tech page 43 - Dave's Blog

Search
My timeline on Mastodon

HIMAGELIST Stream Size

2008 Jan 12, 2:26If you're like me you need to serialize an object that contains an HIMAGELIST via IMarshal for COM's marshalling. I could use ImageList_Write to actually write the HIMAGELIST to a stream for IMarshal::MarshalInterface, but I needed to know the size of the data that I was going to write for IMarshal::GetMarshalSizeMax. I thought I'd use HIMAGELIST_QueryInterface to get an IPersistStream pointer which works, but alas its implementation of IPersistStream::GetMaxSize just returns E_NOTIMPL. Ultimately I called ImageList_Write on a special stream that ignores the data passed to it and just records how much data is written to it. In this fashion I could get the size the HIMAGELIST would require when written to a stream.PermalinkCommentstechnical himagelist boring serialize imarshal com

IPv6 Roundup: Address Syntax on Windows

2008 Jan 9, 11:34

IPv6 address syntax consists of 8 groupings of colon delimited 16-bit hex values making up the 128-bit address. An optional double colon can replace any consecutive sequence of 0 valued hex values. For example the following is a valid IPv6 address: fe80::2c02:db79

Some IPv6 addresses aren't global and in those cases need a scope ID to describe their context. These get a '%' followed by the scope ID. For example the previous example with a scope ID of '8' would be: fe80::2c02:db79%8

IPv6 addresses in URIs may appear in the host section of a URI as long as they're enclosed by square brackets. For example: http://[fe80::2c02:db79]/. The RFC explicitly notes that there isn't a way to add a scope ID to the IPv6 address in a URI. However a draft document describes adding scope IDs to IPv6 addresses in URIs. The draft document uses the IPvFuture production from the URI RFC with a 'v1' to add a new hostname syntax and a '+' instead of a '%' for delimiting the scope id. For example: http://[v1.fe80::2c02:db79+8]/. However, this is still a draft document, not a final standard, and I don't know of any system that works this way.

In Windows XPSP2 the IPv6 stack is available but disabled by default. To enable the IPv6 stack, at a command prompt run 'netsh interface ipv6 install'. In Vista IPv6 is the on by default and cannot be turned off, while the IPv4 stack is optional and may be turned off by a command similar to the previous.

Once you have IPv6 on in your OS you can turn on IPv6 for IIS6 or just use IIS7. The address ::1 refers to the local machine.

In some places in Windows like UNC paths, IPv6 addresses aren't allowed. In those cases you can use a Vista DNS IPv6 hack that lives in the OS name resolution stack that transforms particularly crafted names into IPv6 addresses. Take your IPv6 address, replace the ':'s with '-'s and the '%' with an 's' and then append '.ipv6-literal.net' to the end. For example: fe80--2c02-db79s8.ipv6-literal.net. That name will resolve to the same example I've been using in Vista. This transformation occurs inside the system's local name resolution stack so no DNS servers are involved, although Microsoft does own the ipv6-literal.net domain name.

MSDN describes IPv6 addresses in URIs in Windows and I've described IPv6 addresses in URIs in IE7. File URIs in IE7 don't support IPv6 addresses. If you want to put a scope ID in a URI in IE7 you use a '%25' to delimit the scope ID and due to a bug you must have at least two digits in your scope ID. So, to take the previous example: http://[fe80::2c02:db79%2508]/. Note that its 08 rather than just 8.

PermalinkCommentsroundup ip windows ipv6 technical microsoft boring syntax

Cory Doctorow on LIFT Videos || The presentations of the LIFT conference delivered to your desktop.

2008 Jan 2, 4:41Cory Doctorow the always entertaining and informative speaker talks on new business models, DRM, etc. FTA: "Cory Doctorow is an activist, a writer, a blogger, a public speaker, and a technology person. He speaks about "Digital Rights Management" at LIFT0PermalinkCommentsvideo cory-doctorow drm music piracy

Old Miscellaneous Thoughts

2007 Dec 26, 5:45Miscellaneous thoughts I had that would have been relevant many months ago:
PermalinkCommentspopfly apple personal history-channel indiana-jones pipes mac technical microsoft mashup yahoo nontechnical

Theme Options

2007 Dec 24, 12:41These days it seems like there's a social sharing website for everything representable as bits. Like Scribd for (mostly legal) documents, SciVee for scientific research videos, Wordie for words, and Kuler for color themes. Kuler seems like a ridiculous website (overkill) but I had been meaning to update my homepage's color design and Kuler has an RSS based REST API. The API lets you obtain things like the most recently added color themes or the most popular or all themes containing the color dark red, etc... So of course rather than update my website's design I hooked up my css to the color themes coming out of Kuler. Select my main page's color theme from a list of random Kuler themes. As I'm sure the regular readers can guess I use an xslt and blah blah blah... It looks OK with Silver Surfer and Happy Hipo but in general changing the colors this way doesn't produce something pretty.

