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问题:
How can i unprotect my VB project from a vb macro ? i have found this code:
Sub UnprotectVBProject(ByRef WB As Workbook, ByVal Password As String) Dim VBProj As Object Set VBProj = WB.VBProject Application.ScreenUpdating = False 'Ne peut procéder si le projet est non-protégé. If VBProj.Protection 1 Then Exit Sub Set Application.VBE.ActiveVBProject = VBProj 'Utilisation de "SendKeys" Pour envoyer le mot de passe. SendKeys Password & "~" SendKeys "~" 'MsgBox "Après Mot de passe" Application.VBE.CommandBars(1).FindControl(ID:=2578, recursive:=True).Execute Application.Wait (Now + TimeValue("0:00:1")) End Sub
But this solution doesn't work for Excel 2007. It display the authentification's window and print password in my IDE.
Then, my goal is to unprotect my VBproject without displaying this window.
Thanks for any help.
回答1:
EDIT:
Converted this to a BLOG post for VBA and VB.Net.
I have never been in favor of Sendkeys. They are reliable in some case but not always. I have a soft corner for API's though.
What you want can be achieved, however you have to ensure that workbook for which you want to un-protect the VBA has to be opened in a separate Excel Instance.
Here is an example
Let's say we have a workbook who's VBA project looks like this currently.
LOGIC:
Find the Handle of the "VBAProject Password" window using FindWindow
Once that is found, find the handle of the Edit Box in that window using FindWindowEx
Once the handle of the Edit Box is found, simply use SendMessage to write to it.
Find the handle of the Buttons in that window using FindWindowEx
Once the handle of the OK button is found, simply use SendMessage to click it.
RECOMMENDATION:
For API's THIS is the best link I can recommend.
If you wish to become good at API's like FindWindow, FindWindowEx and SendMessage then get a tool that gives you a graphical view of the system’s processes, threads, windows, and window messages. For Ex: uuSpy or Spy++.
Here is what Spy++ will show you for "VBAProject Password" window
TESTING:
Open a new Excel instance and paste the below code in a module.
CODE: (TRIED AND TESTED)
I have commented the code so you shouldn't have any problem understanding it.
Private Declare Function FindWindow Lib "user32" Alias "FindWindowA" _ (ByVal lpClassName As String, ByVal lpWindowName As String) As Long 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 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 SendMessage Lib "user32" Alias "SendMessageA" _ (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long Dim Ret As Long, ChildRet As Long, OpenRet As Long Dim strBuff As String, ButCap As String Dim MyPassword As String Const WM_SETTEXT = &HC Const BM_CLICK = &HF5 Sub UnlockVBA() Dim xlAp As Object, oWb As Object Set xlAp = CreateObject("Excel.Application") xlAp.Visible = True '~~> Open the workbook in a separate instance Set oWb = xlAp.Workbooks.Open("C:\Sample.xlsm") '~~> Launch the VBA Project Password window '~~> I am assuming that it is protected. If not then '~~> put a check here. xlAp.VBE.CommandBars(1).FindControl(ID:=2578, recursive:=True).Execute '~~> Your passwword to open then VBA Project MyPassword = "Blah Blah" '~~> Get the handle of the "VBAProject Password" Window Ret = FindWindow(vbNullString, "VBAProject Password") If Ret 0 Then 'MsgBox "VBAProject Password Window Found" '~~> Get the handle of the TextBox Window where we need to type the password ChildRet = FindWindowEx(Ret, ByVal 0&, "Edit", vbNullString) If ChildRet 0 Then 'MsgBox "TextBox's Window Found" '~~> This is where we send the password to the Text Window SendMess MyPassword, ChildRet DoEvents '~~> Get the handle of the Button's "Window" ChildRet = FindWindowEx(Ret, ByVal 0&, "Button", vbNullString) '~~> Check if we found it or not If ChildRet 0 Then 'MsgBox "Button's Window Found" '~~> Get the caption of the child window strBuff = String(GetWindowTextLength(ChildRet) + 1, Chr$(0)) GetWindowText ChildRet, strBuff, Len(strBuff) ButCap = strBuff '~~> Loop through all child windows Do While ChildRet 0 '~~> Check if the caption has the word "OK" If InStr(1, ButCap, "OK") Then '~~> If this is the button we are looking for then exit OpenRet = ChildRet Exit Do End If '~~> Get the handle of the next child window ChildRet = FindWindowEx(Ret, ChildRet, "Button", vbNullString) '~~> Get the caption of the child window strBuff = String(GetWindowTextLength(ChildRet) + 1, Chr$(0)) GetWindowText ChildRet, strBuff, Len(strBuff) ButCap = strBuff Loop '~~> Check if we found it or not If OpenRet 0 Then '~~> Click the OK Button SendMessage ChildRet, BM_CLICK, 0, vbNullString Else MsgBox "The Handle of OK Button was not found" End If Else MsgBox "Button's Window Not Found" End If Else MsgBox "The Edit Box was not found" End If Else MsgBox "VBAProject Password Window was not Found" End If End Sub Sub SendMess(Message As String, hwnd As Long) Call SendMessage(hwnd, WM_SETTEXT, False, ByVal Message) End Sub
回答2:
I know you've locked this for new answers but I had a few issues with the above code, principally that I'm working in Office 64-bit (VBA7). However I also made it so the code would work in the current instance of Excel and added a bit more error checking and formatted it up to be pasted into a separate module with only the method UnlockProject exposed.
