main.frm

很好的教程原代码！

VERSION 5.00
Begin VB.Form Main 
   Caption         =   "Form1"
   ClientHeight    =   6345
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   4935
   LinkTopic       =   "Form1"
   ScaleHeight     =   6345
   ScaleWidth      =   4935
   StartUpPosition =   3  '窗口缺省
   Begin VB.CommandButton Command1 
      Caption         =   "获取窗体信息"
      Height          =   375
      Left            =   1200
      TabIndex        =   1
      Top             =   360
      Width           =   1335
   End
   Begin VB.ListBox lstOpenWindows 
      Height          =   3840
      Left            =   360
      TabIndex        =   0
      Top             =   1080
      Width           =   4335
   End
   Begin VB.Label lblCount 
      Caption         =   "Label1"
      Height          =   375
      Left            =   840
      TabIndex        =   2
      Top             =   5160
      Width           =   1575
   End
End
Attribute VB_Name = "Main"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Private Sub Command1_Click()
    lblCount.Caption = GetOpenWindowNames & " open Windows."
End Sub