input box password char

**DrewDog_21** · Jun 15th, 2000, 06:41 AM

howdy folks -

does anyone know how to put a password character on an InputBox? or is it possible to use an API call or something else to create an Inputbox and then modify it so that a password character can be added?

**Aaron Young** · Jun 15th, 2000, 07:38 AM

Here's some wrapper code I wrote do extend the functionality of the Inputbox (including a password char):

In a Module:

Code:

'*******************************************************
'* InputBoxEx() - Written by Aaron Young, Jan/Feb 2000
'*
'*         MailTo:[email protected]
'*
'* © Copyright 2000, Aaron Young - All rights reserved.
'*
'* Allows the inbuilt InputBox to be Customized in
'* the following ways:
'*
'* Back/ForeColor
'* Font/Fontsize
'* Dialog Centering
'* Password Character Masking
'* Can Raise a Trappable Error when the Dialog is Cancelled
'*
'* Usage:
'*
'* Result = InputboxEx( _
'* Message,[Title],[Default],[Default],[XPos],[YPos], _
'* [HelpFile],[Context],[ForeColor],[BackColor], _
'* [FontName],[FontSize],[PasswordChar],[CancelError])
'*
'* This code is Freeware, but if you use it in whole
'* or part, I would appreciate some credit for my work.
'*
'*******************************************************

Option Explicit

Private Type LOGBRUSH
        lbStyle As Long
        lbColor As Long
        lbHatch As Long
End Type

Private Type CWPSTRUCT
        lParam As Long
        wParam As Long
        message As Long
        hwnd As Long
End Type

Private Type RECT
        Left As Long
        Top As Long
        Right As Long
        Bottom As Long
End Type

Private Declare Sub CopyMemory Lib "kernel32" Alias "RtlMoveMemory" (Destination As Any, Source As Any, ByVal Length 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 CallNextHookEx Lib "user32" (ByVal hHook As Long, ByVal nCode As Long, ByVal wParam As Long, lParam As Any) As Long
Private Declare Function UnhookWindowsHookEx Lib "user32" (ByVal hHook As Long) As Long
Private Declare Function SetWindowLong Lib "user32" Alias "SetWindowLongA" (ByVal hwnd As Long, ByVal nIndex As Long, ByVal dwNewLong As Long) As Long
Private Declare Function CallWindowProc Lib "user32" Alias "CallWindowProcA" (ByVal lpPrevWndFunc As Long, ByVal hwnd As Long, ByVal Msg 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 SetBkColor Lib "gdi32" (ByVal hdc As Long, ByVal crColor As Long) As Long
Private Declare Function SetTextColor Lib "gdi32" (ByVal hdc As Long, ByVal crColor As Long) As Long
Private Declare Function CreateBrushIndirect Lib "gdi32" (lpLogBrush As LOGBRUSH) As Long
Private Declare Function CreateFont Lib "gdi32" Alias "CreateFontA" (ByVal H As Long, ByVal W As Long, ByVal E As Long, ByVal O As Long, ByVal W As Long, ByVal I As Long, ByVal u As Long, ByVal S As Long, ByVal C As Long, ByVal OP As Long, ByVal CP As Long, ByVal Q As Long, ByVal PAF As Long, ByVal F As String) As Long
Private Declare Function SelectObject Lib "gdi32" (ByVal hdc As Long, ByVal hObject As Long) As Long
Private Declare Function SetWindowPos Lib "user32" (ByVal hwnd As Long, ByVal hWndInsertAfter As Long, ByVal x As Long, ByVal y As Long, ByVal cx As Long, ByVal cy As Long, ByVal wFlags As Long) As Long
Private Declare Function GetWindowRect Lib "user32" (ByVal hwnd As Long, lpRect As RECT) As Long
Private Declare Function GetSysColor Lib "user32" (ByVal nIndex 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

' System Color Constants
Private Const COLOR_BTNFACE = 15
Private Const COLOR_BTNTEXT = 18

' SetWindowPos Constants
Private Const SWP_FRAMECHANGED = &H20
Private Const SWP_NOSIZE = &H1
Private Const SWP_NOZORDER = &H4

Private Const WH_CALLWNDPROC = 4

Private Const GWL_WNDPROC = (-4)

