CreateFile()在Windows XP中工作,但在Windows 7中失败,返回句柄无效

尝试使用CreateFile()创建处理程序时,即使以管理员身份执行应用程序,我也会收到以下错误消息:系统找不到指定的文件。(HRESULT异常:0x80070002)“:无。

下面是用于此任务的代码示例:

Private Enum EFileAccess As System.Int32
        GENERIC_WRITE = &H40000000
End Enum

Friend Enum EFileShare        
    FILE_SHARE_READ = &H1
    FILE_SHARE_WRITE = &H2
End Enum

Friend Enum ECreationDisposition        
    OPEN_EXISTING = 3
End Enum

Friend Enum EFileAttributes
   FILE_FLAG_NO_BUFFERING = &H20000000
End Enum

<DllImport("kernel32.dll", SetLastError:=True, CharSet:=System.Runtime.InteropServices.CharSet.Auto)> _
    Private Shared Function CreateFile(ByVal lpFileName As String, _
                                ByVal dwDesiredAccess As EFileAccess, _
                                ByVal dwShareMode As EFileShare, _
                                ByVal lpSecurityAttributes As IntPtr, _
                                ByVal dwCreationDisposition As ECreationDisposition, _
                                ByVal dwFlagsAndAttributes As EFileAttributes, _
                                ByVal hTemplateFile As IntPtr) As Microsoft.Win32.SafeHandles.SafeFileHandle
    End Function

路径指向Windows Server 2003中的矩阵打印机。

handle = CreateFile(\\brbhzpc001154\Epson_2180,
                                EFileAccess.GENERIC_WRITE,
                                EFileShare.FILE_SHARE_READ Or EFileShare.FILE_SHARE_WRITE,
                                IntPtr.Zero,
                                ECreationDisposition.OPEN_EXISTING,
                                EFileAttributes.FILE_FLAG_NO_BUFFERING,
                                IntPtr.Zero)

此应用程序在Windows XP中编译时不会出现任何错误,但当尝试在Windows 7中执行时,总会出现上述错误。