(no subject)
- From: "Squall" <squallffxiii@xxxxxxx>
- To: wdmaudiodev@xxxxxxxxxxxxx
- Date: Wed, 12 Oct 2005 00:23:23 +0800
Hi,
I am now writing a Ring 3 application that will register KSEvent on my Ring 0
miniport driver such that it receives notification from driver when there's any
status change in the hardware. However i am seeing strange thing on my Ring 0
driver. Basically it receives my Event Enable call but not my Event Disable
call.
My Ring 3 Enable call is as follows:
bSuccess = DeviceIoControl(m_hDevHandle,
IOCTL_KS_ENABLE_EVENT,
&KsEvent,
sizeof(KSEVENT),
&KsEventData,
sizeof(KSEVENTDATA),
&dwReturn,
NULL);
and my disable call goes like this:
bSuccess = DeviceIoControl(m_hDevHandle,
IOCTL_KS_DISABLE_EVENT,
&KsEventData,
sizeof(KSEVENTDATA),
NULL,
0,
&dwReturn,
NULL);
where the KsEventData is the same as the one used in Event Enable.
For Disable event bSuccess returns me a FALSE with GetLastError() = 0x1F
(ERROR_GEN_FAILURE).
Can anyone shed a light on what's the problem here?
Thanks in advance!
Squall.
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