I need to know the position of my pointer in my Windows 8.1 APP. The problem is, with a Touch on the screen, the Window.Current.CoreWindow.PointerPosition doesn't change.
So I'm searching a way to find the position of my "finger" on the screen.
I found this : http://msdn.microsoft.com/fr-fr/library/system.windows.input.touch(v=vs.110).aspx
The Touch, TouchDevice, TouchPosition class, of the namespace System.Windows.Input, could help me.
But (I don't understand at all) the PresentationCore.dll isn't available for me : in System.Windows.Input I have only ICommand.
I try to manually add PresentationCore.dll from my local library, but it always ask me to add some other library and does'nt work at the final point.
Also, I tried to install again .NET 4.5.1, but the installation program says me it is already install.
I think I don't understand something obvious, cause I though class like Touch would be natively able in a Windows 8.1 project...