For full disclosure I really started with the code in this post although it's a variant on a theme.
The code also shows conditional compilation constants so that it ought to be compatible with both 32-bit and 64-bit flavours of Excel at the same time. I used this page to help me with figuring this out.
Anyways here's the code. Hope someone finds it useful:
Option Explicit #If VBA7 Then Private Declare PtrSafe Function FindWindowEx Lib "user32" Alias "FindWindowExA" (ByVal hwndParent As LongPtr, ByVal hwndChildAfter As LongPtr, ByVal lpszClass As String, ByVal lpszWindow As String) As LongPtr Private Declare PtrSafe Function GetParent Lib "user32" (ByVal hWnd As LongPtr) As LongPtr Private Declare PtrSafe Function GetDlgItem Lib "user32" (ByVal hDlg As LongPtr, ByVal nIDDlgItem As Long) As LongPtr ' nIDDlgItem = int? Private Declare PtrSafe Function GetDesktopWindow Lib "user32" () As LongPtr Private Declare PtrSafe Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hWnd As LongPtr, ByVal Msg As Long, ByVal wParam As Long, lParam As Any) As Long Private Declare PtrSafe Function SetFocusAPI Lib "user32" Alias "SetFocus" (ByVal hWnd As LongPtr) As LongPtr Private Declare PtrSafe Function LockWindowUpdate Lib "user32" (ByVal hWndLock As LongPtr) As Long Private Declare PtrSafe Function SetTimer Lib "user32" (ByVal hWnd As LongPtr, ByVal nIDEvent As LongPtr, ByVal uElapse As Long, ByVal lpTimerFunc As LongPtr) As LongPtr Private Declare PtrSafe Function KillTimer Lib "user32" (ByVal hWnd As LongPtr, ByVal uIDEvent As LongPtr) As Long Private Declare PtrSafe Sub Sleep Lib "kernel32" (ByVal dwMilliseconds As Long) #Else Private Declare Function FindWindowEx Lib "user32" Alias "FindWindowExA" (ByVal hwndParent As Long, ByVal hwndChildAfter As Long, ByVal lpszClass As String, ByVal lpszWindow As String) As Long Private Declare Function GetParent Lib "user32" (ByVal hWnd As Long) As Long Private Declare Function GetDlgItem Lib "user32" (ByVal hDlg As Long, ByVal nIDDlgItem As Long) As Long ' nIDDlgItem = int? Private Declare Function GetDesktopWindow Lib "user32" () As Long Private Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hWnd As Long, ByVal Msg As Long, ByVal wParam As Long, lParam As Any) As Long Private Declare Function SetFocusAPI Lib "user32" Alias "SetFocus" (ByVal hWnd As Long) As Long Private Declare Function LockWindowUpdate Lib "user32" (ByVal hWndLock As Long) As Long Private Declare Function SetTimer Lib "user32" (ByVal hWnd As Long, ByVal nIDEvent As Long, ByVal uElapse As Long, ByVal lpTimerFunc As Long) As Long Private Declare Function KillTimer Lib "user32" (ByVal hWnd As Long, ByVal uIDEvent As Long) As Long Private Declare Sub Sleep Lib "kernel32" (ByVal dwMilliseconds As Long) #End If Private Const WM_CLOSE As Long = &H10 Private Const WM_GETTEXT As Long = &HD Private Const EM_REPLACESEL As Long = &HC2 Private Const EM_SETSEL As Long = &HB1 Private Const BM_CLICK As Long = &HF5& Private Const TCM_SETCURFOCUS As Long = &H1330& Private Const IDPassword As Long = &H155E& Private Const IDOK As Long = &H1& Private Const TimeoutSecond As Long = 2 Private g_ProjectName As String Private g_Password As String Private g_Result As Long #If VBA7 Then Private g_hwndVBE As LongPtr Private g_hwndPassword As LongPtr #Else Private g_hwndVBE As Long Private g_hwndPassword As Long #End If Sub Test_UnlockProject() Select Case UnlockProject(ActiveWorkbook.VBProject, "Test") Case 0: MsgBox "The project was unlocked" Case 2: MsgBox "The active project was already unlocked" Case Else: MsgBox "Error or