' Windows Messages
Private Const WM_GETFONT = &H31
Private Const WM_CREATE = &H1
Private Const WM_CTLCOLORBTN = &H135
Private Const WM_CTLCOLORDLG = &H136
Private Const WM_CTLCOLORSTATIC = &H138
Private Const WM_CTLCOLOREDIT = &H133
Private Const WM_DESTROY = &H2
Private Const WM_SHOWWINDOW = &H18
Private Const WM_COMMAND = &H111

Private Const BN_CLICKED = 0
Private Const IDOK = 1

Private Const EM_SETPASSWORDCHAR = &HCC

' InputboxEx Variables
Private INPUTBOX_HOOK As Long
Private INPUTBOX_HWND As Long
Private INPUTBOX_PASSCHAR As String
Private INPUTBOX_BACKCOLOR As Long
Private INPUTBOX_FORECOLOR As Long
Private INPUTBOX_FONT As String
Private INPUTBOX_FONTSIZE As Integer
Private INPUTBOX_SHOWING As Boolean
Private INPUTBOX_CENTERV As Boolean
Private INPUTBOX_CENTERH As Boolean
Private INPUTBOX_OK As Boolean

Private Function InputBoxProc(ByVal hwnd As Long, ByVal Msg As Long, ByVal wParam As Long, ByVal lParam As Long) As Long
    Dim tLB As LOGBRUSH
    Dim lFont As Long
    Dim tRECT As RECT
    Dim lNotify As Long
    Dim lID As Long
    
    Select Case Msg
    Case WM_COMMAND
        'Check to see if the OK Button was Pressed..
        lNotify = Val("&H" & Left$(Right$("00000000" & Hex$(wParam), 8), 4))
        lID = Val("&H" & Right$(Right$("00000000" & Hex$(wParam), 8), 4))
        If lNotify = BN_CLICKED Then
            INPUTBOX_OK = (lID = IDOK)
        End If
        
    Case WM_SHOWWINDOW
        'Reposition Inputbox if Neccessary
        Call GetWindowRect(hwnd, tRECT)
        If INPUTBOX_CENTERH Then tRECT.Left = ((Screen.Width / Screen.TwipsPerPixelX) - (tRECT.Right - tRECT.Left)) / 2
        If INPUTBOX_CENTERV Then tRECT.Top = ((Screen.Height / Screen.TwipsPerPixelY) - (tRECT.Bottom - tRECT.Top)) / 2
        Call SetWindowPos(hwnd, 0, tRECT.Left, tRECT.Top, 0, 0, SWP_NOSIZE Or SWP_NOZORDER Or SWP_FRAMECHANGED)
        
    Case WM_CTLCOLORDLG, WM_CTLCOLORSTATIC, WM_CTLCOLORBTN, WM_CTLCOLOREDIT
        'Set the Colors
        If Msg = WM_CTLCOLOREDIT Then
            If Len(INPUTBOX_PASSCHAR) Then
                Call SendMessage(lParam, EM_SETPASSWORDCHAR, Asc(INPUTBOX_PASSCHAR), ByVal 0&)
            End If
        Else
            Call SetTextColor(wParam, INPUTBOX_FORECOLOR)
            Call SetBkColor(wParam, INPUTBOX_BACKCOLOR)
            If Msg = WM_CTLCOLORSTATIC Then
                'Set the Font
                lFont = CreateFont(-((INPUTBOX_FONTSIZE / 72) * 96), 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, INPUTBOX_FONT)
                Call SelectObject(wParam, lFont)
            End If
            'Create a Solid Brush using that Color
            tLB.lbColor = INPUTBOX_BACKCOLOR
            'Return the Handle to the Brush to Paint the Inputbox
            InputBoxProc = CreateBrushIndirect(tLB)
            Exit Function
        End If
        
    Case WM_DESTROY
        'Remove the Inputbox Subclassing
        Call SetWindowLong(hwnd, GWL_WNDPROC, INPUTBOX_HWND)
        
    End Select
    InputBoxProc = CallWindowProc(INPUTBOX_HWND, hwnd, Msg, wParam, ByVal lParam)
End Function