When reading about Kuler I found that they may have stolen the whole idea wholeslae from ColourLovers. They discuss the thievery in an article on their blog. I would have switched over to ColourLovers out of principle but they don't have an easily accessible API.PermalinkCommentscolourlovers color xslt theme homepage technical kuler design

BBC Internet Blog - Brandon's History Of Online BBC

2007 Dec 19, 2:57History of BBC on the Web.PermalinkCommentsvia:sambrook history internet technology bbc web article

Despair, Inc.

2007 Dec 19, 2:49Despair, Inc. makes humorous shirts and posters that parody the office standard inspirational posters. I haven't been in a while and it looks like they have new stuff with more variety.PermalinkCommentsparody geek wallpaper shopping technology poster office humor

Mashups by Lenlow

2007 Dec 13, 2:05DJ mixes various well known songs together. Lots of good stuff in here.PermalinkCommentsvia:swannman music mp3 audio techno remix free download mashup

Amateur Time Hackers Play With Atomic Clocks at Home

2007 Dec 12, 9:21Article on amateur atomic clock enthusiastsPermalinkCommentsclock time wired geek technology science atomic-clock article via:boingboing

Weekend Activities

2007 Dec 11, 12:31I wanted to give a brief update on what's been going on for me this weekend and the previous two.

Two weekends ago Sarah and I went down to Santa Cruz for a long weekend and a belated Thanksgiving. I have yet to sort through the photos but Sarah has already put up the photos from our California trip. There's some nice shots from the Monterey Bay Aquarium in there and the place where we stayed. It was a good trip and I'll write more about it at some point in the future.

This past weekend Sarah and I went bowling with Eric and Jane and other friends. And no bowling experience is complete without a DJ and black lights. Surprisingly my work shirt looked great in the blacklight.

This coming weekend Sarah and I will stay at the MGM in Las Vegas where I'll meet up with college friends I haven't seen in a while. Previously the only non-gambling thing I did in Vegas was buffets and the Star Trek Experience (I'm cool) but this time we'll see some more shows which should be fun.PermalinkCommentslasvegas personal bowling california weekend nontechnical

Windows Media Center and Zune Integration Hack

2007 Nov 28, 1:23One of the new Zune features that had me the most excited was the claimed improved Windows Media Center integration which unfortunately turned out to simply mean support for the Win MCE video format (with an exception for HD). I wanted to be able to pick shows recorded by my Win MCE and have the Zune automatically sync up the latest episodes. However, with the improved podcast support in the Zune software one can easily create a ridiculous hack to accomplish this.

The new Zune software has podcast support which does everything I'd want to do with a Win MCE recorded TV series so the goal is to shoehorn a TV series into a Zune podcast. An overview of the steps: Create an XSLT that converts Win MCE data to a podcast, run the XSLT as a scheduled task every few hours per TV series, setup a Web server pointed at the resulting podcasts and the Win MCE Recorded TV directory, and subscribe to the resulting podcasts in the Zune software.
  1. Reading through the Win MCE data stored as an XML file in "C:\ProgramData\Microsoft\eHome\Recording\Recordings.xml" and the spec for podcasts I created an XSLT to convert a series from Win MCE data to a podcast.
  2. I added a new task to the Scheduled Tasks to run my XSLT using my xsltproc.js script. The task runs a handful of commands that look something like the following:

    C:\windows\system32\wscript.exe C:\users\dave\bin\xsltproc.js C:\Users\Dave\Documents\trunk\development\mce-zune\mce-to-podcast.xslt C:\ProgramData\Microsoft\eHome\Recording\Recordings.xml --param title "The Daily Show With Jon Stewart" --param max 4 --param baseURI "http://groucho/" --param thisRelURI "tds.xml" -o "D:\recorded tv\tds.xml"

    For each TV series I run a command like the above and that outputs a podcast for that series into my "D:\Recorded TV\" directory.
  3. Zune only allows http URIs for its podcasts so I installed a web server on my Win MCE server. I'm running Vista Ultimate so it was quick and easy for me to install IIS7 but any Web server will do. Then I pointed it at "D:\Recorded TV\".
  4. Once all the above was done I just subscribed to the resulting podcasts via my Web server and viola! Since I'm forced to use a Web server I can even run the Zune software on a machine other than my Win MCE server. You can see a screen-shot above of my Zune software showing my Colbert Report podcast.
PermalinkCommentstechnical xml mce hack windows media center zune windows xslt podcast

Vishu and Patent Cube

2007 Nov 28, 5:07Vishu, my ex-office-mate, has left Washington and Microsoft for California and Facebook. Vishu and I shared an office for a while and I really enjoyed it. We were able to distract one another from, and help each other with work. We'd often bounce ideas off of one another, work related or otherwise. For one such idea I recently received a Microsoft patent cube, a small marble cube inscribed with my and my invention's name. There are some photos of other people's patent cubes on flickr. Vishu would have received one for this idea too since we developed the idea and wrote the document about it together, but they wait a long time to send you the cube and he was gone a few weeks before they sent it (don't worry, he got the credit and other rewards though).

