[英]Can VBA Reach Across Instances of Excel?
在一個Excel實例中運行的Excel VBA宏是否可以訪問在另一個Excel實例中運行的工作簿? 例如,我想創建一個在任何正在運行的Excel實例中打開的所有工作簿的列表。
科尼利厄斯的回答部分正確。 他的代碼獲取當前實例,然后創建一個新實例。 無論有多少實例可用, GetObject都只會獲得第一個實例。 我相信的問題是,如何從許多實例中獲取特定實例。
對於VBA項目,使用一個名為Command1的命令按鈕,將兩個模塊(一個代碼模塊)和另一個模塊制成表單。 您可能需要添加對Microsoft.Excel的引用。
此代碼在“即時”窗口中顯示每個正在運行的Excel實例的每個工作簿的所有名稱。
'------------- Code Module --------------
Option Explicit
Declare Function FindWindowEx Lib "User32" Alias "FindWindowExA" (ByVal hWnd1 As Long, ByVal hWnd2 As Long, ByVal lpsz1 As String, ByVal lpsz2 As String) As Long
Declare Function GetClassName Lib "User32" Alias "GetClassNameA" (ByVal hWnd As Long, ByVal lpClassName As String, ByVal nMaxCount As Long) As Long
Declare Function IIDFromString Lib "ole32" (ByVal lpsz As Long, ByRef lpiid As UUID) As Long
Declare Function AccessibleObjectFromWindow Lib "oleacc" (ByVal hWnd As Long, ByVal dwId As Long, ByRef riid As UUID, ByRef ppvObject As Object) As Long
Type UUID 'GUID
Data1 As Long
Data2 As Integer
Data3 As Integer
Data4(7) As Byte
End Type
'------------- Form Module --------------
Option Explicit
Const IID_IDispatch As String = "{00020400-0000-0000-C000-000000000046}"
Const OBJID_NATIVEOM As Long = &HFFFFFFF0
'Sub GetAllWorkbookWindowNames()
Sub Command1_Click()
On Error GoTo MyErrorHandler
Dim hWndMain As Long
hWndMain = FindWindowEx(0&, 0&, "XLMAIN", vbNullString)
Do While hWndMain <> 0
GetWbkWindows hWndMain
hWndMain = FindWindowEx(0&, hWndMain, "XLMAIN", vbNullString)
Loop
Exit Sub
MyErrorHandler:
MsgBox "GetAllWorkbookWindowNames" & vbCrLf & vbCrLf & "Err = " & Err.Number & vbCrLf & "Description: " & Err.Description
End Sub
Private Sub GetWbkWindows(ByVal hWndMain As Long)
On Error GoTo MyErrorHandler
Dim hWndDesk As Long
hWndDesk = FindWindowEx(hWndMain, 0&, "XLDESK", vbNullString)
If hWndDesk <> 0 Then
Dim hWnd As Long
hWnd = FindWindowEx(hWndDesk, 0, vbNullString, vbNullString)
Dim strText As String
Dim lngRet As Long
Do While hWnd <> 0
strText = String$(100, Chr$(0))
lngRet = GetClassName(hWnd, strText, 100)
If Left$(strText, lngRet) = "EXCEL7" Then
GetExcelObjectFromHwnd hWnd
Exit Sub
End If
hWnd = FindWindowEx(hWndDesk, hWnd, vbNullString, vbNullString)
Loop
On Error Resume Next
End If
Exit Sub
MyErrorHandler:
MsgBox "GetWbkWindows" & vbCrLf & vbCrLf & "Err = " & Err.Number & vbCrLf & "Description: " & Err.Description
End Sub
Public Function GetExcelObjectFromHwnd(ByVal hWnd As Long) As Boolean
On Error GoTo MyErrorHandler
Dim fOk As Boolean
fOk = False
Dim iid As UUID
Call IIDFromString(StrPtr(IID_IDispatch), iid)
Dim obj As Object
If AccessibleObjectFromWindow(hWnd, OBJID_NATIVEOM, iid, obj) = 0 Then 'S_OK
Dim objApp As Excel.Application
Set objApp = obj.Application
Debug.Print objApp.Workbooks(1).Name
Dim myWorksheet As Worksheet
For Each myWorksheet In objApp.Workbooks(1).Worksheets
Debug.Print " " & myWorksheet.Name
DoEvents
Next
fOk = True
End If
GetExcelObjectFromHwnd = fOk
Exit Function
MyErrorHandler:
MsgBox "GetExcelObjectFromHwnd" & vbCrLf & vbCrLf & "Err = " & Err.Number & vbCrLf & "Description: " & Err.Description
End Function
我相信VBA比Charles認為的要強大;)
如果只有一些棘手的方法可以從GetObject和CreateObject指向特定實例,那么我們將為您解決問題!
