把文件放在哪里以分享文件？

Question

我的VB6应用程序试图在C:\ProgramData\文件夹中写入一个文件。我这样做的原因是让计算机上的用户可以使用我的应用程序在同一个文件上写入，而且我知道ProgramData文件夹可以存储应用程序数据，供所有用户共享。

因此，

C:\Users\[UserName]\AppData\Local
C:\Users\[UserName]\AppData\LocalLow
C:\Users\[UserName]\AppData\Roaming

这些具有特定用户名的路径将不适合我的应用程序。

但是，如果我在Windows 7中以标准用户的身份运行，我发现我无权在ProgramData文件夹中的文件上写入。我还有别的办法可以完成这个任务吗？

Answer 1

您确实应该使用SHGetSpecialFolderPath() API。

将其放入模块(或表单并将其更改为私有)：

Private Declare Function SHGetSpecialFolderPath Lib "SHELL32.DLL" Alias "SHGetSpecialFolderPathA" (ByVal hwndOwner As Long, ByVal pszPath As String, ByVal nFolder As Long, ByVal fCreate As Long) As Long

Public Function GetSpecialFolder(ByVal csidl As Long) As String
    Dim X As Long
    GetSpecialFolder = Space$(261&)
    If SHGetSpecialFolderPath(0&, GetSpecialFolder, csidl, 1&) Then
        GetSpecialFolder = Left$(GetSpecialFolder, InStr(1&, GetSpecialFolder, vbNullChar, vbBinaryCompare) - 1&)
    Else
        Err.Raise -1&, , "Could not find special folder " & csidl & "."
    End If
End Function

然后，您可以使用这里的任何定义调用这个GetSpecialFolder()：

http://msdn.microsoft.com/en-us/library/windows/desktop/bb762494%28v=vs.85%29.aspx

这确保了它与每个操作系统兼容。要获得每个定义的值，只需在Google上查找或检查Win32 API工具即可。这里有一堆：

Public Const CSIDL_DESKTOP As Long = &H0
Public Const CSIDL_INTERNET As Long = &H1
Public Const CSIDL_PROGRAMS As Long = &H2
Public Const CSIDL_CONTROLS As Long = &H3
Public Const CSIDL_PRINTERS As Long = &H4
Public Const CSIDL_PERSONAL As Long = &H5
Public Const CSIDL_FAVORITES As Long = &H6
Public Const CSIDL_STARTUP As Long = &H7
Public Const CSIDL_RECENT As Long = &H8
Public Const CSIDL_SENDTO As Long = &H9
Public Const CSIDL_BITBUCKET As Long = &HA
Public Const CSIDL_STARTMENU As Long = &HB
Public Const CSIDL_MYDOCUMENTS As Long = &HC
Public Const CSIDL_MYMUSIC As Long = &HD
Public Const CSIDL_MYVIDEO As Long = &HE
Public Const CSIDL_UNUSED1 As Long = &HF '&HF not currently implemented
Public Const CSIDL_DESKTOPDIRECTORY As Long = &H10
Public Const CSIDL_DRIVES As Long = &H11
Public Const CSIDL_NETWORK As Long = &H12
Public Const CSIDL_NETHOOD As Long = &H13
Public Const CSIDL_FONTS As Long = &H14
Public Const CSIDL_TEMPLATES As Long = &H15
Public Const CSIDL_COMMON_STARTMENU As Long = &H16
Public Const CSIDL_COMMON_PROGRAMS As Long = &H17
Public Const CSIDL_COMMON_STARTUP As Long = &H18
Public Const CSIDL_COMMON_DESKTOPDIRECTORY As Long = &H19
Public Const CSIDL_APPDATA As Long = &H1A
Public Const CSIDL_PRINTHOOD As Long = &H1B
Public Const CSIDL_LOCAL_APPDATA As Long = &H1C
Public Const CSIDL_ALTSTARTUP As Long = &H1D
Public Const CSIDL_COMMON_ALTSTARTUP As Long = &H1E
Public Const CSIDL_COMMON_FAVORITES As Long = &H1F
Public Const CSIDL_INTERNET_CACHE As Long = &H20
Public Const CSIDL_COOKIES As Long = &H21
Public Const CSIDL_HISTORY As Long = &H22
Public Const CSIDL_COMMON_APPDATA As Long = &H23
Public Const CSIDL_WINDOWS As Long = &H24
Public Const CSIDL_SYSTEM As Long = &H25
Public Const CSIDL_PROGRAM_FILES As Long = &H26
Public Const CSIDL_MYPICTURES As Long = &H27
Public Const CSIDL_PROFILE As Long = &H28
Public Const CSIDL_SYSTEMX86 As Long = &H29 'RISC only
Public Const CSIDL_PROGRAM_FILESX86 As Long = &H2A 'RISC only
Public Const CSIDL_PROGRAM_FILES_COMMON As Long = &H2B
Public Const CSIDL_PROGRAM_FILES_COMMONX86 As Long = &H2C 'RISC only
Public Const CSIDL_COMMON_TEMPLATES As Long = &H2D
Public Const CSIDL_COMMON_DOCUMENTS As Long = &H2E
Public Const CSIDL_COMMON_ADMINTOOLS As Long = &H2F
Public Const CSIDL_ADMINTOOLS As Long = &H30
Public Const CSIDL_CONNECTIONS As Long = &H31
Public Const CSIDL_COMMON_MUSIC As Long = &H35
Public Const CSIDL_COMMON_PICTURES As Long = &H36
Public Const CSIDL_COMMON_VIDEO As Long = &H37
Public Const CSIDL_RESOURCES As Long = &H38
Public Const CSIDL_RESOURCES_LOCALIZED As Long = &H39
Public Const CSIDL_COMMON_OEM_LINKS As Long = &H3A
Public Const CSIDL_CDBURN_AREA As Long = &H3B
Public Const CSIDL_UNUSED2 As Long = &H3C '&H3C not currently implemented
Public Const CSIDL_COMPUTERSNEARME As Long = &H3D

你可能想要CSIDL_APPDATA或CSIDL_COMMON_APPDATA。

Answer 2

以下路径既可供所有用户使用，也可写入，即使没有任何特殊权限：

C:\Users\Public