mouseevent

问题 I'm trying to create link-like label in scala. But no mouse events works for me. How are they supposed to work? class Hyperlink extends Label{ text = "hyperlink" reactions += { case MouseClicked(_,_,_,_,_) => println("mouse clicked")}} I put this in some panel and click over the label like a pro minesweeper player... and nothing shows up in console. Why? 回答1: You need to listenTo the relevant thing, something like: listenTo(this.mouse.clicks) Edit: since 2.8.0 Mouse is deprecated, use mouse

问题 I have a dialog that pops up as result of an error condition. I want the dialog to remain open for at least 30 seconds, and close 30 seconds after the last user input (mouse or keyboard) is received. I can implement this by checking the value returned by GetLastInputInfo and closing the dialog when this is more than 30 seconds ago, but if the dialog pops up when the user hasn't been at the mouse or keyboard for 30 seconds, the GetLastInputInfo test passes immediately, and the dialog closes

问题 See the code on this site I want to return the relative coordinates of a mouse click/move with respect to the html5 canvas. What does the code below mean? if ( event.layerX || event.layerX == 0) { // Firefox mouseX = event.layerX ; mouseY = event.layerY; } else if (event.offsetX || event.offsetX == 0) { // Opera mouseX = event.offsetX; mouseY = event.offsetY; } layerX works on all browsers except Opera. offsetX works on all browsers except Firefox So what do we mean by, if either event.layerX

问题 I am trying to detect a mouseup outside of a window in Meteor. I tried this, but window doesn't seem to work: Template.layout.events({ 'mouseup window' : function(e) { console.log("mouseup"); } }); How should I bind events to the window in Meteor? 回答1: The code snippet below will bind the event handler when your template is created and unbind when your template is destroyed. Should give you the behavior you're looking for. var layoutMouseUpHandler = function(e) { console.log('window.mouseup')

问题 I have a custom control that updates two NumericUpDowns with the current mouse coordinates by handling the MouseMove event. However I have experienced a strange case where the MouseMove event is fired even when this should not happen (I have turned off my wireless mouse and disabled the trackpad). So, MouseMove happens even if the mouse does not move. I've made a simple check and verified that between these "ghost" MouseMove events the position of the mouse pointer does not change. I

问题 I have a WPF application. There is a canvas. I draw line when user drag the mouse over the canvas (from mouse down to mouse up). I take initial point, when mouse is pressed down and final point, when user does mouse up. Then I calculate the distance and draw the line in simple mouse down, move and up events. After drawing many lines on canvas, I click on any one of the line. I want to select the line and show the user that line is selected (like by changing the color of the line). So user can

问题 I want to to allow user to select a region with mouse, like you can do mostly everywhere.For more clarity just imagine your desktop on Windows, and click the left button and move the mouse with the button holed. The following will happen: you will see how the region that your mouse passed is highlighted with a rectangle. That is exactly what I want to do. p.s. Mathematically I know how to calculate, and also know how to draw the rectangle by being able to track mouse position when it is

问题 This question already has answers here : How do I get the coordinates of a mouse click on a canvas element? (22 answers) Closed 7 months ago . I have an HTML file with a <canvas> element and I am trying to get the mouse coordinates in the click event. I am using this code: secondCanvas.addEventListener('click', function(e) { console.log(e.pageX) }, false); When I click on the top left point I get in console 500~ number, not zero... what do I need to do to get the coordinates of the mouse on

问题 I am trying to write an X11 input driver that can use the touchscreen on my Android phone to move and click the mouse. I've gotten moving the mouse alright, but I'm having trouble getting the clicks recognized correctly by the applications. My current code is up at https://gist.github.com/3981cedec9d5c55af15f . First of all, when I click on a background window, it becomes the primary window, but it does is not moved to the front of the screen. Second of all, if I right click, the entire

问题 I am trying to write an X11 input driver that can use the touchscreen on my Android phone to move and click the mouse. I've gotten moving the mouse alright, but I'm having trouble getting the clicks recognized correctly by the applications. My current code is up at https://gist.github.com/3981cedec9d5c55af15f . First of all, when I click on a background window, it becomes the primary window, but it does is not moved to the front of the screen. Second of all, if I right click, the entire