Combining flags

[TheVader]

Hi,

Sorry for the stupidity of the question, but I'm really stuck. I want to combine two flags in a BrowseInfo structure that is used with the SHBrowseForFolder API.

dlgBrowse.ulFlags = BIF_NEWDIALOGSTYLE [b]And[/b] BIF_RETURNONLYFSDIRS

Independently they work, but together they don't. I've tried 'And', 'Or', +, and &, but I can't get it to work. How can I combine those flags?

Thanks.

[Megatron]

Or combines flags.

Perhaps the two flags are not allowed to co-exist?

Can you post your code for this routine?

[TheVader]

Is it Or? That's odd, it doesn't seem to work.

Here is the routine I use to call the BrowseForFolder dialog. The BIF_NEWDIALOGSTYLE gives the dialog a modern look, with mouseover effects etc. The BIF_RETURNONLYFSDIRS flag makes sure the user can only select directories (so not My Computer e.g.). Independently they work, together they don't... thanks for the help.

'Form method:
Private Sub BrowseFolder()
'Displays BrowseForFolder dialog
Dim dlgBrowse As BrowseInfo
Dim strPath As String
Dim lngResult As Long
 
dlgBrowse.hwndOwner = Me.hWnd
dlgBrowse.lpszTitle = lstrcat("Selecteer de map waarin u uw documenten wilt opslaan.", "")
dlgBrowse.ulFlags = BIF_NEWDIALOGSTYLE Or BIF_RETURNONLYFSDIRS
 
lngResult = SHBrowseForFolder(dlgBrowse)
 
If lngResult <> 0 Then
    strPath = String$(MAX_PATH, 0)
    SHGetPathFromIDList lngResult, strPath
    CoTaskMemFree lngResult
        
    If InStr(strPath, vbNullChar) <> 0 Then
        strPath = Left$(strPath, InStr(strPath, vbNullChar) - 1)
    End If
    
    lblSave.Caption = strPath
End If
End Sub

'Module declarations:
Public Declare Function lstrcat Lib "kernel32" Alias "lstrcatA" (ByVal lpString1 As String, ByVal lpString2 As String) As Long
Public Declare Sub CoTaskMemFree Lib "ole32.dll" (ByVal hMem As Long)
Public Declare Function SHBrowseForFolder Lib "shell32" (lpbi As BrowseInfo) As Long
Public Declare Function SHGetPathFromIDList Lib "shell32" (ByVal pidList As Long, ByVal lpBuffer As String) As Long
 
Public Type BrowseInfo
    hwndOwner As Long
    pIDLRoot As Long
    pszDisplayName As Long
    lpszTitle As Long
    ulFlags As Long
    lpfnCallback As Long
    lParam As Long
    iImage As Long
End Type
 
Public Const BIF_RETURNONLYFSDIRS = 1
Public Const MAX_PATH = 260
Public Const BIF_NEWDIALOGSTYLE = &H40
Public Const BIF_STATUSTEXT = &H4
Public Const BIF_EDITBOX = &H10
Public Const BIF_UAHINT = &H100

[Megatron]

Tried it; doesn't look like you can.

As a word around, you could validate the the return value (If Len(strPath) = 0 Then...)

You could also look into custom filters. More info about these can be found Here

[TheVader]

It's strange. I've decided to check the return value as you suggested.

Thanks for your help.