mousewheel

问题 im trying to find out in PyQT how can i set the Mousewheel event? i need it so i can attach it to the Qscroll area the code im using is working fine. but the size is hardcoded. i need it to somehow dynamically adjust depending on how the wheel(on the mouse) is used.. like when i slide the mouse wheel up. the height of my frame extends(like 50pixels per tick) and vise versa. self.scrollArea = QtGui.QScrollArea() #set the parent of scrollArea on the frame object of the computers self.scrollArea

问题 I'm creating an UserControl that should react if the mouse is over the control and MouseWheel gets rotated. Currently i'm doing this as shown here: public MyUserControl() { this.MouseWheel += new MouseEventHandler(MouseWheelHandler); } private void MouseWheelHandler(object sender, System.Windows.Forms.MouseEventArgs e) { if (e.Delta > 0) incIndex(); if (e.Delta < 0) decIndex(); } protected override void OnMouseEnter(EventArgs e) { this.Focus(); base.OnMouseEnter(e); } In fact this works fine,

问题 I have a flash element on my page that you interact with by using the middle mouse scroll wheel. The page is long. So when scrolling with the mouse wheel it interacts with the Flash element AND scrolls the browser window. Is there a way to disable browser scrolling while the Flash element is active? 回答1: You can use: document.body.style.overflow=allowScroll?"":"hidden"; Where allowScroll is a boolean. 回答2: <!-- disables browser mouse scrolling --> <script type="text/javascript"> if(window

问题 I have a flash element on my page that you interact with by using the middle mouse scroll wheel. The page is long. So when scrolling with the mouse wheel it interacts with the Flash element AND scrolls the browser window. Is there a way to disable browser scrolling while the Flash element is active? 回答1: You can use: document.body.style.overflow=allowScroll?"":"hidden"; Where allowScroll is a boolean. 回答2: <!-- disables browser mouse scrolling --> <script type="text/javascript"> if(window

问题 I have a flash element on my page that you interact with by using the middle mouse scroll wheel. The page is long. So when scrolling with the mouse wheel it interacts with the Flash element AND scrolls the browser window. Is there a way to disable browser scrolling while the Flash element is active? 回答1: You can use: document.body.style.overflow=allowScroll?"":"hidden"; Where allowScroll is a boolean. 回答2: <!-- disables browser mouse scrolling --> <script type="text/javascript"> if(window

问题 MouseWheel event doesn't fire when I' am using any control (ListBox, Panel, TextBox) with scrollbars. To reproduce problem: public class Form1 : Form { private readonly Button button1; private readonly TextBox textBox1; private void button1_MouseWheel(object sender, MouseEventArgs e) { ToString(); // doesn't fire when uncomment lines below } public Form1() { button1 = new Button(); textBox1 = new TextBox(); SuspendLayout(); button1.Location = new System.Drawing.Point(80, 105); button1.Size =

问题 Here is a working example of horizontal scroll with mousewheel, but it does not scroll smoothly. By smoothly I mean like ordinary vertical scroll in Firefox or Opera. $(function() { $("html, body").mousewheel(function(event, delta) { this.scrollLeft -= (delta * 30); event.preventDefault(); }); }); (http://brandonaaron.net/code/mousewheel/docs) I've made a live demo to demonstrate this. http://jsfiddle.net/Dw4Aj/ I want this scroll to work like the vertical one, both with mousewheel and

问题 I have a custom class that extends List which I am using as a container. However, the scroll speed is too fast on the mouse wheel, as in it scrolls loads even if you only move the wheel a tiny bit. I tried adding an event listener to my list for MouseEvent.MOUSE_WHEEL and setting the value of event.delta but this has had no effect. Does anyone know how I can make it slower? My custom class is nothing special, I just created it so I could have a different itemRenders for different item types.

问题 So, I've got some data tossed in a div. It's split up into chunks by date. It scrolls horizontally with the use of jQuery and the mousewheel plugin. I need to fire an event when the div has reached it's terminal point (farthest left, farthest right). I think that it is possible with the way it is currently implemented to calculate when you cannot scroll any further by detecting the data fetched in the mousewheel plugin. I just need a nudge in the right direction. Here's the code that does the

问题 So, I've got some data tossed in a div. It's split up into chunks by date. It scrolls horizontally with the use of jQuery and the mousewheel plugin. I need to fire an event when the div has reached it's terminal point (farthest left, farthest right). I think that it is possible with the way it is currently implemented to calculate when you cannot scroll any further by detecting the data fetched in the mousewheel plugin. I just need a nudge in the right direction. Here's the code that does the