mdiform1.frm

上传的包含两个文件

VERSION 5.00
Begin VB.MDIForm MDIForm1 
   BackColor       =   &H8000000C&
   Caption         =   "多文档记事本"
   ClientHeight    =   4860
   ClientLeft      =   165
   ClientTop       =   735
   ClientWidth     =   6090
   LinkTopic       =   "MDIForm1"
   StartUpPosition =   3  '窗口缺省
   Begin VB.Menu file 
      Caption         =   "文件"
      Begin VB.Menu new 
         Caption         =   "新建"
      End
      Begin VB.Menu exit 
         Caption         =   "退出"
      End
   End
   Begin VB.Menu edit 
      Caption         =   "编辑"
      Begin VB.Menu cut 
         Caption         =   "剪切"
      End
      Begin VB.Menu del 
         Caption         =   "删除"
      End
      Begin VB.Menu sel 
         Caption         =   "全选"
      End
      Begin VB.Menu paste 
         Caption         =   "粘贴"
      End
   End
End
Attribute VB_Name = "MDIForm1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Private Sub loadnewdoc()
Static ldocumentcount As Long
Dim frmd As Mydocument
ldocumentcount = ldocumentcount + 1
Set frmd = New Mydocument
frmd.Caption = "文档" & ldocumentcount
frmd.Show
End Sub

Private Sub cut_Click()
Clipboard.SetText MDIForm1.ActiveForm.ActiveControl.SelText
MDIForm1.ActiveForm.ActiveControl.SelText = ""
End Sub

Private Sub del_Click()
MDIForm1.ActiveForm.ActiveControl.SelText = ""

End Sub

Private Sub exit_Click()
Unload MDIForm1
End
End Sub

Private Sub new_Click()
loadnewdoc

End Sub

Private Sub paste_Click()
 MDIForm1.ActiveForm.ActiveControl.SelText = Clipboard.GetText()
End Sub

Private Sub sel_Click()
MDIForm1.ActiveForm.ActiveControl.SelStart = 0
MDIForm1.ActiveForm.ActiveControl.SelLength = Len(MDIForm1.ActiveForm.ActiveControl.Text)

End Sub