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View Full Version : [SOLVED:] Code wont work with office 64 bit


Agent Smith
11-02-2019, 09:13 AM
I used the code below to mask the characters typed into an input box. It worked fine with 32 bit office. I had to add ptrsafe stop the database showing an error on startup. Despite this the code no longer functions in office 64 bit.

Can anyone help getting it working again or point me to another version that will?


' Password masked inputbox
' Allows you to hide characters entered in a VBA Inputbox.
' Code written by Daniel Klann
' March 2003
'API functions to be used
Private Declare PtrSafe Function CallNextHookEx Lib "user32" (ByVal hHook As Long, _
ByVal ncode As Long, ByVal wParam As Long, lParam As Any) As Long
Private Declare PtrSafe Function GetModuleHandle Lib "kernel32" Alias "GetModuleHandleA" _
(ByVal lpModuleName As String) As Long
Private Declare PtrSafe Function SetWindowsHookEx Lib "user32" Alias "SetWindowsHookExA" _
(ByVal idHook As Long, ByVal lpfn As Long, ByVal hmod As Long, _
ByVal dwThreadId As Long) As Long
Private Declare PtrSafe Function UnhookWindowsHookEx Lib "user32" (ByVal hHook As Long) As Long
Private Declare PtrSafe Function SendDlgItemMessage Lib "user32" Alias "SendDlgItemMessageA" _
(ByVal hDlg As Long, ByVal nIDDlgItem As Long, ByVal wMsg As Long, _
ByVal wParam As Long, ByVal lParam As Long) As Long
Private Declare PtrSafe Function GetClassName Lib "user32" Alias "GetClassNameA" (ByVal hwnd As Long, _
ByVal lpClassName As String, ByVal nMaxCount As Long) As Long
Private Declare PtrSafe Function GetCurrentThreadId Lib "kernel32" () As Long
' Constants to be used in our API functions
Private Const EM_SETPASSWORDCHAR = &HCC
Private Const WH_CBT = 5
Private Const HCBT_ACTIVATE = 5
Private Const HC_ACTION = 0
Private hHook As Long

Public Function NewProc(ByVal lngCode As Long, ByVal wParam As Long, ByVal lParam As Long) As Long
Dim retval
Dim strClassName As String, lngBuffer As Long
If lngCode < HC_ACTION Then
NewProc = CallNextHookEx(hHook, lngCode, wParam, lParam)
Exit Function
End If
strClassName = String$(256, " ")
lngBuffer = 255
If lngCode = HCBT_ACTIVATE Then 'A window has been activated
retval = GetClassName(wParam, strClassName, lngBuffer)
If Left$(strClassName, retval) = "#32770" Then 'Class name of the Inputbox
' This changes the edit control so that it display the password character *.
' You can change the Asc("*") as you please.
SendDlgItemMessage wParam, &H1324, EM_SETPASSWORDCHAR, Asc("*"), &H0
End If
End If
' This line will ensure that any other hooks that may be in place are called correctly.
CallNextHookEx hHook, lngCode, wParam, lParam
End Function

Public Function InputBoxDK(Prompt, Optional Title, Optional Default, Optional XPos, _
Optional YPos, Optional HelpFile, Optional Context) As String
Dim lngModHwnd As Long, lngThreadID As Long
lngThreadID = GetCurrentThreadId
lngModHwnd = GetModuleHandle(vbNullString)
hHook = SetWindowsHookEx(WH_CBT, AddressOf NewProc, lngModHwnd, lngThreadID)
InputBoxDK = InputBox(Prompt, Title, Default, XPos, YPos, HelpFile, Context)
UnhookWindowsHookEx hHook
End Function 'Hope someone can use it!
Agent Smith
11-02-2019, 11:29 AM
I hate to answer my own question but I should have researched more before posting:


Option Explicit
' API CONSTANTS FOR PRIVATE INPUTBOX
#If VBA7 Then
Private Declare PtrSafe Function CallNextHookEx Lib "user32" (ByVal hHook As LongPtr, _
ByVal ncode As Long, ByVal wParam As LongPtr, lParam As Any) As LongPtr
Private Declare PtrSafe Function GetModuleHandle Lib "kernel32" Alias _
"GetModuleHandleA" (ByVal lpModuleName As String) As LongPtr
Private Declare PtrSafe Function SetWindowsHookEx Lib "user32" Alias "SetWindowsHookExA" _
(ByVal idHook As Long, ByVal lpfn As LongPtr, ByVal hmod As LongPtr, ByVal dwThreadId As Long) As LongPtr
Private Declare PtrSafe Function UnhookWindowsHookEx Lib "user32" (ByVal hHook As LongPtr) As Long
Private Declare PtrSafe Function SendDlgItemMessage Lib "user32" Alias "SendDlgItemMessageA" _
(ByVal hDlg As LongPtr, ByVal nIDDlgItem As Long, ByVal wMsg As Long, ByVal wParam As LongPtr, ByVal lParam As LongPtr) As LongPtr
Private Declare PtrSafe Function GetClassName Lib "user32" Alias "GetClassNameA" _
(ByVal hwnd As LongPtr, ByVal lpClassName As String, ByVal nMaxCount As Long) As Long
Private Declare PtrSafe Function GetCurrentThreadId Lib "kernel32" () As Long
#Else
Private Declare Function CallNextHookEx Lib "user32" (ByVal hHook As Long, _
ByVal ncode As Long, ByVal wParam As Long, lParam As Any) As Long
Private Declare Function GetModuleHandle Lib "kernel32" Alias _
"GetModuleHandleA" (ByVal lpModuleName As String) As Long
Private Declare Function SetWindowsHookEx Lib "user32" Alias "SetWindowsHookExA" _
(ByVal idHook As Long, ByVal lpfn As Long, ByVal hmod As Long, _
ByVal dwThreadId As Long) As Long
Private Declare Function UnhookWindowsHookEx Lib "user32" (ByVal hHook As Long) As Long
Private Declare Function SendDlgItemMessage Lib "user32" Alias "SendDlgItemMessageA" _
(ByVal hDlg As Long, ByVal nIDDlgItem As Long, ByVal wMsg As Long, _
ByVal wParam As Long, ByVal lParam As Long) 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 GetCurrentThreadId Lib "kernel32" () As Long
#End If
' Constants to be used in our API functions
Private Const EM_SETPASSWORDCHAR = &HCC
Private Const WH_CBT = 5
Private Const HCBT_ACTIVATE = 5
Private Const HC_ACTION = 0
#If VBA7 Then
Private hHook As LongPtr
#Else
Private hHook As Long
#End If
' PRIVATE PASSWORDS FOR INPUTBOX
' Password masked inputbox
' Allows you to hide characters entered in a VBA Inputbox.
' Code written by Daniel Klann
' March 2003
' 64-bit modifications developed by Alexey Tseluiko and Ryan Wells (wellsr.com)
' February 2019
#If VBA7 Then
Public Function NewProc(ByVal lngCode As Long, ByVal wParam As Long, ByVal lParam As Long) As LongPtr
#Else
Public Function NewProc(ByVal lngCode As Long, ByVal wParam As Long, ByVal lParam As Long) As Long
#End If
Dim RetVal
Dim strClassName As String, lngBuffer As Long
If lngCode < HC_ACTION Then
NewProc = CallNextHookEx(hHook, lngCode, wParam, lParam)
Exit Function
End If
strClassName = String$(256, " ")
lngBuffer = 255
If lngCode = HCBT_ACTIVATE Then 'A window has been activated
RetVal = GetClassName(wParam, strClassName, lngBuffer)
If Left$(strClassName, RetVal) = "#32770" Then
'This changes the edit control so that it display the password character *.
'You can change the Asc("*") as you please.
SendDlgItemMessage wParam, &H1324, EM_SETPASSWORDCHAR, asc("*"), &H0
End If
End If
'This line will ensure that any other hooks that may be in place are
'called correctly.
CallNextHookEx hHook, lngCode, wParam, lParam
End Function

Function InputBoxDK(Prompt, Title) As String
#If VBA7 Then
Dim lngModHwnd As LongPtr
#Else
Dim lngModHwnd As Long
#End If
Dim lngThreadID As Long
lngThreadID = GetCurrentThreadId
lngModHwnd = GetModuleHandle(vbNullString)
hHook = SetWindowsHookEx(WH_CBT, AddressOf NewProc, lngModHwnd, lngThreadID)
InputBoxDK = InputBox(Prompt, Title)
UnhookWindowsHookEx hHook
End Function