編輯:
如果您是所有實例的創建者,那么列出工作簿之類的東西就不會有問題。 看一下這段代碼:
Sub Excels()
Dim currentExcel As Excel.Application
Dim newExcel As Excel.Application
Set currentExcel = GetObject(, "excel.application")
Set newExcel = CreateObject("excel.application")
newExcel.Visible = True
newExcel.Workbooks.Add
'and so on...
End Sub
我認為在VBA中,您可以訪問另一個正在運行的實例中的應用程序對象 。 如果您知道在另一個實例中打開的工作簿的名稱,則可以獲取對應用程序對象的引用。 參見艾倫·韋特(Allen Waytt)的頁面
最后一部分
Dim xlApp As Excel.Application
Set xlApp = GetObject("c:\\mypath\\ExampleBook.xlsx").Application
允許我獲得打開ExampleBook.xlsx
的實例的應用程序對象的指針。
我認為“ ExampleBook”必須是完整的路徑,至少在Excel 2010中是如此。我目前正在自己進行嘗試,因此,我將在嘗試獲得更多詳細信息時嘗試進行更新。
如果單獨的實例打開了相同的工作簿,則可能會有復雜的情況,但是只有一個實例具有寫訪問權限。
多虧了這篇出色的文章,我有了一個例程才能找到返回計算機上當前正在運行的所有Excel應用程序的數組。 問題是我剛剛升級到64位Office 2013,但一切都出錯了。
通常將... Declare Function ...
轉換為... Declare PtrSafe Function ...
,這在其他地方都有詳細記錄。 但是,我找不到任何文檔的事實是,此升級后原始代碼期望的窗口層次結構(“ XLMAIN”->“ XLDESK”->“ EXCEL7”)已更改。 對於那些追隨我的腳步的人,為了節省您一個下午的閑逛時間,我想我應該發布更新后的腳本。 很難測試,但我認為它也應該向后兼容,以取得良好的效果。
Option Explicit
#If Win64 Then
Private Declare PtrSafe Function FindWindowEx Lib "user32" Alias "FindWindowExA" (ByVal hWnd1 As LongPtr, ByVal hWnd2 As LongPtr, ByVal lpsz1 As String, ByVal lpsz2 As String) As LongPtr
Private Declare PtrSafe Function GetClassName Lib "user32" Alias "GetClassNameA" (ByVal Hwnd As LongPtr, ByVal lpClassName As String, ByVal nMaxCount As LongPtr) As LongPtr
Private Declare PtrSafe Function IIDFromString Lib "ole32" (ByVal lpsz As LongPtr, ByRef lpiid As UUID) As LongPtr
Private Declare PtrSafe Function AccessibleObjectFromWindow Lib "oleacc" (ByVal Hwnd As LongPtr, ByVal dwId As LongPtr, ByRef riid As UUID, ByRef ppvObject As Object) As LongPtr
#Else
Private Declare Function FindWindowEx Lib "user32" Alias "FindWindowExA" (ByVal hWnd1 As Long, ByVal hWnd2 As Long, ByVal lpsz1 As String, ByVal lpsz2 As String) As Long
Private Declare Function GetClassName Lib "user32" Alias "GetClassNameA" (ByVal hwnd As Long, ByVal lpClassName As String, ByVal nMaxCount As Long) As Long
Private Declare Function IIDFromString Lib "ole32" (ByVal lpsz As Long, ByRef lpiid As UUID) As Long
Private Declare Function AccessibleObjectFromWindow Lib "oleacc" (ByVal hwnd As Long, ByVal dwId As Long, ByRef riid As UUID, ByRef ppvObject As Object) As Long
#End If
Type UUID 'GUID
Data1 As Long
Data2 As Integer
Data3 As Integer
Data4(7) As Byte
End Type
Const IID_IDispatch As String = "{00020400-0000-0000-C000-000000000046}"
Const OBJID_NATIVEOM As LongPtr = &HFFFFFFF0
' Run as entry point of example
Public Sub Test()
Dim i As Long
Dim xlApps() As Application
If GetAllExcelInstances(xlApps) Then
For i = LBound(xlApps) To UBound(xlApps)
If xlApps(i).Workbooks(1).Name <> ThisWorkbook.Name Then
