Option Compare Database
Option Explicit
' Declarations for Windows Common Dialogs procedures
Private Type CLTAPI_OPENFILE
strFilter As String ' Filter string
intFilterIndex As Long ' Initial Filter to display.
strInitialDir As String ' Initial directory for the dialog to open in.
strInitialFile As String ' Initial file name to populate the dialog with.
strDialogTitle As String ' Dialog title
strDefaultExtension As String ' Default extension to append to file if user didn't specify one.
lngFlags As Long ' Flags (see constant list) to be used.
strFullPathReturned As String ' Full path of file picked.
strFileNameReturned As String ' File name of file picked.
intFileOffset As Integer ' Offset in full path (strFullPathReturned) where the file name (strFileNameReturned) begins.
intFileExtension As Integer ' Offset in full path (strFullPathReturned) where the file extension begins.
End Type
Const ALLFILES = "All Files"
Private Type CLTAPI_WINOPENFILENAME
lStructSize As Long
hwndOwner As LongPtr
hInstance As LongPtr
lpstrFilter As String
lpstrCustomFilter As String
nMaxCustFilter As Long
nFilterIndex As Long
lpstrFile As String
nMaxFile As Long
lpstrFileTitle As String
nMaxFileTitle As Long
lpstrInitialDir As String
lpstrTitle As String
flags As Long
nFileOffset As Integer
nFileExtension As Integer
lpstrDefExt As String
lCustData As LongPtr
lpfnHook As LongPtr
lpTemplateName As String
pvReserved As LongPtr
dwReserved As Long
FlagsEx As Long
End Type
Const OFN_ALLOWMULTISELECT = &H200
Const OFN_CREATEPROMPT = &H2000
Const OFN_EXPLORER = &H80000
Const OFN_FILEMUSTEXIST = &H1000
Const OFN_HIDEREADONLY = &H4
Const OFN_NOCHANGEDIR = &H8
Const OFN_NODEREFERENCELINKS = &H100000
Const OFN_NONETWORKBUTTON = &H20000
Const OFN_NOREADONLYRETURN = &H8000
Const OFN_NOVALIDATE = &H100
Const OFN_OVERWRITEPROMPT = &H2
Const OFN_PATHMUSTEXIST = &H800
Const OFN_READONLY = &H1
Const OFN_SHOWHELP = &H10
Declare PtrSafe Function CLTAPI_GetOpenFileName Lib "comdlg32.dll" Alias "GetOpenFileNameA" _
(pOpenfilename As CLTAPI_WINOPENFILENAME) _
As Boolean
Declare PtrSafe Function CLTAPI_GetSaveFileName Lib "comdlg32.dll" Alias "GetSaveFileNameA" _
(pOpenfilename As CLTAPI_WINOPENFILENAME) _
As Boolean
Function GetOpenFile_CLT(strInitialDir As String, strTitle As String) As String
' Comments : Simple file open routine. For additional options, use GetFileOpenEX_CLT()
' Parameters: strInitialDir - path for the initial directory, or blank for the current directory
' strTitle - title for the dialog
' Returns : string path, name and extension of the file selected
'
Dim fOK As Boolean
Dim typWinOpen As CLTAPI_WINOPENFILENAME
Dim typOpenFile As CLTAPI_OPENFILE
Dim strFilter As String
On Error GoTo PROC_ERR
' Set defaults for the structure
strFilter = CreateFilterString_CLT("All Files (*.*)", "*.*", "Database Files (*.MDB)", "*.MDB")
If strInitialDir <> "" Then
typOpenFile.strInitialDir = strInitialDir
Else
typOpenFile.strInitialDir = CurDir()
End If
If strTitle <> "" Then
typOpenFile.strDialogTitle = strTitle
End If
typOpenFile.strFilter = strFilter
typOpenFile.lngFlags = OFN_HIDEREADONLY Or OFN_SHOWHELP
' Convert the CLT structure to a Win structure
ConvertCLT2Win typOpenFile, typWinOpen
' Call the Common dialog
