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
' 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
' This can be executed but it is not really in use in this database
' I was choosing how I would open thing and this really has more capabilities,
' for opening a single unique file only
' If used for dawn imports, you could always comment out additional entries,
' and or specify custom ones like recognizing *.are as txt below
Public Function RecallFileLocation() As String
Dim strFilter As String, strLoc As String
Dim lngFlags As Long, MyDefault As String
On Error GoTo HandleErr
strFilter = ahtAddFilterItem(strFilter, "Access Files (*.mda, *.mdb)", _
"*.MDA;*.MDB")
'strFilter = ahtAddFilterItem(strFilter, "dBASE Files (*.dbf)", "*.DBF")
'strFilter = ahtAddFilterItem(strFilter, "Text Files (*.txt)", "*.TXT")
'strFilter = ahtAddFilterItem(strFilter, "Excel Files (*.xls)", "*.XLS")
strFilter = ahtAddFilterItem(strFilter, "All Files (*.*)", "*.*")
'MyDefault = FindDefaults("DefaultOpenLocation")
MyDefault = Environ("USERPROFILE") & "\My Documents\"
' MsgBox ValidateLocations(MyDefault) Returns results of test to see if exists
RecallFileLocation = ahtCommonFileOpenSave(InitialDir:=MyDefault, _
Filter:=strFilter, FilterIndex:=3, flags:=lngFlags, _
DialogTitle:="Find File to Open!")
' MsgBox "You selected: " & ahtCommonFileOpenSave(InitialDir:="S:\Assignment List\", _
' Filter:=strFilter, FilterIndex:=3, Flags:=lngFlags, _
' DialogTitle:="Find File to Open!")
' Since you passed in a variable for lngFlags,
' the function places the output flags value in the variable.
'Debug.Print Hex(lngFlags)
'MsgBox RecallFileLocation
ExitHere:
Exit Function
' Error handling block added by Error Handler Add-In. DO NOT EDIT this block of code.
' Automatic error handler last updated at 11-12-2003 09:47:18 'ErrorHandler:$$D=11-12-2003 'ErrorHandler:$$T=09:47:18
HandleErr:
Select Case Err.Number
Case Else
MsgBox "Error " & Err.Number & ": " & Err.Description, vbCritical, "modUtility.RecallFileLocation" 'ErrorHandler:$$N=modUtility.RecallFileLocation
End Select
' End Error handling block.
End Function
Function GetOpenFile(Optional varDirectory As Variant, _
Optional varTitleForDialog As Variant) As Variant
' Here's an example that gets an Access database name.
Dim strFilter As String
Dim lngFlags As Long
Dim varFileName As Variant
On Error GoTo HandleErr
' Specify that the chosen file must already exist,
' don't change directories when you're done
' Also, don't bother displaying
' the read-only box. It'll only confuse people.
lngFlags = ahtOFN_FILEMUSTEXIST Or _
ahtOFN_HIDEREADONLY Or ahtOFN_NOCHANGEDIR
If IsMissing(varDirectory) Then
varDirectory = ""
End If
If IsMissing(varTitleForDialog) Then
varTitleForDialog = ""
End If
' Define the filter string and allocate space in the "c"
' string Duplicate this line with changes as necessary for
' more file templates.
strFilter = ahtAddFilterItem(strFilter, _
"Access (*.mdb)", "*.MDB;*.MDA")
' Now actually call to get the file name.
varFileName = ahtCommonFileOpenSave( _
OpenFile:=False, _
InitialDir:=varDirectory, _
Filter:=strFilter, _
flags:=lngFlags, _
DialogTitle:=varTitleForDialog)
MsgBox varFileName
If Not IsNull(varFileName) Then
varFileName = TrimNull(varFileName)
End If
GetOpenFile = varFileName
ExitHere:
Exit Function
' Error handling block added by Error Handler Add-In. DO NOT EDIT this block of code.
' Automatic error handler last updated at 11-12-2003 09:47:18 'ErrorHandler:$$D=11-12-2003 'ErrorHandler:$$T=09:47:18
HandleErr:
Select Case Err.Number
Case Else
MsgBox "Error " & Err.Number & ": " & Err.Description, vbCritical, "modUtility.GetOpenFile" 'ErrorHandler:$$N=modUtility.GetOpenFile
End Select
' End Error handling block.
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
' 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
On Error GoTo HandleErr
' 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
ExitHere:
Exit Function
' Error handling block added by Error Handler Add-In. DO NOT EDIT this block of code.
' Automatic error handler last updated at 11-12-2003 09:47:18 'ErrorHandler:$$D=11-12-2003 'ErrorHandler:$$T=09:47:18
HandleErr:
Select Case Err.Number
Case Else
MsgBox "Error " & Err.Number & ": " & Err.Description, vbCritical, "modUtility.ahtCommonFileOpenSave" 'ErrorHandler:$$N=modUtility.ahtCommonFileOpenSave
End Select
' End Error handling block.
