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Jaime Rodriguez has published a preview of the deck and source code from his WP7 session at yesterday's Silverlight FireStarter event. We expect him to post part 2 and the video recording soon.

Source: The Blog of Jaime Rodriguez

Yesterday I did a dry-run of my performance talk for today’s Silverlight fire starter.

Conclusion was that the talk is like drinking from a fire-hose. It is tight for 45 minutes, but the content is good and we could not agree on what to cut. It was all too good and useful to cut stuff.

Jaime Rodriguez talks about some image tools/libraries that allow you to use GIF files in your WP7 app.

Source: The Blog of Jaime Rodriguez

As you know, Silverlight does not have native support for decoding gif images. That is downer, but not a showstopper since several 3rd party, opensource libraries for decoding Gifs.

The Twitter for Windows Phone team used the ImageTools project from Codeplex to decode gifs.   It worked well, but when we implemented there were two things that bothered me a little:

1. The decoder was not perfect.  In our experience, it does ~90% of the images we tested  [and that was thousands of images, so representative test]
2. There was one infinite loop that bothered me.  Has to do with nextflag during decoding. The Decoder checks for flags to be != 0, and for some odd reason we have seen gifs with nextFlag = –1; this can send your app into an infinite loop.  

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There were a good number of breaking changes and new features introduced in the “beta” release of the Windows Phone Developer Tools. 

Going forward from beta to RTM; the number of breaking changes will be minimal, so let’s just “buckle up” and migrate our code this once. 

The migration is a lot easier than it sounds. I will first walk through the obvious breaking changes that the compiler will catch, and then share tips and workarounds in some of that ‘missing’ stuff that the compiler will miss.  

A Capability is defined as a resource for which privacy, security, cost or business concerns exist.  Examples of capabilities include GPS, camera, microphone, SMS or sensors.

A theme is a visual definition of the look & feel for common controls in an Operating System.  
Themes are usually end-user selectable, changing the theme at the OS level, impacts the look & feel of running applications that are ‘theme aware’.  As an example, on Windows Vista and Windows 7, a popular/desired theme is the Aero theme. 

Jaime Rodriguez has posted about two very promising WPF application frameworks on CodePlex - Onyx and Caliburn.

Catching up on my blog reading, I see two great development frameworks recently posted in Codeplex. Both aim to build clean, testable, loosely coupled WPF applications with separated concerns.

Jaime Rodriguez has posted some WPF discussions that caught his eye.