fOK = CLTAPI_GetOpenFileName(typWinOpen)
' Convert the Win structure back to a CLT structure
ConvertWin2CLT typWinOpen, typOpenFile
GetOpenFile_CLT = typOpenFile.strFullPathReturned
PROC_EXIT:
Exit Function
PROC_ERR:
GetOpenFile_CLT = ""
Resume PROC_EXIT
End Function
Sub ConvertCLT2Win(CLT_Struct As CLTAPI_OPENFILE, Win_Struct As CLTAPI_WINOPENFILENAME)
' Comments : Converts the passed CLTAPI structure to a Windows structure
' Parameters: CLT_Struct - record of type CLTAPI_OPENFILE
' Win_Struct - record of type CLTAPI_WINOPENFILENAME
' Returns : Nothing
'
Dim strFile As String * 512
On Error GoTo PROC_ERR
Win_Struct.hwndOwner = Application.hWndAccessApp
Win_Struct.hInstance = 0
If CLT_Struct.strFilter = "" Then
Win_Struct.lpstrFilter = ALLFILES & Chr$(0) & "*.*" & Chr$(0)
Else
Win_Struct.lpstrFilter = CLT_Struct.strFilter
End If
Win_Struct.nFilterIndex = CLT_Struct.intFilterIndex
Win_Struct.lpstrFile = String(512, 0)
Win_Struct.nMaxFile = 511
Win_Struct.lpstrFileTitle = String$(512, 0)
Win_Struct.nMaxFileTitle = 511
Win_Struct.lpstrTitle = CLT_Struct.strDialogTitle
Win_Struct.lpstrInitialDir = CLT_Struct.strInitialDir
Win_Struct.lpstrDefExt = CLT_Struct.strDefaultExtension
Win_Struct.flags = CLT_Struct.lngFlags
Win_Struct.lStructSize = LenB(Win_Struct)
PROC_EXIT:
Exit Sub
PROC_ERR:
Resume PROC_EXIT
End Sub
Sub ConvertWin2CLT(Win_Struct As CLTAPI_WINOPENFILENAME, CLT_Struct As CLTAPI_OPENFILE)
' Comments : Converts the passed CLTAPI structure to a Windows structure
' Parameters: Win_Struct - record of type CLTAPI_WINOPENFILENAME
' CLT_Struct - record of type CLTAPI_OPENFILE
' Returns : Nothing
'
On Error GoTo PROC_ERR
CLT_Struct.strFullPathReturned = Left(Win_Struct.lpstrFile, InStr(Win_Struct.lpstrFile, vbNullChar) - 1)
CLT_Struct.strFileNameReturned = RemoveNulls_CLT(Win_Struct.lpstrFileTitle)
CLT_Struct.intFileOffset = Win_Struct.nFileOffset
CLT_Struct.intFileExtension = Win_Struct.nFileExtension
PROC_EXIT:
Exit Sub
PROC_ERR:
Resume PROC_EXIT
End Sub
Function CreateFilterString_CLT(ParamArray varFilt() As Variant) As String
' Comments : Builds a Windows formatted filter string for "file type"
' Parameters: varFilter - parameter array in the format:
' Text, Filter, Text, Filter ...
' Such as:
' "All Files (*.*)", "*.*", "Text Files (*.TXT)", "*.TXT"
' Returns : windows formatted filter string
'
Dim strFilter As String
Dim intCounter As Integer
Dim intParamCount As Integer
On Error GoTo PROC_ERR
' Get the count of paramaters passed to the function
intParamCount = UBound(varFilt)
If (intParamCount <> -1) Then
' Count through each parameter
For intCounter = 0 To intParamCount
strFilter = strFilter & varFilt(intCounter) & Chr$(0)
Next
' Check for an even number of parameters
If (intParamCount Mod 2) = 0 Then
strFilter = strFilter & "*.*" & Chr$(0)
End If
End If
CreateFilterString_CLT = strFilter
PROC_EXIT:
Exit Function
PROC_ERR:
CreateFilterString_CLT = ""
Resume PROC_EXIT
End Function
Function RemoveNulls_CLT(strIn As String) As String
' Comments : Removes terminator from a string
' Parameters: strIn - string to modify
' Return : modified string
'
Dim intChr As Integer
intChr = InStr(strIn, Chr$(0))
If intChr > 0 Then
RemoveNulls_CLT = Left$(strIn, intChr - 1)
Else
RemoveNulls_CLT = strIn
End If
End Function
