无标题栏窗体的拖动.frm

个人VB学习源码精选,自己学习时的一些编程小程序,希望对大家有帮助

VERSION 5.00
Begin VB.Form Form1 
   BorderStyle     =   0  'None
   Caption         =   "Form1"
   ClientHeight    =   3195
   ClientLeft      =   0
   ClientTop       =   0
   ClientWidth     =   4680
   LinkTopic       =   "Form1"
   ScaleHeight     =   3195
   ScaleWidth      =   4680
   ShowInTaskbar   =   0   'False
   StartUpPosition =   3  '窗口缺省
   Begin VB.CommandButton Command1 
      Caption         =   "退出"
      Height          =   330
      Left            =   3555
      TabIndex        =   0
      Top             =   2745
      Width           =   960
   End
   Begin VB.Label Label1 
      Caption         =   "请拖动我试试！"
      Enabled         =   0   'False
      BeginProperty Font 
         Name            =   "宋体"
         Size            =   14.25
         Charset         =   134
         Weight          =   700
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   375
      Left            =   1170
      TabIndex        =   1
      Top             =   1080
      Width           =   2130
   End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Private Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long
Private Declare Function ReleaseCapture Lib "user32" () As Long
Private Const WM_NCLBUTTONDOWN = &HA1
Private Const HTCAPTION = 2

Private Sub Command1_Click()
    Unload Me
End Sub

Private Sub Form_MouseDown(Button As Integer, Shift As Integer, X As Single, Y As Single)
    Dim R As Long
    Dim i
    If Button = 1 Then
        i = ReleaseCapture()
        R = SendMessage(hwnd, WM_NCLBUTTONDOWN, HTCAPTION, 0)
    End If
End Sub