In this blog post I will show you how to create a 2D #XAML app which will be able to display a 3D view (holograms) and then how to go back to the 2D view from the 3D view.
We wil do this using DirectX and Unity.
As you can see in this video, the “context” of the leaved Windows is kept : the scroll position does not change.
Some days ago when uploading my Windows app to the Store, I’ve got a strange error message : “A previous submission for this app was released with a Windows Phone 8.1 appxbundle. Subsequent submissions must continue to contain a Windows Phone 8.1 appxbundle.”. Here’s how I fixed it !
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When working with the WinRT SDK you somethimes get exceptions from it with only an hexadecimal code to help you understand what the error is. Often, when you look for it on Google/Bing, you end with no help and no way to fix the error. There is a way to know the associated error message !
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When you build a Windows Phone App, you for sure take some time to translate it in several language. By default there is no easy way to translate the app name but you can do it. Here is a quick “how-to” !
Let me introduce you a new feature of Internet Explorer 11 which is available in your Windows 8.1 apps too : the MutationObserver. This object lets you observe the changes on any HTML element of your DOM.
“Content before Chrome” is the Leitmotif of Windows Store Apps. You’ll usually end up using a lot of images in your app and getting the dominant color of a picture may actually be useful. My first attempt to achieve this was to get the bytes of the picture and calculate the average value. There is actually an easier and faster solution using the Windows Rutime API.
Windows 8.1 comes with a new feature in the WinJS SDK : a scheduler. Let’s see what it is and how to use it!
In Windows 8, every job is nearly done as soon as you execute it. You could play with the msSetImmediate function but it was still a little mode “hack” than “code”.
With Windows 8.1, the SDK introduce a scheduler used by the whole WinJS framework. This scheduler helps you to define what is important (animations, visual feedback, manage user input) from what can be delayed (background work, data processing not used immediatly).
The goal is to let you build application which reacts immedialty to the user will.
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Did you remember Windows 8 ? The theme of your app was set once at the launch and you could’nt change it dyamically or set once by control. This was really annoying in some case like Settings Flyout where you often wanted to set the opposite one of your app.
This was good old times and these issues are gone in Windows 8.1 : youpi !
Let’s digg a little more 
I am working on an app with a lot of different languages. This is really great because there is a lot more chances that the user get the app in its spoken tongue. You can read more on this topic on MSDN.
Then I wanted to get a basic information : the language used by the app. Let’s say that the user is spanish and that I didn’t translate my app for this tongue then the app could be in english because it’s the one tongue matching the best its preference. The “english” won’t necessary be the first language declared in my manifest but the best one for the user.
By using a ResourceLoader object, you can get any string in the right language but I didn’t find an easy way to get the actually used language.
By digging into the WinRT APIs, I found a way to get this information and it could help you.
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Xaml is really powerful and you can build nearly any user interface you want with it.
However it can be hard sometimes and in this post I will describe how you can create something I first thought it will be easy : a wrapping text with hyperlinks in it.
Something like this :
As you will read, this is not as straightforward as I thought.
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