问题
I have developed an application to run on a Samsung Series 7 tablet. This application was developed using WPF, .NET 4.5, and C#.
My problem is that sometimes a button does not receive input the first time it is tapped. For example, Window1 has a OpenWindow2Button on it that opens Window2. Close Window2 and then try to push DoSomethingElseButton. The first time I tap the button, nothing happens. The second time the button works like expected. The same problem also occurs when I tap a DisplayMediaElement that is on Window1.
An interesting fact is that if I use a stylus or mouse, the problem is non-existent.
My guess is that the Window or DisplayMediaElement does not have focus to receive a tap input. (But then why does it have focus to receive a stylus or mouse input?) Is this a feature or a bug? Is it possible to receive touch input the first time a button is tapped?
回答1:
Maybe sometimes it does not recognize gesture as 'tap' but as 'drag' (or any other gesture type)? I think i had a problem with it some time ago.
来源：https://stackoverflow.com/questions/16413882/windows-7-tablet-button-double-tap