' 导入命名空间
Imports System.Windows.Forms

public class ConvertMouseEventToFormDragEvent
   public Shared Sub Main
        Application.Run(New Form1)
   End Sub
End class


Public Class Form1
    Const HT_CAPTION As Integer = &H2
    Const WM_NCLBUTTONDOWN As Integer = &HA1

    Private Sub DragBar_MouseDown(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles DragBar.MouseDown
        If (e.Button = Windows.Forms.MouseButtons.Left) Then
            DragBar.Capture = False

            Me.WndProc(Message.Create(Me.Handle, WM_NCLBUTTONDOWN, _
                CType(HT_CAPTION, IntPtr), IntPtr.Zero))
        End If
    End Sub

    Private Sub ActClose_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ActClose.Click
        Me.Close()
    End Sub
End Class


<Global.Microsoft.VisualBasic.CompilerServices.DesignerGenerated()> _
Partial Class Form1
    Inherits System.Windows.Forms.Form

    'Form overrides dispose to clean up the component list.
    <System.Diagnostics.DebuggerNonUserCode()> _
    Protected Overrides Sub Dispose(ByVal disposing As Boolean)
        If disposing AndAlso components IsNot Nothing Then
            components.Dispose()
        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.
    <System.Diagnostics.DebuggerStepThrough()> _
    Private Sub InitializeComponent()
        Me.ActClose = New System.Windows.Forms.Button
        Me.DragBar = New System.Windows.Forms.PictureBox
        CType(Me.DragBar, System.ComponentModel.ISupportInitialize).BeginInit()
        Me.SuspendLayout()
        '
        'ActClose
        '
        Me.ActClose.DialogResult = System.Windows.Forms.DialogResult.Cancel
        Me.ActClose.Location = New System.Drawing.Point(208, 80)
        Me.ActClose.Name = "ActClose"
        Me.ActClose.Size = New System.Drawing.Size(75, 23)
        Me.ActClose.TabIndex = 0
        Me.ActClose.Text = "Close"
        Me.ActClose.UseVisualStyleBackColor = True
        '
        'DragBar
        '
        Me.DragBar.BackColor = System.Drawing.SystemColors.ActiveCaption
        Me.DragBar.Location = New System.Drawing.Point(8, 8)
        Me.DragBar.Name = "DragBar"
        Me.DragBar.Size = New System.Drawing.Size(280, 24)
        Me.DragBar.TabIndex = 1
        Me.DragBar.TabStop = False
        '
        'Form1
        '
        Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!)
        Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font
        Me.CancelButton = Me.ActClose
        Me.ClientSize = New System.Drawing.Size(292, 114)
        Me.Controls.Add(Me.DragBar)
        Me.Controls.Add(Me.ActClose)
        Me.FormBorderStyle = System.Windows.Forms.FormBorderStyle.None
        Me.Name = "Form1"
        Me.Text = "Form1"
        CType(Me.DragBar, System.ComponentModel.ISupportInitialize).EndInit()
        Me.ResumeLayout(False)

    End Sub
    Friend WithEvents ActClose As System.Windows.Forms.Button
    Friend WithEvents DragBar As System.Windows.Forms.PictureBox

End Class