timeout" End Select End Sub Public Function UnlockProject(ByVal Project As Object, ByVal Password As String) As Long #If VBA7 Then Dim lRet As LongPtr #Else Dim lRet As Long #End If Dim timeout As Date On Error GoTo ErrorHandler UnlockProject = 1 ' If project already unlocked then no need to do anything fancy ' Return status 2 to indicate already unlocked If Project.Protection vbext_pp_locked Then UnlockProject = 2 Exit Function End If ' Set global varaibles for the project name, the password and the result of the callback g_ProjectName = Project.Name g_Password = Password g_Result = 0 ' Freeze windows updates so user doesn't see the magic happening :) ' This is dangerous if the program crashes as will 'lock' user out of Windows ' LockWindowUpdate GetDesktopWindow() ' Switch to the VBE ' and set the VBE window handle as a global variable Application.VBE.MainWindow.Visible = True g_hwndVBE = Application.VBE.MainWindow.hWnd ' Run 'UnlockTimerProc' as a callback lRet = SetTimer(0, 0, 100, AddressOf UnlockTimerProc) If lRet = 0 Then Debug.Print "error setting timer" GoTo ErrorHandler End If ' Switch to the project we want to unlock Set Application.VBE.ActiveVBProject = Project If Not Application.VBE.ActiveVBProject Is Project Then GoTo ErrorHandler ' Launch the menu item Tools -> VBA Project Properties ' This will trigger the password dialog ' which will then get picked up by the callback Application.VBE.CommandBars.FindControl(ID:=2578).Execute ' Loop until callback procedure 'UnlockTimerProc' has run ' determine run by watching the state of the global variable 'g_result' ' ... or backstop of 2 seconds max timeout = Now() + TimeSerial(0, 0, TimeoutSecond) Do While g_Result = 0 And Now() g_Password Then GoTo Continue ' Now we need to close the Project Properties window we opened to trigger ' the password input in the first place ' Like the current routine, do it as a callback lRet = SetTimer(0, 0, 100, AddressOf ClosePropertiesWindow) ' Click the OK button lRet = SetFocusAPI(hWndOK) lRet2 = SendMessage(hWndOK, BM_CLICK, 0, ByVal 0&) ' Set the gloabal variable to success to flag back up to the initiating routine ' that this worked g_Result = 1 Exit Do ' If we get here then something didn't work above ' Wait 0.1 secs and try again ' Master loop is capped with a longstop of 2 secs to terminate endless loops Continue: DoEvents Sleep 100 Loop Exit Function ' If we get here something went wrong so close the password dialog box (if we have a handle) ' and unfreeze window updates (if we set that in the first place) ErrorHandler: Debug.Print Err.Number If hWndPassword 0 Then SendMessage hWndPassword, WM_CLOSE, 0, ByVal 0& LockWindowUpdate 0 End Function #If VBA7 Then Function ClosePropertiesWindow(ByVal hWnd As LongPtr, ByVal uMsg As Long, ByVal idEvent As LongPtr, ByVal dwTime As Long) As Long #Else Function ClosePropertiesWindow(ByVal hWnd As Long, ByVal uMsg As Long, ByVal idEvent As Long, ByVal dwTime As Long) As Long #End If #If VBA7 Then Dim hWndTmp As LongPtr Dim hWndOK As LongPtr Dim lRet As LongPtr #Else Dim hWndTmp As Long Dim hWndOK As Long Dim lRet As Long #End If Dim lRet2 As Long Dim timeout As Date Dim sCaption As String ' Protect ourselves against failure :) On Error GoTo ErrorHandler ' Kill timer used to initiate this callback KillTimer 0, idEvent ' Determine the Title for the project properties dialog sCaption = g_ProjectName & " - Project Properties" Debug.Print sCaption ' Set a max timeout of 2 seconds to guard against endless loop failure timeout = Now() + TimeSerial(0, 0, TimeoutSecond) Do While Now()