MsgBox (xlApps(i).Workbooks(1).Name)
End If
Next
End If
End Sub
' Actual public facing function to be called in other code
Public Function GetAllExcelInstances(xlApps() As Application) As Long
On Error GoTo MyErrorHandler
Dim n As Long
#If Win64 Then
Dim hWndMain As LongPtr
#Else
Dim hWndMain As Long
#End If
Dim app As Application
' Cater for 100 potential Excel instances, clearly could be better
ReDim xlApps(1 To 100)
hWndMain = FindWindowEx(0&, 0&, "XLMAIN", vbNullString)
Do While hWndMain <> 0
Set app = GetExcelObjectFromHwnd(hWndMain)
If Not (app Is Nothing) Then
If n = 0 Then
n = n + 1
Set xlApps(n) = app
ElseIf checkHwnds(xlApps, app.Hwnd) Then
n = n + 1
Set xlApps(n) = app
End If
End If
hWndMain = FindWindowEx(0&, hWndMain, "XLMAIN", vbNullString)
Loop
If n Then
ReDim Preserve xlApps(1 To n)
GetAllExcelInstances = n
Else
Erase xlApps
End If
Exit Function
MyErrorHandler:
MsgBox "GetAllExcelInstances" & vbCrLf & vbCrLf & "Err = " & Err.Number & vbCrLf & "Description: " & Err.Description
End Function
#If Win64 Then
Private Function checkHwnds(xlApps() As Application, Hwnd As LongPtr) As Boolean
#Else
Private Function checkHwnds(xlApps() As Application, Hwnd As Long) As Boolean
#End If
Dim i As Integer
For i = LBound(xlApps) To UBound(xlApps)
If xlApps(i).Hwnd = Hwnd Then
checkHwnds = False
Exit Function
End If
Next i
checkHwnds = True
End Function
#If Win64 Then
Private Function GetExcelObjectFromHwnd(ByVal hWndMain As LongPtr) As Application
#Else
Private Function GetExcelObjectFromHwnd(ByVal hWndMain As Long) As Application
#End If
On Error GoTo MyErrorHandler
#If Win64 Then
Dim hWndDesk As LongPtr
Dim Hwnd As LongPtr
#Else
Dim hWndDesk As Long
Dim Hwnd As Long
#End If
Dim strText As String
Dim lngRet As Long
Dim iid As UUID
Dim obj As Object
hWndDesk = FindWindowEx(hWndMain, 0&, "XLDESK", vbNullString)
If hWndDesk <> 0 Then
Hwnd = FindWindowEx(hWndDesk, 0, vbNullString, vbNullString)
Do While Hwnd <> 0
strText = String$(100, Chr$(0))
lngRet = CLng(GetClassName(Hwnd, strText, 100))
If Left$(strText, lngRet) = "EXCEL7" Then
Call IIDFromString(StrPtr(IID_IDispatch), iid)
If AccessibleObjectFromWindow(Hwnd, OBJID_NATIVEOM, iid, obj) = 0 Then 'S_OK
Set GetExcelObjectFromHwnd = obj.Application
Exit Function
End If
End If
Hwnd = FindWindowEx(hWndDesk, Hwnd, vbNullString, vbNullString)
Loop
On Error Resume Next
End If
Exit Function
MyErrorHandler:
MsgBox "GetExcelObjectFromHwnd" & vbCrLf & vbCrLf & "Err = " & Err.Number & vbCrLf & "Description: " & Err.Description
End Function
我有類似的問題/目標。
而且我得到了ForEachLoops答案,但是需要進行一些更改。 在底部函數(GetExcelObjectFromHwnd)中,他在兩個debug.print命令中都使用了工作簿索引1。 結果是您只看到第一個白平衡。
因此,我接受了他的代碼,並將for循環放入GetExcelObjectFromHwnd內,並將1更改為一個計數器。 結果是我可以獲得所有活動的excel工作簿,並返回跨Excel實例訪問其他WB所需的信息。
