Option Compare Database
 
' 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 originally courtesy of:
' Microsoft Access 95 How-To
' Ken Getz and Paul Litwin
' Waite Group Press, 1996
' Revised to support multiple files:
' 28 December 2007
 
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
' 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.
    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 = ""
    End If
    If IsMissing(varTitleForDialog) Then
        varTitleForDialog = ""
    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, _
                "Excel File (*.xlsx)", "*.xlsx;*.xls")
 
    ' 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
    Forms!frm_File_Tools![Text3] = varFileName
End Function
Private Function TrimNull(ByVal strItem As String) As String
    Dim intPos As Integer
 
    intPos = InStr(strItem, vbNullChar)
    If intPos > 0 Then
        TrimNull = Left(strItem, intPos - 1)
    Else
        TrimNull = strItem
    End If
End Function
Private Function FixPath(ByVal path As String) As String
    If Right$(path, 1) <> "\" Then
        FixPath = path & "\"
    Else
        FixPath = path
    End If
End Function