为添加菜单项

    Protected Sub Checked_OnClick(ByVal sender As System.Object, _
    ByVal e As System.EventArgs)
        If ContextMenu1.SourceControl Is CheckBox1 Then
            CheckBox1.CheckState = CheckState.Checked
        End If
    End Sub

    Protected Sub Unchecked_OnClick(ByVal sender As System.Object, _
    ByVal e As System.EventArgs)
        If ContextMenu1.SourceControl Is CheckBox1 Then
            CheckBox1.CheckState = CheckState.Unchecked
        End If
    End Sub

    '以上为菜单项的事件处理程序
    '设置CheckBox 控件的CheckState属性

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

    End Sub
End Class