Argent: Run-time error '429': Activex Component Can't Create Object

Below is an example that I use to browse for files, its uses API. Copy and paste it all into a module of its own and read the instructions at the bottom on how to call it.



Option Compare Database
Option Explicit

'This code was originally written by Ken Getz.
'It is not to be altered or distributed,
'except as part of an application.
'You are free to use it in any application,
'provided the copyright notice is left unchanged.
'
' Code courtesy of:
'   Microsoft Access 95 How-To
' Ken Getz and Paul Litwin
' Waite Group Press, 1996

Type tagOPENFILENAME
     lStructSize As Long
     hwndOwner As Long
     hInstance As Long
     strFilter As String
     strCustomFilter As String
     nMaxCustFilter As Long
     nFilterIndex As Long
     strFile As String
     nMaxFile As Long
     strFileTitle As String
     nMaxFileTitle As Long
     strInitialDir As String
     strTitle As String
     Flags As Long
     nFileOffset As Integer
     nFileExtension As Integer
     strDefExt As String
     lCustData As Long
     lpfnHook As Long
     lpTemplateName As String
End Type
Declare Function aht_apiGetOpenFileName Lib "comdlg32.dll" _
   Alias "GetOpenFileNameA" (OFN As tagOPENFILENAME) As Boolean
Declare Function aht_apiGetSaveFileName Lib "comdlg32.dll" _
   Alias "GetSaveFileNameA" (OFN As tagOPENFILENAME) As Boolean
Declare Function CommDlgExtendedError Lib "comdlg32.dll" () As Long
Global Const ahtOFN_READONLY = &H1
Global Const ahtOFN_OVERWRITEPROMPT = &H2
Global Const ahtOFN_HIDEREADONLY = &H4
Global Const ahtOFN_NOCHANGEDIR = &H8
Global Const ahtOFN_SHOWHELP = &H10
Global FileNameIs As String
' You won't use these.
'Global Const ahtOFN_ENABLEHOOK = &H20
'Global Const ahtOFN_ENABLETEMPLATE = &H40
'Global Const ahtOFN_ENABLETEMPLATEHANDLE = &H80
Global Const ahtOFN_NOVALIDATE = &H100
Global Const ahtOFN_ALLOWMULTISELECT = &H200
Global Const ahtOFN_EXTENSIONDIFFERENT = &H400
Global Const ahtOFN_PATHMUSTEXIST = &H800
Global Const ahtOFN_FILEMUSTEXIST = &H1000
Global Const ahtOFN_CREATEPROMPT = &H2000
Global Const ahtOFN_SHAREAWARE = &H4000
Global Const ahtOFN_NOREADONLYRETURN = &H8000
Global Const ahtOFN_NOTESTFILECREATE = &H10000
Global Const ahtOFN_NONETWORKBUTTON = &H20000
Global Const ahtOFN_NOLONGNAMES = &H40000
' New for Windows 95
Global Const ahtOFN_EXPLORER = &H80000
Global Const ahtOFN_NODEREFERENCELINKS = &H100000
Global Const ahtOFN_LONGNAMES = &H200000

Function GetOpenFile(Optional varDirectory As Variant, _
   Optional varTitleForDialog As Variant) As Variant
' Here's an example that gets an Access database name.
On Error GoTo err_stop
Dim strFilter As String
Dim lngFlags As Long
Dim varFileName As Variant
' Specify that the chosen file must already exist,
' don't change directories when you're done
' Also, don't bother displaying
' the read-only box. It'll only confuse people.
   lngFlags = ahtOFN_FILEMUSTEXIST Or _
               ahtOFN_HIDEREADONLY Or ahtOFN_NOCHANGEDIR
   If IsMissing(varDirectory) Then
       varDirectory = "F:\GROUPS\Operations"
   End If
   If IsMissing(varTitleForDialog) Then
       varTitleForDialog = "Select a raw data file for T060 database"
   End If

   ' Define the filter string and allocate space in the "c"
   ' string Duplicate this line with changes as necessary for
   ' more file templates.
   strFilter = ahtAddFilterItem(strFilter, _
               "Access (*.mdb)", "*.MDB;*.MDA")
   ' Now actually call to get the file name.
   varFileName = ahtCommonFileOpenSave( _
                   OpenFile:=True, _
                   InitialDir:=varDirectory, _
                   Filter:=strFilter, _
                   Flags:=lngFlags, _
                   DialogTitle:=varTitleForDialog)
   If Not IsNull(varFileName) Then
       varFileName = TrimNull(varFileName)
   End If
   GetOpenFile = varFileName
err_stop:
   