Private Function HookWindow(ByVal nCode As Long, ByVal wParam As Long, ByVal lParam As Long) As Long
    Dim tCWP As CWPSTRUCT
    Dim sClass As String
    'This is where you need to Hook the Inputbox
    CopyMemory tCWP, ByVal lParam, Len(tCWP)
    If tCWP.message = WM_CREATE Then
        sClass = Space(255)
        sClass = Left(sClass, GetClassName(tCWP.hwnd, ByVal sClass, 255))
        If sClass = "#32770" Then
            If INPUTBOX_SHOWING Then
                'Subclass the Inputbox as it's created
                INPUTBOX_HWND = SetWindowLong(tCWP.hwnd, GWL_WNDPROC, AddressOf InputBoxProc)
            End If
        End If
    End If
    HookWindow = CallNextHookEx(INPUTBOX_HOOK, nCode, wParam, ByVal lParam)
End Function

Public Function InputBoxEx(ByVal Prompt As String, Optional ByVal Title As String, Optional ByVal Default As String, Optional ByVal XPos As Single = -1, Optional ByVal YPos As Single = -1, Optional ByVal HelpFile As String, Optional ByVal Context As Long, Optional ByVal ForeColor As ColorConstants, Optional ByVal BackColor As ColorConstants, Optional ByVal FontName As String, Optional ByVal FontSize As Long, Optional ByVal PasswordChar As String, Optional ByVal CancelError As Boolean = False) As String
    'Set the Defaults
    If Len(Title) = 0 Then Title = App.Title
    INPUTBOX_FONT = "MS Sans Serif"
    INPUTBOX_FONTSIZE = 8
    INPUTBOX_FORECOLOR = GetSysColor(COLOR_BTNTEXT)
    INPUTBOX_BACKCOLOR = GetSysColor(COLOR_BTNFACE)
    INPUTBOX_CENTERH = (XPos = -1)
    INPUTBOX_CENTERV = (YPos = -1)
    INPUTBOX_PASSCHAR = PasswordChar
    'Set the Font and Colors
    If Len(FontName) Then INPUTBOX_FONT = FontName
    If FontSize > 0 Then INPUTBOX_FONTSIZE = FontSize
    If ForeColor > 0 Then INPUTBOX_FORECOLOR = ForeColor
    If BackColor > 0 Then INPUTBOX_BACKCOLOR = BackColor
    'Show the Modified Inputbox
    INPUTBOX_SHOWING = True
    'Monitor All Messages to this Thread.
    INPUTBOX_HOOK = SetWindowsHookEx(WH_CALLWNDPROC, AddressOf HookWindow, App.hInstance, App.ThreadID)
    InputBoxEx = InputBox(Prompt, Title, Default, XPos, YPos, HelpFile, Context)
    INPUTBOX_SHOWING = False
    'Remove the Hook
    Call UnhookWindowsHookEx(INPUTBOX_HOOK)
    If Not INPUTBOX_OK And CancelError Then Err.Raise vbObjectError + 1, , "User Pressed " & Chr(34) & "Cancel" & Chr(34)
End Function

Example Usage:

Code:

Private Sub cmdShowInputbox_Click()
    Dim sReturnVal As String

    sReturnVal = InputBoxEx("Some Message", "Some Caption", "Some Default Value", , , , , , , , , "*")
End Sub

**HeSaidJoe** · Jun 15th, 2000, 07:38 AM

'---bas module code--
Option Explicit

Public Declare Function FindWindow Lib "user32" Alias "FindWindowA" (ByVal lpClassName As String, ByVal lpWindowName As String) As Long

Public 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

Public Declare Function SetTimer& Lib "user32" (ByVal hwnd&, ByVal nIDEvent&, ByVal uElapse&, ByVal lpTimerFunc&)

Public Declare Function KillTimer& Lib "user32" (ByVal hwnd&, ByVal nIDEvent&)
Public Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long
Public Const NV_INPUTBOX As Long = &H5000&
Public Const EM_SETPASSWORDCHAR = &HCC
Public Sub TimerProc(ByVal hwnd&, ByVal uMsg&, ByVal idEvent&, ByVal dwTime&)
Dim myHwnd As Long
'Change here App.Title (defoult InputBox Caption) into your caption
myHwnd = FindWindowEx(FindWindow("#32770", App.Title), 0, "Edit", "")
Call SendMessage(myHwnd, EM_SETPASSWORDCHAR, 42, 0)
KillTimer hwnd, idEvent
End Sub

'--Using - form code:
Private Sub Command1_Click()
Dim sPass As String
SetTimer hwnd, NV_INPUTBOX, 10, AddressOf TimerProc
sPass = InputBox("Set Password")
End Sub

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