multi-touch

I want this to be good question, so I'll write in details what I would like to achieve, what I've found on the internet and I show what I've done so far and what I've tried. I need to add drag and drop functionality to my application. I have Images (basically controls) that I want to drag to items of listbox. Here is sample UI: And here is usage I have now: As You can see I'm able to drag one of four images and drop it over listbox item. If I move image over correct target (listbox image) image near cursor disappears and everything works fine, but when I don't drop image on list item (I

In my WP 7.1 app I have a page with multiple buttons. I noticed that while any one button is being pressed, no other button can be pressed. How can I overcome this? I need to be able to allow users to press multiple buttons at the same time. You can't handle multiple button clicks at once unfortunately. There is a way around it though. You can use the Touch.FrameReported event to get the position of all the points a user is touching on the screen (I read somewhere before that on WP7 it's limited to two but I can't verify that). You can also check if the action the user is taking (e.g. Down,

Using touchesBeganWithEvent, touchesEndedWithEvent, etc you can get the touch data from the multitouch trackpad, but is there a way to block that touch data from moving the mouse/activating the system-wide gestures (similar to what is done in the chinese text input)? As noted by valexa, using NSEventMask for CGEventTap is a hack. Tarmes also notes that Rob Keniger's answer no longer works (OS X >= 10.8). Luckily, Apple has provided a way to do this quite easily by using kCGEventMaskForAllEvents and converting the CGEventRef to an NSEvent within the callback: NSEventMask eventMask =

I currently have an imageview element that upon being touched, that tests if the action is an actiondown event, and if it is, it gets the coordinates of the touch with getraw(x or y) and then carries out an action based on those coordinates. How would I implement this to get two sets of coordinates from a two finger multitouch event? Take a look at the ACTION_POINTER_DOWN action define in MotionEvent . This is the event that will get called when additional fingers come down after the first ACTION_DOWN triggers. You can use methods like getActionMasked() to assist you in determining which

A friend and I were discussing Mozilla's latest touch support and got on the question of what Safari provides for this. Searches seem to turn up nothing. Do you know of anything that provides touch events to Safari on desktop, either via multitouch trackpad or direct screen interaction (I guess a Windows multitouch environment would be the only relevant case here.)? No, there is currently no support for touch events in the desktop version of Safari. According to this documentation it is only supported on iOS 2.0 or later. 来源： https://stackoverflow.com/questions/3472889/touch-events-available

I know that the number of touch points supported is different from device to device, but is there a way through the API or through code to get that number for the device? You can distinguish between various broad classes of multitouch (none, pinch gestures only, true 2-point multitouch, true 5-point multitouch) by searching the result of PackageManager#getSystemAvailableFeatures() for the various "android.hardware.touchscreen.*" features listed here . If you want to know exactly how many touches may be present, you'll just have to watch MotionEvents as they come in. 来源： https://stackoverflow