touch

问题 Is there any way to capture touch input on the screen (outside application frame) in windows device? I'm working on a WPF application and can retrieve the touch input if it only occurs within the application frame. Also, is there a way to register the touch input even when the application is minimized? 回答1: There's no built-in method of the WPF framework that lets you listen for input outside of the application. If you want to do that, you'll have to get into p/invoke territory. Specifically

问题 Is there any way to capture touch input on the screen (outside application frame) in windows device? I'm working on a WPF application and can retrieve the touch input if it only occurs within the application frame. Also, is there a way to register the touch input even when the application is minimized? 回答1: There's no built-in method of the WPF framework that lets you listen for input outside of the application. If you want to do that, you'll have to get into p/invoke territory. Specifically

问题 I developed an App to collect the touch events under the foreground service class. The app has main activity to input user's information (e.g., name and age). Then when "RUN" button on the menu items is selected by the user, a foreground service starts to collect touch events, and a notification is launched to inform the user that the service is running. This is the main activity code public class MainActivity extends AppCompatActivity implements View.OnClickListener { @Override public

问题 In the process of experimenting with scaling/panning an inline SVG image by applying a matrix transform I have discovered a rather peculiar thing. After loading the image I am attaching a touchstart event listener to some of the elements in the SVG image and the event fires right away when the object is touched. However, after applying a transform document.getElementById('mysvg').setAttribute('transform''matrix(a b c d e)') which has the effect of scaling and/or translating the entire SVG

问题 I have a small problem: I would like using Raspberry PI 7 inch LCD on portrait (standing) mode. (Kivy application) I added on /boot/config.txt: lcd_rotate=2 and display_rotate=1 The display is OK, but touch screen not good! The touch not rotating 90 degrees. How I rotate touch screen 90 degrees? 回答1: Rotate official 7" Raspberry Touchscreen 1. install xinput : sudo apt-get install xinput 2. to rotate the screen, edit this file: sudo nano /boot/config.txt and add this line at the end: display

问题 I have a small problem: I would like using Raspberry PI 7 inch LCD on portrait (standing) mode. (Kivy application) I added on /boot/config.txt: lcd_rotate=2 and display_rotate=1 The display is OK, but touch screen not good! The touch not rotating 90 degrees. How I rotate touch screen 90 degrees? 回答1: Rotate official 7" Raspberry Touchscreen 1. install xinput : sudo apt-get install xinput 2. to rotate the screen, edit this file: sudo nano /boot/config.txt and add this line at the end: display

问题 I have a small problem: I would like using Raspberry PI 7 inch LCD on portrait (standing) mode. (Kivy application) I added on /boot/config.txt: lcd_rotate=2 and display_rotate=1 The display is OK, but touch screen not good! The touch not rotating 90 degrees. How I rotate touch screen 90 degrees? 回答1: Rotate official 7" Raspberry Touchscreen 1. install xinput : sudo apt-get install xinput 2. to rotate the screen, edit this file: sudo nano /boot/config.txt and add this line at the end: display

问题 I am currently working on a health-based project focusing on a person smartphone usage. And for that i want to monitor his touch-screen usage pattern i.e how long he has been pressing his hands on the screen. When this limit crosses a thresh-hold value will be generated warning to him. I need to know will i be able to track down a person screen-usage in background (i.e. while he uses all other apps in his phone) If so which functions would help me ?? 回答1: Android does not support this, for

问题 I am trying to make the below JSFiddle work for tablet/mobile devices (e.g. 'on touch' as well as 'click'). https://jsfiddle.net/lkw274/7zt1zL0g/87/ <div class="user-navigation"> <a class="mobile-menu-new" href=""><span></span>Menu</a> </div> $(document).ready(function() { $(".user-navigation a.mobile-menu-new").click(function (e) { e.preventDefault(); $(".user-navigation a.mobile-menu-new").toggleClass("current"); }); }); .current { background: #F00;} Expected behaviour: On clicking 'Menu',

问题 I have already seen fingurePaint.java from API demos. I want to implement touch smooth eraser to erase parts of the image by touch move in android. fingurePaint told me to implement this mPaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.CLEAR)); But this is not working to erase the image. It is working to erase something which is drawn by touch. public class SandboxView extends View implements OnTouchListener { public final Bitmap bitmap; private final int width; private final int