I am trying to mask key via a keyboard filter driver and it works great with a usb keyboard but when I tried with ps2 and I execute the code below, when maskkey is true, I noticed that the KbFilter_ServiceCallback just continues to be called and I get no other key presses. To drop a key press, is it insufficient to just not call the next filter in the chain or is there a cleaner way to do this?
Should I call the chain with start/end set to a null or something of the sort to possible signal that the key was handled?
If you want to throw away a key press you need to set
*InputDataConsumed = number of packets thrown away;
Apparently there is a bug in the kbdhid stack that doesn’t look at the result of InputDataConsumed when the callback returns
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From: xxxxx@gmail.commailto:xxxxx Sent: ?12/?18/?2012 2:34 PM To: Windows System Software Devs Interest Listmailto:xxxxx Subject: [ntdev] kbfilter mask keys
I am trying to mask key via a keyboard filter driver and it works great with a usb keyboard but when I tried with ps2 and I execute the code below, when maskkey is true, I noticed that the KbFilter_ServiceCallback just continues to be called and I get no other key presses. To drop a key press, is it insufficient to just not call the next filter in the chain or is there a cleaner way to do this?
Should I call the chain with start/end set to a null or something of the sort to possible signal that the key was handled?
