form.vb

Visual.Basic.NET实用编程百例-47.6M.zip

Public Class Formcircle
    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 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 PictureBox1 As System.Windows.Forms.PictureBox
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
        Dim resources As System.Resources.ResourceManager = New System.Resources.ResourceManager(GetType(Formcircle))
        Me.PictureBox1 = New System.Windows.Forms.PictureBox
        Me.SuspendLayout()
        '
        'PictureBox1
        '
        Me.PictureBox1.Image = CType(resources.GetObject("PictureBox1.Image"), System.Drawing.Image)
        Me.PictureBox1.Location = New System.Drawing.Point(80, 48)
        Me.PictureBox1.Name = "PictureBox1"
        Me.PictureBox1.Size = New System.Drawing.Size(128, 200)
        Me.PictureBox1.TabIndex = 0
        Me.PictureBox1.TabStop = False
        '
        'Formcircle
        '
        Me.AutoScaleBaseSize = New System.Drawing.Size(6, 14)
        Me.ClientSize = New System.Drawing.Size(292, 273)
        Me.Controls.Add(Me.PictureBox1)
        Me.Name = "Formcircle"
        Me.Text = "圆形窗体"
        Me.ResumeLayout(False)

    End Sub

#End Region
    Private Sub Formcircle_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

    End Sub

    Private Sub PictureBox1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles PictureBox1.Click
        Dim myhwnd, c As Integer
        myhwnd = GetActiveWindow()
        c = CreateEllipticRgn(100, 100, 200, 200)
        Call SetWindowRgn(myhwnd, c, True)
    End Sub
    Private Sub PictureBox1_DoubleClick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles PictureBox1.DoubleClick
        Dim myhwnd, r As Integer
        myhwnd = GetActiveWindow()
        r = CreateRectRgn(0, 0, 300, 300)
        Call SetWindowRgn(myhwnd, r, True)
    End Sub
End Class