我創建了一個Type來簡化信息的檢索並將其傳遞回調用子例程:
Type TargetWBType
name As String
returnObj As Object
returnApp As Excel.Application
returnWBIndex As Integer
End Type
對於名稱,我只使用了基本文件名,例如“ example.xls”。 該代碼段通過在目標WB的每個WS上分配A6的值來證明其功能。 像這樣:
Dim targetWB As TargetWBType
targetWB.name = "example.xls"
Call GetAllWorkbookWindowNames(targetWB)
If Not targetWB.returnObj Is Nothing Then
Set targetWB.returnApp = targetWB.returnObj.Application
Dim ws As Worksheet
For Each ws In targetWB.returnApp.Workbooks(targetWB.returnWBIndex).Worksheets
MsgBox ws.Range("A6").Value
Next
Else
MsgBox "Target WB Not found"
End If
因此,現在ForEachLoop最初創建的ENTIRE模塊看起來像這樣,並且我已經指出了所做的更改。 它確實有一個msgbox彈出窗口,我留在代碼段中用於調試。 找到目標后將其剝離。 代碼:
Declare Function FindWindowEx Lib "User32" Alias "FindWindowExA" (ByVal hWnd1 As Long, ByVal hWnd2 As Long, ByVal lpsz1 As String, ByVal lpsz2 As String) As Long
Declare Function GetClassName Lib "User32" Alias "GetClassNameA" (ByVal hWnd As Long, ByVal lpClassName As String, ByVal nMaxCount As Long) As Long
Declare Function IIDFromString Lib "ole32" (ByVal lpsz As Long, ByRef lpiid As UUID) As Long
Declare Function AccessibleObjectFromWindow Lib "oleacc" (ByVal hWnd As Long, ByVal dwId As Long, ByRef riid As UUID, ByRef ppvObject As Object) As Long
Type UUID 'GUID
Data1 As Long
Data2 As Integer
Data3 As Integer
Data4(7) As Byte
End Type
'------------- Form Module --------------
Option Explicit
Const IID_IDispatch As String = "{00020400-0000-0000-C000-000000000046}"
Const OBJID_NATIVEOM As Long = &HFFFFFFF0
'My code: added targetWB
Sub GetAllWorkbookWindowNames(targetWB As TargetWBType)
On Error GoTo MyErrorHandler
Dim hWndMain As Long
hWndMain = FindWindowEx(0&, 0&, "XLMAIN", vbNullString)
Do While hWndMain <> 0
GetWbkWindows hWndMain, targetWB 'My code: added targetWB
hWndMain = FindWindowEx(0&, hWndMain, "XLMAIN", vbNullString)
Loop
Exit Sub
MyErrorHandler:
MsgBox "GetAllWorkbookWindowNames" & vbCrLf & vbCrLf & "Err = " & Err.Number & vbCrLf & "Description: " & Err.Description
End Sub
'My code: added targetWB
Private Sub GetWbkWindows(ByVal hWndMain As Long, targetWB As TargetWBType)
On Error GoTo MyErrorHandler
Dim hWndDesk As Long
hWndDesk = FindWindowEx(hWndMain, 0&, "XLDESK", vbNullString)
If hWndDesk <> 0 Then
Dim hWnd As Long
hWnd = FindWindowEx(hWndDesk, 0, vbNullString, vbNullString)
Dim strText As String
Dim lngRet As Long
Do While hWnd <> 0
strText = String$(100, Chr$(0))
lngRet = GetClassName(hWnd, strText, 100)
If Left$(strText, lngRet) = "EXCEL7" Then
GetExcelObjectFromHwnd hWnd, targetWB 'My code: added targetWB
Exit Sub
End If
hWnd = FindWindowEx(hWndDesk, hWnd, vbNullString, vbNullString)
Loop
On Error Resume Next
