Vbscript 如何使此脚本在取消时实际停止？

我有一个工作脚本，但如果用户启动它，然后用“取消”按钮中止，脚本将在文件资源管理器打开的任何目录中生成指定的文件夹。显然那不好。我需要脚本停止，如果用户取消，但我不知道如何做到这一点

代码如下：

' 26Apr2015 jkw -- q&d

Option Explicit

Dim g_fso:  Set g_fso = CreateObject("Scripting.FileSystemObject")

Dim tgt: tgt = BrowseFolder("M:\MarcStone Bids", False)


Dim subdirs:  subdirs = Array(_
"Anchors",_
"Color",_
"Engineering",_
"Mold Drawings",_
"Plans and Specs",_
"Plans and Specs\Plans",_
"Plans and Specs\Specs",_
"Revisions and Cost Changes",_
"Shops",_
"Managing Documents",_
"Managing Documents\Accounting",_
"Managing Documents\Approvals",_
"Managing Documents\Bid Documents",_
"Transmittals"_
)

Dim subdir
For Each subdir in subdirs
    g_fso.CreateFolder(tgt & "\" & subdir)
Next

Function BrowseFolder( myStartLocation, blnSimpleDialog )
' This function generates a Browse Folder dialog
' and returns the selected folder as a string.
'
' Arguments:
' myStartLocation   [string]  start folder for dialog, or "My Computer", or
'                             empty string to open in "Desktop\My Documents"
' blnSimpleDialog   [boolean] if False, an additional text field will be
'                             displayed where the folder can be selected
'                             by typing the fully qualified path
'
' Returns:          [string]  the fully qualified path to the selected folder
'
' Based on the Hey Scripting Guys article
' "How Can I Show Users a Dialog Box That Only Lets Them Select Folders?"
' http://www.microsoft.com/technet/scriptcenter/resources/qanda/jun05/hey0617.mspx
'
' Function written by Rob van der Woude
' http://www.robvanderwoude.com
    Const MY_COMPUTER   = &H11&
    Const WINDOW_HANDLE = 0 ' Must ALWAYS be 0

    Dim numOptions, objFolder, objFolderItem
    Dim objPath, objShell, strPath, strPrompt

    ' Set the options for the dialog window
    strPrompt = "Select a folder in which to create subdirectories:"
    If blnSimpleDialog = True Then
        numOptions = 0      ' Simple dialog
    Else
        numOptions = &H10&  ' Additional text field to type folder path
    End If

    ' Create a Windows Shell object
    Set objShell = CreateObject( "Shell.Application" )

    ' If specified, convert "My Computer" to a valid
    ' path for the Windows Shell's BrowseFolder method
    If UCase( myStartLocation ) = "MY COMPUTER" Then
        Set objFolder = objShell.Namespace( MY_COMPUTER )
        Set objFolderItem = objFolder.Self
        strPath = objFolderItem.Path
    Else
        strPath = myStartLocation
    End If

    Set objFolder = objShell.BrowseForFolder( WINDOW_HANDLE, strPrompt, _
                                              numOptions, strPath )

    ' Quit if no folder was selected
    If objFolder Is Nothing Then
        BrowseFolder = ""
        Exit Function
    End If

    ' Retrieve the path of the selected folder
    Set objFolderItem = objFolder.Self
    objPath = objFolderItem.Path

    ' Return the path of the selected folder
    BrowseFolder = objPath
End Function

---

帮助中有此示例代码。这是你需要的电话线<代码>如果（非objFolder为nothing），则

function fnShellBrowseForFolderVB()
    dim objShell
    dim ssfWINDOWS
    dim objFolder

    ssfWINDOWS = 36
    set objShell = CreateObject("Shell.Application")
        set objFolder = objShell.BrowseForFolder(0, "Example", 0, ssfWINDOWS)
            if (not objFolder is nothing) then
                'Add code here.
            end if
        set objFolder = nothing
    set objShell = nothing
end function

---

然后

err.raise num

或

wscript.quit

如果未选择文件夹，则函数将返回一个空字符串，因此

....
tgt = BrowseFolder("M:\MarcStone Bids", False)
' If no folder selected, quit 
If tgt="" Then 
    Wscript.Quit 1
End If
....