确定VBE是否打开

Question

我正在尝试开发一个'自动运行'宏来确定VBE是否打开(不一定是焦点窗口,只是打开).如果这是真的那么......采取一些行动.

如果这个宏连接到CommandButton它可以工作,但我不能让它在ThisWorkbook中的任何地方运行:

Sub CloseVBE()
    'use the MainWindow Property which represents
    ' the main window of the Visual Basic Editor - open the code window in VBE,
    ' but not the Project Explorer if it was closed previously:
    If Application.VBE.MainWindow.Visible = True Then
        MsgBox ""
        'close VBE window:
        Application.VBE.MainWindow.Visible = False
    End If

End Sub

我得到了以下功能来做同样的事情,但我无法让它工作:

Option Explicit

Private Declare Function FindWindow Lib "User32" Alias "FindWindowA" (ByVal lpClassName As String, ByVal lpWindowName As String) As Long
Private Declare Function GetWindowText Lib "User32" Alias "GetWindowTextA" (ByVal hWnd As Long, ByVal lpString As String, ByVal cch As Long) As Long
Private Declare Function GetWindowTextLength Lib "User32" Alias "GetWindowTextLengthA" (ByVal hWnd As Long) As Long
Private Declare Function GetWindow Lib "User32" (ByVal hWnd As Long, ByVal wCmd As Long) As Long

Private Const GW_HWNDNEXT = 2

Function VBE_IsOpen() As Boolean

    Const appName       As String = "Visual Basic for Applications"

    Dim stringBuffer    As String
    Dim temphandle      As Long

    VBE_IsOpen = False

    temphandle = FindWindow(vbNullString, vbNullString)
    Do While temphandle <> 0
        stringBuffer = String(GetWindowTextLength(temphandle) + 1, Chr$(0))
        GetWindowText temphandle, stringBuffer, Len(stringBuffer)
        stringBuffer = Left$(stringBuffer, Len(stringBuffer) - 1)
        If InStr(1, stringBuffer, appName) > 0 Then
            VBE_IsOpen = True
            CloseVBE
        End If
        temphandle = GetWindow(temphandle, GW_HWNDNEXT)
    Loop

End Function

1/23/2018以下是对原始问题的更新:

我找到了以下代码,完全按照我的需要执行,但在关闭工作簿时,行上的宏错误显示:

Public Sub StopEventHook(lHook As Long)
    Dim LRet As Long
    Set lHook = 0'<<<------ When closing workbook, errors out on this line.
    If lHook = 0 Then Exit Sub
    LRet = UnhookWinEvent(lHook)    

    Exit Sub
End Sub

这是整个代码,将其粘贴到常规模块中:

Option Explicit

Private Const EVENT_SYSTEM_FOREGROUND = &H3&
Private Const WINEVENT_OUTOFCONTEXT = 0

Private Declare Function SetWinEventHook Lib "user32.dll" (ByVal eventMin As Long, ByVal eventMax As Long, _
    ByVal hmodWinEventProc As Long, ByVal pfnWinEventProc As Long, ByVal idProcess As Long, _
    ByVal idThread As Long, ByVal dwFlags As Long) As Long
Private Declare Function GetCurrentProcessId Lib "kernel32" () As Long
Private Declare Function GetWindowThreadProcessId Lib "user32" (ByVal hWnd As Long, lpdwProcessId As Long) As Long

Private pRunningHandles As Collection

Public Function StartEventHook() As Long
  If pRunningHandles Is Nothing Then Set pRunningHandles = New Collection
  StartEventHook = SetWinEventHook(EVENT_SYSTEM_FOREGROUND, EVENT_SYSTEM_FOREGROUND, 0&, AddressOf WinEventFunc, 0, 0, WINEVENT_OUTOFCONTEXT)
  pRunningHandles.Add StartEventHook
End Function

Public Sub StopEventHook(lHook As Long)
  Dim LRet As Long
  On Error Resume Next
  Set lHook = 0  '<<<------ When closing workbook, errors out on this line.
    If lHook = 0 Then Exit Sub
    LRet = UnhookWinEvent(lHook)    

    Exit Sub
End Sub

Public Sub StartHook()
    StartEventHook
End Sub

Public Sub StopAllEventHooks()
  Dim vHook As Variant, lHook As Long
  For Each vHook In pRunningHandles
    lHook = vHook
    StopEventHook lHook
  Next vHook
End Sub

Public Function WinEventFunc(ByVal HookHandle As Long, ByVal LEvent As Long, _
                            ByVal hWnd As Long, ByVal idObject As Long, ByVal idChild As Long, _
                            ByVal idEventThread As Long, ByVal dwmsEventTime As Long) As Long
  'This function is a callback passed to the win32 api
  'We CANNOT throw an error or break. Bad things will happen.
  On Error Resume Next
  Dim thePID As Long

  If LEvent = EVENT_SYSTEM_FOREGROUND Then
    GetWindowThreadProcessId hWnd, thePID
    If thePID = GetCurrentProcessId Then
      Application.OnTime Now, "Event_GotFocus"
    Else
      Application.OnTime Now, "Event_LostFocus"
    End If
  End If

  On Error GoTo 0
End Function

Public Sub Event_GotFocus()
    Sheet1.[A1] = "Got Focus"
End Sub

Public Sub Event_LostFocus()
    Sheet1.[A1] = "Nope"
End Sub

将其粘贴到ThisWorkbook中:

Option Explicit

Private Sub Workbook_BeforeClose(Cancel As Boolean)
    StopAllEventHooks
End Sub

Private Sub Workbook_Open()
    StartHook
End Sub

Answer 1

为什么不直接将ThisWorkBook 模块与Workbook_Open事件一起使用？

ThisWorkBook代码模块中的代码

 Private Sub Workbook_Open()         ' or...  Sub Workbook_Activate()
   ' checkIsVBEOpen
   If Application.VBE.MainWindow.Visible = True Then
      MsgBox "VBE window is open", vbInformation
      ' do something
      ' ...
      ' close VBE window
        Application.VBE.MainWindow.Visible = False
    Else
      MsgBox "VBE window is NOT open"   ' do nothing else
   End If
End Sub