End If
Exit Sub
MyErrorHandler:
MsgBox "GetWbkWindows" & vbCrLf & vbCrLf & "Err = " & Err.Number & vbCrLf & "Description: " & Err.Description
End Sub
'My code: added targetWB
Public Function GetExcelObjectFromHwnd(ByVal hWnd As Long, targetWB As TargetWBType) As Boolean
On Error GoTo MyErrorHandler
Dim fOk As Boolean
fOk = False
Dim iid As UUID
Call IIDFromString(StrPtr(IID_IDispatch), iid)
Dim obj As Object
If AccessibleObjectFromWindow(hWnd, OBJID_NATIVEOM, iid, obj) = 0 Then 'S_OK
Dim objApp As Excel.Application
Set objApp = obj.Application
'My code
Dim wbCount As Integer
For wbCount = 1 To objApp.Workbooks.Count
'End my code
'Not my code
Debug.Print objApp.Workbooks(wbCount).name
'My code
If LCase(objApp.Workbooks(wbCount).name) = LCase(targetWB.name) Then
MsgBox ("Found target: " & targetWB.name)
Set targetWB.returnObj = obj
targetWB.returnWBIndex = wbCount
End If
'End My code
'Not my code
Dim myWorksheet As Worksheet
For Each myWorksheet In objApp.Workbooks(wbCount).Worksheets
Debug.Print " " & myWorksheet.name
DoEvents
Next
'My code
Next
'Not my code
fOk = True
End If
GetExcelObjectFromHwnd = fOk
Exit Function
MyErrorHandler:
MsgBox "GetExcelObjectFromHwnd" & vbCrLf & vbCrLf & "Err = " & Err.Number & vbCrLf & "Description: " & Err.Description
End Function
我重復一遍,這可行,並且使用TargetWB類型中的變量,我可以跨Excel實例可靠地訪問工作簿和工作表。
我在解決方案中看到的唯一潛在問題是,如果您有多個具有相同名稱的WB。 現在,我相信它將返回該名稱的最后一個實例。 如果我們在If If中添加Exit For,我相信它將代替它的第一個實例。 我沒有認真地測試這部分,因為在我的應用程序中,只有一個打開的文件實例。
只是為了補充James MacAdie的答案,我認為您做redim的時間太晚了,因為在checkHwnds函數中,即使您尚未填充最大100的值,也會遇到超出范圍的錯誤,因為您嘗試檢查的值最多為100完全排列? 我將代碼修改為下面的代碼,現在可以為我工作了。
' Actual public facing function to be called in other code
Public Function GetAllExcelInstances(xlApps() As Application) As Long
On Error GoTo MyErrorHandler
Dim n As Long
#If Win64 Then
Dim hWndMain As LongPtr
#Else
Dim hWndMain As Long
#End If
Dim app As Application
' Cater for 100 potential Excel instances, clearly could be better
ReDim xlApps(1 To 100)
hWndMain = FindWindowEx(0&, 0&, "XLMAIN", vbNullString)
Do While hWndMain <> 0
Set app = GetExcelObjectFromHwnd(hWndMain)
If Not (app Is Nothing) Then
If n = 0 Then
n = n + 1
ReDim Preserve xlApps(1 To n)
Set xlApps(n) = app
ElseIf checkHwnds(xlApps, app.Hwnd) Then
n = n + 1
ReDim Preserve xlApps(1 To n)
Set xlApps(n) = app
End If
End If
hWndMain = FindWindowEx(0&, hWndMain, "XLMAIN", vbNullString)
Loop
If n Then
GetAllExcelInstances = n
Else
Erase xlApps
End If
Exit Function
MyErrorHandler:
MsgBox "GetAllExcelInstances" & vbCrLf & vbCrLf & "Err = " & Err.Number & vbCrLf & "Description: " & Err.Description
End Function
我認為僅使用VBA是不可能的,因為您可以訪問的最高級別的對象是Application對象,它是Excel的當前實例。
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