我这样用IoCreateSymbolicLink对吗？

NTSTATUS Wdm1AddDevice(IN PDRIVER_OBJECT DriverObject,  IN PDEVICE_OBJECT pdo)
{

DebugPrint(\"Add Device By MyDriver\");
 
NTSTATUS status;
PDEVICE_OBJECT fdo;
UNICODE_STRING DevName;

   status = IoCreateDevice (DriverObject,
sizeof(WDM1_DEVICE_EXTENSION),
NULL,
FILE_DEVICE_UNKNOWN,
0,
FALSE,
&fdo);
if( !NT_SUCCESS(status))
return status;

PWDM1_DEVICE_EXTENSION dx = (PWDM1_DEVICE_EXTENSION)fdo->DeviceExtension;
dx->fdo = fdo;

status = IoRegisterDeviceInterface(pdo, &WDM1_GUID, NULL, &dx->ifSymLinkName);
if( !NT_SUCCESS(status))
{
IoDeleteDevice(fdo);
return status;
}
IoSetDeviceInterfaceState(&dx->ifSymLinkName, TRUE);

    RtlInitUnicodeString(&DevName, L\"\\\\DosDevice\\\\SZMDev0\");

status = IoCreateSymbolicLink( &DevName, &dx->ifSymLinkName );

    if (NT_SUCCESS(status))
{              
        DebugPrint(\" ERROR! cannot creat a symboliclink name \");
}
else
DebugPrint(\"success create a symboliclink name\");

    DebugPrint(\"the devname is %T\",&DevName);

DebugPrint(\"ifSymbolicLinkName is %T\",&dx->ifSymLinkName);

dx->NextStackDevice = IoAttachDeviceToDeviceStack(fdo,pdo);

fdo->Flags |= DO_BUFFERED_IO|DO_POWER_PAGABLE;
fdo->Flags &= ~DO_DEVICE_INITIALIZING;

return STATUS_SUCCESS;
}

status = IoCreateSymbolicLink( &DevName, &dx->ifSymLinkName ); 运行结果status没有返回STATUS_SUCCESS。这是为什么呢？我这样用对吗？

  status = IoCreateDevice (DriverObject,
sizeof(WDM1_DEVICE_EXTENSION),
NULL,
FILE_DEVICE_UNKNOWN,
0,
FALSE,
&fdo);
－－－－－－－－－－－－－－没有device name？

    RtlInitUnicodeString(&DevName, L\"\\\\DosDevice\\\\SZMDev0\");
－－－－－－－－－－－－－－你这是device name？symbol link name吧？
RtlInitUnicodeString(&strDeviceName, L\"\\\\Device\\\\DeviceName\");
RtlInitUnicodeString(&strSymbName, L\"\\\\DosDevices\\\\SymbName\");//是DosDevices
  

status = IoCreateSymbolicLink( &DevName, &dx->ifSymLinkName );
－－－－－－－－－－－－－－第一个是symbol link name，第二个是device name

WDM不使用IOCREATESYMBOLICLINK. 符合WDM规范的DRIVER使用PNP MANAGER的IoRegisterDeviceInterface/IoSetDeviceInterfaceState来处理SYMBOLIC LINK.

感谢arthurtu的帮助，程序现在已经可以正常工作。主要原因在于我对有些概念的理解不对。表示感谢!
也感谢lu0老大的提示!我是初学，两种方法都想试试。以后肯定用你说的那种方法。

这对我们这些初学者很有提示