A week or two after I got my cube Vishu was visiting the Microsoft campus just before moving his family down with him to California. A bunch of us joined him for lunch that day and it sounds like he's enjoying his new job already. Have fun Vishu!PermalinkCommentsmicrosoft facebook vishu cube patent nontechnical

Zune Software Update

2007 Nov 19, 3:47I really appreciate that the first gen Zune's get the new Zune's firmware and software. I like the updated Zune software personally because its faster and simpler, has better podcast support, and the whole social thing has is on their website now. So, I guess I like the software because it has new features that should have been there in the first place.

The social thing is like a Zune social network. It uses your Xbox Live friends to seed your Zune friends list, lets you do the expected social network stuff, lets you preview songs, and unlike first gen Zunes which required face to face time with other Zune owners, allows you to send songs to people. It also lets you display your recently played tracks and your favorite tracks, similar to what Last.FM has, via a Zune Card. I like the Zune Card from a technical perspective because it separates the Zune Card view, written in flash from the User Card data which is in XML. I hope they intend to keep the XML available via this UserCard Service because I think there's potential to easily do cool things.PermalinkCommentsmicrosoft technical music zune social

Angie and Kane Went Away

2007 Nov 19, 12:35Angie and Kane Go Away PartyTwo weekends ago I went down to California for Angie and Kane's going away party. It was fun despite going to a country western club. It was a very large place with plenty of space for line dancing, a dentist chair turned into a make-margaritas-in-your-mouth chair, and of course a mechanical bull. Surprisingly, I did not fit in.

Jon's Go Away PartyThis past weekend Sarah and I went to the EMP and SciFi Museum. The last time I was there was for the Star Trek convention (I'm cool) and Sarah hadn't been before. We also ate in the attached diner which was acceptable.PermalinkCommentsemp seattle nontechnical

BBC NEWS | Technology | Colossus cracks codes once more

2007 Nov 15, 4:03Colossus set to compete against modern PC in decrypting Nazi messages in promotion of museum.PermalinkCommentsbbc article computer cryptography encryption hardware history turing

Ex College Roommate News

2007 Nov 9, 2:38Jon's leaving for Germany today which of course is sad. On Wednesday, Jon came over and we watched Hackers. There's a few things you probably wouldn't notice without repeated viewings of the film: In similar ex college roommate news, I'm going to California over the weekend for Angie and Kane's goodbye party. They're heading for Australia for like a year or something. Angie's got a blog about her travels but rarely seems to update it. I'll get to see Carissa and Elijah there too, almost completing the ex college roommate experience. To avoid confusion I should mention that unlike everyone else I know, Carissa and Elijah aren't leaving the country.PermalinkCommentspersonal nontechnical

TED | Talks | Stephen Petranek: 10 ways the world could end (video)

2007 Nov 6, 8:06TED talk on ten ways the world could end that no one thinks about.PermalinkCommentsastronomy video ted humor science earth technology stephen-petranek

TED: Ideas worth spreading

2007 Nov 6, 2:46Video of TED lectures. TED is (from Wikipedia) "... an annual conference held in Monterey, California and recently, semi-annually in other cities around the world. TED describes itself as a "group of remarkable people that gather to exchange ideas of incPermalinkCommentsanalysis blog video visualization internet social technology ted business news ideas conference

Guy on highway

2007 Nov 4, 11:20This weekend Sarah and I went to Tariq's house warming party in Issaquah and then to Seattle for Jon's going away party at Pike's Pub. On the drive over, just after getting through traffic on I-5 South, I saw emergency vehicles lights on the North bound side and suddenly found my lane stopped. I found out why when a man ran from the left most lane to my lane the right most, then darted left one lane and back right again. Cars started leaving my lane and I could see the man now lounging on the pavement in front of a jeep. Apparently not hurt, he got up and started walking down the highway. He didn't appear to be in his right mind and after walking by our car Sarah reported it to 911. The rest of the night went on as normal and I had fun with Jon and his friends. It'll be sad to see him go next week.PermalinkCommentsnontechnical

Brief Miscellany

2007 Oct 29, 7:07Two brief updates to previous posts:

  1. I noted that I had a new entry on the IE blog. Some comments on the IE blog have recently been rude in their request for information on future versions of IE. For example see the first two comments responding to my post. Feeling bad about that I looked at my posts entry on delicious and saw the following:

    "This is the first blog from the IE team that I have found rigorous and informative. I skipped to the bottom to find it was written by one of the TA's from my first class at Cal Poly."

    That made me feel a bit better and I was able to catch up with someone from college. Thanks Kris!

  2. I previously had my GPS set with an Australian accent. When it encountered 'WA', as in the abbreviation for Washington in freeway exits, it pronounced it 'Western Australia'. Now I've got it with a British accent and WA is just 'W.A.' but when I tell it to drive to 'MS', the name of my saved location for work, it pronounces it 'Manuscript'.
PermalinkCommentsmicrosoft blog gps personal nontechnical
Older EntriesNewer Entries Creative Commons License Some rights reserved.