Where have you been?!

Well, as you could probably guess, I haven’t had much to say for a while for a couple of reasons – first and foremost, the Windows 8 product cycle was really intense.  A lot of changes under the hood came down the pipe, so with the big additions to WDF (UMDF especially) we really had a ton of work to do!  Secondly I really couldn’t talk…


You’ve had the time, let’s hear the feedback.

I hope those of you who are using the new Visual Studio 2011 with the WDK integration are having some fun, even if it’s just been wandering around and playing.  What, if anything, are you not liking about it?  Anything that’s unintuitive or confusing?  What do you like about it, but would like to maybe…

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Well, you can kind of see why we’ve been quiet around here…

  If you’re watching what’s going on at //BUILD (and why wouldn’t you be?), you may have seen that UMDF now supports hardware access (via ports and registers) and interrupt handling!  If you haven’t seen it, you can go read more here. And the other big one.  Something I’ve been begging to get done for…

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How active are you?

Was pondering a few questions the last few days. How many of you UMDF writers use ATL in your drivers? If you do, do you have more of a kernel driver background or a user mode background? Since UMDF works on an object model very similar to COM, the ATL does provide a lot of…

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Time keeps on slippin’

Greetings one and all!  Been heads down on some work around here and haven’t been able to post an update in a while. A couple of real good case studies have come up recently with regards to driver stability and effective testing of those drivers.  So I want to call out some processes we’ve been…


A funny thing happened on the way to the keyboard

So as I was crafting some UMDF HID driver code for your consumption, and I was working with one of you (and you know who you are *g*) during some of that time frame, we sort of discovered everything already exists between my earlier blog posts and some of the WDK samples.  So rather than…

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0 and 1 are not just numbers, they’re spaces!

Again, thanks to our intrepid explorer Ilia S. for helping uncover some more traps in the UMDF HID Collection Filter journey. Two things to keep in mind as you’re creating your driver: 1. UMDF drivers are hosted in a Session 0 based executable on Vista and above – – and – 2. A lot of…


It’s time to party!

Fresh from the oven, Windows Driver Kit (WDK) 7.1.0 is ready for your consumption! You can get it from the Download Center; http://www.microsoft.com/downloads/en/results.aspx?freetext=WDK&displaylang=en&stype=s_basic Or off Microsoft Connect (remember, you have to be signed in to your connect account). https://connect.microsoft.com/site148 Now, go forth and code!


And here you thought I had a cloaking device

Got a good one to share with the group; Q: Can I make a kernel mode driver that opens a handle and talks to a UMDF based driver in another device stack? A: Why yes you can!  Quite simply done provide you follow all the rules. This is a variant of the UMDF initiated cross…