DOC_LIB_PASSBOX.md

DOCUMENTATION LIB_PASSBOX

Tout ce code ne sert à exposer qu'une seule fonction :

Function InputBoxDK(Prompt As String, Optional Title As String, _
            Optional Default As String, _
            Optional Xpos As Long, _
            Optional Ypos As Long, _
            Optional Helpfile As String, _
            Optional Context As Long) As String

Elle permet d'afficher un prompt à l'utilisateur pour qu'il tape un mot de passe. Ainsi les caractères affichés seront des " * ".

LIB_PASSBOX.vbs

Option Explicit
'////////////////////////////////////////////////////////////////////
'Password masked inputbox
'Allows you to hide characters entered in a VBA Inputbox.
'
'Code written by Daniel Klann
'http://www.danielklann.com/
'March 2003
'// Kindly permitted to be amended
'// Amended by Ivan F Moala
'// [url=http://www.xcelfiles.com]Microsoft Excel Files by Ivan F Moala contains VBA API WMI VBS and formulas. Remember can do.[/url]
'// April 2003
'// Works for Xl2000+ due the AddressOf Operator
'//
'// Amended 5th March 2004 for Gopal
'// This allows it to be run on Xl97+
'////////////////////////////////////////////////////////////////////
'API functions to be used
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 As Long
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
'// Make it public = avail to ALL Modules
'// Lets simulate the VBA Input Function
Public Function InputBoxDK(Prompt As String, Optional Title As String, _
            Optional Default As String, _
            Optional Xpos As Long, _
            Optional Ypos As Long, _
            Optional Helpfile As String, _
            Optional Context As Long) As String
   
Dim lngModHwnd As Long, lngThreadID As Long
   
'// Lets handle any Errors JIC! due to HookProc> App hang!
On Error GoTo ExitProperly
lngThreadID = GetCurrentThreadId
lngModHwnd = GetModuleHandle(vbNullString)
 
#If VBA6 Then
    hHook = SetWindowsHookEx(WH_CBT, AddressOf NewProc, lngModHwnd, lngThreadID)
#Else
    hHook = SetWindowsHookEx(WH_CBT, AddrOf("NewProc"), lngModHwnd, lngThreadID)
#End If
If Xpos Then
    InputBoxDK = InputBox(Prompt, Title, Default, Xpos, Ypos, Helpfile, Context)
Else
    InputBoxDK = InputBox(Prompt, Title, Default, , , Helpfile, Context)
End If
ExitProperly:
UnhookWindowsHookEx hHook
End Function