Hide characters in macro for password control - vba

Question

I have created a macro to insert an image, when an individual presses a button on the spreadsheet the below macro will run and a message box will appear for the individual to input a password, if correct the image will be inserted. This works fine but i would like the message box to hide the password with stars e.g. ********
Here is the current Macro:
Sub M_Reeve()
'Create the password message box
Dim Answer As String
Answer = InputBox("Input Operator Stamp Password", "Password")
If Answer = "Martin" Then
'Run the copy and paste "Stamp1" macro from module 2
Stamp1
'return an error if wrong password
Else: MsgBox "Wrong password", vbCritical + vbOKCancel, "Incorrect Password"
End If
End Sub
Thanks in advance

Answer 1

This work for me in Excel 2010 32bit.
Create new Module and Paste this code:
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
'~~> 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$(256, " ")
lngBuffer = 255
If lngCode = HCBT_ACTIVATE Then
RetVal = GetClassName(wParam, strClassName, lngBuffer)
'~~> Class name of the Inputbox
If Left$(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
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
Then in your code replace InputBox with InputBoxDK
I found this code in other site in the net and as I remember it was by #Siddharth Rout.