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How many fingers point can be tracked by Windows 8

Windows 8 brought to us a native support for touch screens. This is a great feature that opens the tablets world for us. For touch support, we have a lot of gestures that are built in. We need only to subscribe to the event that we want to listen. This can be very useful, because we don’t need any more to implement our custom gestures. Tap - one finger touches the screen and lifts up. Press and hold - one finger touches the screen and stays in place. Slide - one or more fingers touch the screen and move in the same direction. Swipe - one or more fingers touch the screen and move a short distance in the same direction. Turn - two or more fingers touch the screen and move in a clockwise or counter-clockwise arc. Pinch - two or more fingers touch the screen and move closer together. Stretch - two or more fingers touch the screen and move farther apart. If we need a custom gesture we can implement it without any kind of problem. This is not recommended because the user will need...

What should I do when I receive "4.1 Your app must comply with the following privacy-related requirements"

The most of us are developer; we are technical persons, which do their stuff better than anyone. But besides this, when we are developing a Windows Client application for Windows 8 (Metro App) we don’t need to forget about the legal stuff and similar things. We don’t like them, but we need to resolve them also. If you have an application that use internet connection, access a backend server, share data with another 3th party like Facebook, Twitter or another system than we should have a simple privacy policy in our application. From now one this is a MUST, even if in the past was optional. If you try to submit your application without privacy policy that you will receive a big reject with the following message: "Your app doesn't meet requirement 4.1" (Privacy) What I recommend, is to add a privacy policy even if you don’t thing that you store, share the user data. Why? Is safest for you and you don’t need to submit the application again if you will have this problem. ...

Mixing UI controllers in a Windows Store App (Metro App) for Windows 8

More and more people (especially developer) are very excited about Windows 8 and the new features that come with him. As you already know we have free native languages that can be used to write Windows Store Applications (Metro Apps): C++ using DirectX or XAML C# using XAML JavaScript using HTML5 Also we can use Visual Basic and XAML. One interesting feature is the mixing components support. We can use components written in C# or C++ and use them in project written in JavaScript, C++ or C#. This is what WinMD and WinRT offer to us. Because of this we can imagine a lot of scenarios developing a part of the application in C# and the UI part in JavaScript for example. Sounds great and this is possible and also recommended. We can develop great application in this way. Also, WinRT API is not 100% available in any language. Even if JavaScript, C# and C++ are native languages and WinRT is native for all of them, there are things that can be done only from a specific language. For examp...