End Function
Function ahtAddFilterItem(strFilter As String, _
strDescription As String, Optional varItem As Variant) As String
' Tack a new chunk onto the file filter.
' That is, take the old value, stick onto it the description,
' (like "Databases"), a null character, the skeleton
' (like "*.mdb;*.mda") and a final null character.
On Error GoTo HandleErr
If IsMissing(varItem) Then varItem = "*.*"
ahtAddFilterItem = strFilter & _
strDescription & vbNullChar & _
varItem & vbNullChar
ExitHere:
Exit Function
' Error handling block added by Error Handler Add-In. DO NOT EDIT this block of code.
' Automatic error handler last updated at 11-12-2003 09:47:18 'ErrorHandler:$$D=11-12-2003 'ErrorHandler:$$T=09:47:18
HandleErr:
Select Case Err.Number
Case Else
MsgBox "Error " & Err.Number & ": " & Err.Description, vbCritical, "modUtility.ahtAddFilterItem" 'ErrorHandler:$$N=modUtility.ahtAddFilterItem
End Select
' End Error handling block.
End Function
Private Function TrimNull(ByVal strItem As String) As String
Dim intPos As Integer
On Error GoTo HandleErr
intPos = InStr(strItem, vbNullChar)
If intPos > 0 Then
TrimNull = Left(strItem, intPos - 1)
Else
TrimNull = strItem
End If
ExitHere:
Exit Function
' Error handling block added by Error Handler Add-In. DO NOT EDIT this block of code.
' Automatic error handler last updated at 11-12-2003 09:47:18 'ErrorHandler:$$D=11-12-2003 'ErrorHandler:$$T=09:47:18
HandleErr:
Select Case Err.Number
Case Else
MsgBox "Error " & Err.Number & ": " & Err.Description, vbCritical, "modUtility.TrimNull" 'ErrorHandler:$$N=modUtility.TrimNull
End Select
' End Error handling block.
End Function
Public Function FindDefaults(ByVal MyDefaults As String) As String
Dim dbs As DAO.Database
Dim rst As DAO.Recordset
Set dbs = CurrentDb
Set rst = dbs.OpenRecordset("Select * from tblDefaults", dbOpenSnapshot)
With rst
.FindFirst "TypeOfDefault='" & MyDefaults & "'"
If !TypeOfDefault = MyDefaults Then
FindDefaults = !DefaultInfo
Else
MsgBox "Information Not Found"
End If
End With
Set rst = Nothing
Set dbs = Nothing
End Function
Public Function ValidateLocations(ByVal strLoc As String) As Boolean
Dim lngType As Long
ValidateLocations = Len(Dir(strLoc, lngType)) > 0
End Function
Function ObjectExists(ByVal strObjectType As String, _
ByVal strObjectName As String) As Boolean
Dim db As Database
Dim tbl As TableDef
Dim qry As QueryDef
Dim i As Integer
On Error GoTo HandleErr
Set db = CurrentDb()
ObjectExists = False
If strObjectType = "Table" Then
For Each tbl In db.TableDefs
If tbl.Name = strObjectName Then
ObjectExists = True
Exit Function
End If
Next tbl
ElseIf strObjectType = "Query" Then
For Each qry In db.QueryDefs
If qry.Name = strObjectName Then
ObjectExists = True
Exit Function
End If
Next qry
ElseIf strObjectType = "Form" Or strObjectType = "Report" Or strObjectType = "Module" Then
For i = 0 To db.Containers(strObjectType & "s").Documents.Count - 1
If db.Containers(strObjectType & "s").Documents(i).Name = strObjectName Then
ObjectExists = True
Exit Function
End If
Next i
ElseIf strObjectType = "Macro" Then
For i = 0 To db.Containers("Scripts").Documents.Count - 1
If db.Containers("Scripts").Documents(i).Name = strObjectName Then
ObjectExists = True
Exit Function
End If
Next i
Else
MsgBox "Invalid Object Type passed, must be Table, Query, Form, Report, Macro, or Module"
End If
ExitHere:
Exit Function
' Error handling block added by Error Handler Add-In. DO NOT EDIT this block of code.
' Automatic error handler last updated at 09-12-2003 15:54:41 'ErrorHandler:$$D=09-12-2003 'ErrorHandler:$$T=15:54:41
HandleErr:
Select Case Err.Number
Case Else
MsgBox "Error " & Err.Number & ": " & Err.Description, vbCritical, "ObjectExist.ObjectExists" 'ErrorHandler:$$N=ObjectExist.ObjectExists
End Select
' End Error handling block.
End Function