End Function
Function ahtCommonFileOpenSave( _
           Optional ByRef Flags As Variant, _
           Optional ByVal InitialDir As Variant, _
           Optional ByVal Filter As Variant, _
           Optional ByVal FilterIndex As Variant, _
           Optional ByVal DefaultExt As Variant, _
           Optional ByVal FileName As Variant, _
           Optional ByVal DialogTitle As Variant, _
           Optional ByVal hwnd As Variant, _
           Optional ByVal OpenFile As Variant) As Variant
           On Error GoTo err_stop
' This is the entry point you'll use to call the common
' file open/save dialog. The parameters are listed
' below, and all are optional.
'
' In:
' Flags: one or more of the ahtOFN_* constants, OR'd together.
' InitialDir: the directory in which to first look
' Filter: a set of file filters, set up by calling
' AddFilterItem. See examples.
' FilterIndex: 1-based integer indicating which filter
' set to use, by default (1 if unspecified)
' DefaultExt: Extension to use if the user doesn't enter one.
' Only useful on file saves.
' FileName: Default value for the file name text box.
' DialogTitle: Title for the dialog.
' hWnd: parent window handle
' OpenFile: Boolean(True=Open File/False=Save As)
' Out:
' Return Value: Either Null or the selected filename
Dim OFN As tagOPENFILENAME
Dim strFileName As String
Dim strFileTitle As String
Dim fResult As Boolean
   ' Give the dialog a caption title.
   If IsMissing(InitialDir) Then InitialDir = CurDir
   If IsMissing(Filter) Then Filter = ""
   If IsMissing(FilterIndex) Then FilterIndex = 1
   If IsMissing(Flags) Then Flags = 0&
   If IsMissing(DefaultExt) Then DefaultExt = ""
   If IsMissing(FileName) Then FileName = ""
   If IsMissing(DialogTitle) Then DialogTitle = ""
   If IsMissing(hwnd) Then hwnd = Application.hWndAccessApp
   If IsMissing(OpenFile) Then OpenFile = True
   ' Allocate string space for the returned strings.
   strFileName = Left(FileName & String(256, 0), 256)
   strFileTitle = String(256, 0)
   ' Set up the data structure before you call the function
   With OFN
       .lStructSize = Len(OFN)
       .hwndOwner = hwnd
       .strFilter = Filter
       .nFilterIndex = FilterIndex
       .strFile = strFileName
       .nMaxFile = Len(strFileName)
       .strFileTitle = strFileTitle
       .nMaxFileTitle = Len(strFileTitle)
       .strTitle = DialogTitle
       .Flags = Flags
       .strDefExt = DefaultExt
       .strInitialDir = InitialDir
       ' Didn't think most people would want to deal with
       ' these options.
       .hInstance = 0
       .strCustomFilter = ""
       .nMaxCustFilter = 0
       .lpfnHook = 0
       'New for NT 4.0
       .strCustomFilter = String(255, 0)
       .nMaxCustFilter = 255
   End With
   ' This will pass the desired data structure to the
   ' Windows API, which will in turn it uses to display
   ' the Open/Save As Dialog.
   If OpenFile Then
       fResult = aht_apiGetOpenFileName(OFN)
   Else
       fResult = aht_apiGetSaveFileName(OFN)
   End If

   ' The function call filled in the strFileTitle member
   ' of the structure. You'll have to write special code
   ' to retrieve that if you're interested.
   If fResult Then
       ' You might care to check the Flags member of the
       ' structure to get information about the chosen file.
       ' In this example, if you bothered to pass in a
       ' value for Flags, we'll fill it in with the outgoing
       ' Flags value.
       If Not IsMissing(Flags) Then Flags = OFN.Flags
       ahtCommonFileOpenSave = TrimNull(OFN.strFile)
   Else
       ahtCommonFileOpenSave = vbNullString
   End If
err_stop:
End Function

Function ahtAddFilterItem(strFilter As String, _
   strDescription As String, Optional varItem As Variant) As String
' Tack a new chunk onto the file filter.
' That is, take the old value, stick onto it the description,
' (like "Databases"), a null character, the skeleton
' (like "*.mdb;*.mda") and a final null character.
On Error GoTo err_stop
   If IsMissing(varItem) Then varItem = "*.*"
   ahtAddFilterItem = strFilter & _
               strDescription & vbNullChar & _
               varItem & vbNullChar
err_stop:
End Function
Private Function TrimNull(ByVal strItem As String) As String
On Error GoTo err_stop
Dim intPos As Integer
   intPos = InStr(strItem, vbNullChar)
   If intPos > 0 Then
       TrimNull = Left(strItem, intPos - 1)
   Else
       TrimNull = strItem
   End If
   FileNameIs = TrimNull
err_stop:
End Function
'************** Code End *****************
'To call the actual dialog from your code, see the enclosed function TestIt() within the module or use
'the following example as a guideline and

'Dim strFilter As String
'Dim strInputFileName As String

'strFilter = ahtAddFilterItem(strFilter, "Excel Files (*.XLS)", "*.XLS")
'strInputFileName = ahtCommonFileOpenSave(Filter:=strFilter, OpenFile:=True, _
'               DialogTitle:="Please select an input file...", _
'               Flags:=ahtOFN_HIDEREADONLY)

'Note that in order to call the Save As dialog box, you can use the same wrapper function by just setting
'the OpenFile option as False. For example,


'Ask for SaveFileName
'strFilter = ahtAddFilterItem(myStrFilter, "Excel Files (*.xls)", "*.xls")
'strSaveFileName = ahtCommonFileOpenSave(OpenFile:=False, Filter:=strFilter, _
 '                  Flags:=ahtOFN_OVERWRITEPROMPT Or ahtOFN_READONLY)

Hi xSinbad,

So your suggestion is using the API rather that then OCX. Good suggestion.

But can you tell me how to solve my problem above? Thanks.

Donno :(

Hi xSinbad,

That article is helpful and the points is yours.

BTW, Can you tell me why register an OCX to system32 folder is not working? Thanks.

> Thanks weesiong too for your emphasis.

ryancys I could not say for sure, some of the things Win2K do just dont make sense. I personally use the API option opposed to the activeX.

ok, please be patient to let some other experts to post their comments..

Hi xSinbad, thanks for your help.