multi-touch

touchesEnded not being called??? or randomly being called

If I lift my finger up off the first touch, then it will recognize the next touch just fine. It's only when I hold my first touch down continuously and then try and touch a different area with a different finger at the same time. It will then incorrectly register that second touch as being from the first touch again. Update It has som...

How to ask UIImageView if MultipleTouchEnabled is "YES"

I have created a few UIImageViews programmatically, but I have a feeling that even though I setMultipleTouchEnabled to YES during the setup, it is not getting set properly and it's leading to multi-touch issues. My question is, within touchesBegan how do I go about asking the UIImageView that was touched if it has MultipleTouchEnabled o...

Silverlight 4: Any touch library that supports gestures & touch events?

Silverlight provides only Touch.FrameReported event and doesnt provide any events for the UIElements like it does for mouse events(ex: MouseDown, MouseUp). Is there any touch library available for the silverlight which provides these touch events and supports gestures. Google did not help me much or may be my search terms are not correc...

WPF Manipulation and Touch events not firing, but mouse events do?

I have a Samsung LD220Z multi touch monitor, and when I'm experimenting with some WPF and touch features the touch events arent firing. The mouse down event seems to be firing however. Does this mean that I have to take into account that not all touch screen behave the same, and how do I get the touch inputs on my screen? I've tried the...

small sprite touch

There are some games which have some small pictures as sprites and can move by touch.If the sprite is a larger picture,the touch is quite normal.And we can use the function CGRectContainsPoint check for the sprite.But when the sprite is quite small,this function looks not good.Is there other method can sovle the problem? ...

Change color of the iPhone screen

Hi, I need to change the color of the iPhone screen when i touch on it. The only thing i need to do is to change the color of the area where i am touching. if i am placing a star on the screen as touch then only that area color will be changed. Any idea about this? Thanks in advance, SMAK ...

Open Source multi-touch API's?

I'm looking for a good open source multi-touch API to use in a project we might get. So far I've found PyMT, but haven't really seen any comments on the maturity of that product, so any input in that regard would be much appreciated. I'd also like some other suggestions on API's that might be of interest, since googling have only given ...

iPad Gesture Recognizer - Delayed Response

Hi, In my app I have added the new Gesture Recognizers that are available in the 3.2 SDK. Everything appears to be working correctly and the response time on the screen been very fast. But for some reason when I add "requireGestureRecognizerToFail" to some of my gestures, there is a very visible delay when the gesture is triggered. B...

WPF 4 multi-touch drag and drop

I have a WPF 4 application where I have implemented Drag and Drop using the standard DragDrop.DoDragDrop approach, but Im doing it using touch instead of Mouse events. My XAML for my Grid (that Im dragging) is as follows: <Grid x:Name="LayoutRoot" ManipulationStarting="ManipulationStarting" ManipulationDelta="Manipulation...

Multi-touch ScrollViewer eating touch events

WPF 4.0: I have scroll viewer with many Sliders inside of it. I want the scroll viewer to pan with touch, and I want the internal slider to also respond to touch. Unfortunately, the scroll viewer is eating the "TouchMove" events and not passing them down to the slider control. Any idea how to fix this? Here is my XAML: <Window x:...

Webkit iphone/ipad issue with mutl-touch

Hi, In a UIWebView (multi-touch enabled) I got a page with two divs (div1 and div2), each of them having registered for the touchstart and touchend events. Everytime they are receiving touch events, I am dumping the content of: event.touches: contains all current touches event.targetTouches: contains touches relevant to the given tar...

Why touchesMoved method will not be triggered in iphone sometimes?

I have enabled multiply touch. but when i put one finger on the screen at first and put another finger on the screen after that. Then i moved one finger of the two and keep another one not moving, the touchesMoved method will not be trigger sometimes? Is there any one have any idea about that? Thanks for the help ...

Virtual Mouse/TouchPad Using TouchSreen

Is it possible to have a "virtual touchpad" or "virtual trackball" on a touchscreen monitor? I have several monitors and only one of them is touchscreen. I am trying to do away with the mouse and keyboard for an app I am working on and would like to use only the touchscreen. I need something like a virtual touchpad on my touchscreen mo...

Multi-touch detecting & differentiating - Cocos2d for iPhone

I would like to know how to detect and differentiate between touches in a multi-touch view. I have read about a "hash" code, but I don't understand how to use it. I want to know when two of my Sprites are touched at the same time, like as if pressing a chord on two keys of a piano. [EDIT] Here is an example of what I have for my ccTou...

ScaleGestureDetector not detecting gesture end

I have hooked in a ScaleGestureDetector to an OnTouchListener as instructed in Android documentation. For some reason the ScaleGestureDetector does not always detect end of a pinch gesture. This happens mostly when pinching fast from large to small. The effect is that after I have released both fingers the detector does not fire the ge...