DebugView Can't work at Vista?

Dear Sir:

I try to add below code to my driver source, and add sys to
vista.
But No Message output. What's wrong with me?
Please help me to solve it.

//----------------------------------------------------------------------------------------------------------------------//

ULONG DebugLevel = TRACE_LEVEL_INFORMATION;
ULONG DebugFlag = DBG_INIT|DBG_PNP|DBG_POWER|DBG_CREATE_CLOSE|
DBG_IOCTLS|DBG_WRITE|DBG_READ|DBG_DPC|DBG_INTERRUPT|DBG_HW_ACCESS;


VOID
SerialDbgPrintEx (
IN ULONG TraceEventsLevel,
IN ULONG TraceEventsFlag,
IN PCCHAR DebugMessage,
...
)

{

#if DBG

#define TEMP_BUFFER_SIZE 1024

va_list list;
CHAR debugMessageBuffer [TEMP_BUFFER_SIZE];
NTSTATUS status;

va_start(list, DebugMessage);

if (DebugMessage) {
status = RtlStringCbVPrintfA( debugMessageBuffer,
sizeof(debugMessageBuffer),
DebugMessage,
list );
if(!NT_SUCCESS(status)) {
KdPrint((_DRIVER_NAME_": RtlStringCbVPrintfA failed %x\n",
status));
return;
}
if (TraceEventsLevel < TRACE_LEVEL_INFORMATION ||
(TraceEventsLevel <= DebugLevel &&
((TraceEventsFlag & DebugFlag) == TraceEventsFlag))) {

KdPrint((debugMessageBuffer));
}
}
va_end(list);

return;

#else

UNREFERENCED_PARAMETER(TraceEventsLevel);
UNREFERENCED_PARAMETER(TraceEventsFlag);
UNREFERENCED_PARAMETER(DebugMessage);

#endif
}

and

I call
SerialDbgPrintEx(TRACE_LEVEL_INFORMATION, DBG_PNP, "-->
SerialEvtDeviceAdd\n");
but NO message shows on DebugView

 

You need to add a key named in HKLM\SYSTEM\CurrentControlSet\Control\Session
Manager named Debug Print Filter. In this key, add the following DWORD
value:

DEFAULT : REG_DWORD : 0xFFFFFFFF

Then, reboot the system. The key and DWORD value are case-sensitive.

Good luck!

 

Dear Peter:

It works well.
Thanks for your kindly help.