Unlocking Password Protected VBA project - vba

Question

I am trying to unlock a password protected excel sheet using code found here
I am successfully able to unlock the excel file, but I do not want the user to see any windows. I tried setting this setting:
xlAp.Visible = False
But I still see the Project Properties window. How can you hide all the windows in this process?
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

Answer 1

#Amelie:
Ret1 = FindWindow(vbNullString, "VBAProject - Project Properties")
If Ret1 <> 0 Then
ChildRet1 = FindWindowEx(Ret1, ByVal 0&, "Button", vbNullString)
If ChildRet1 <> 0 Then
strBuff = String(GetWindowTextLength(ChildRet1) + 1, Chr$(0))
GetWindowText ChildRet1, strBuff, Len(strBuff)
ButCap = strBuff
Do While ChildRet1 <> 0
If InStr(1, ButCap, "OK") Then
OpenRet1 = ChildRet1
Exit Do
End If
ChildRet1 = FindWindowEx(Ret, ChildRet1, "Button", vbNullString)
strBuff = String(GetWindowTextLength(ChildRet1) + 1, Chr$(0))
GetWindowText ChildRet1, strBuff, Len(strBuff)
ButCap = strBuff
Loop
If OpenRet1 <> 0 Then SendMessageA OpenRet1, BM_CLICK, 0, vbNullString
End If
End If