mousewheel

问题 I have multiple Tkinter listboxes that I have scrolling together using a single scrollbar, but I'd ALSO like them to scroll together for mousewheel activity over any of the listboxes. How to do this? My current code is based on the last pattern discussed here: http://effbot.org/tkinterbook/listbox.htm It works fine when using only the scrollbar, but the listboxes scroll independently when the mousewheel is used. 回答1: Solve the problem pretty much the same way as you did to connect the two

问题 I am currently working on my first WPF project and trying to make a listview scrollable. At first I thought this could be easily done by simply limiting the listview's width and height and thus forcing a scrollbar to appear automatically whenever the content exceeds its space. This seemed fine at first but due to the handled PreviewMouseDown-Event (which enables dragging the list's items) it doesn't work after selecting an item. Second attempt (using ScrollViewer) <ScrollViewer> <ListView

问题 This question already has answers here : Closed 7 years ago . Possible Duplicate: How to disable browser or element scrollbar, but allow scrolling with wheel or arrow keys? I was able to disable vertical scrollbars in a grid by setting the CSS property overflow-y: hidden . However, this removed the ability to scroll the contents with the mouse wheel as well. Is there a way to not show the scrollbars but still allow the contents to be scrolled through mouse wheel or arrow keys? 回答1: There are

问题 I'm trying to prevent a mousewheel event captured by an element of the page to cause scrolling. I expected false as last parameter to have the expected result, but using the mouse wheel over this "canvas" element still causes scrolling: this.canvas.addEventListener('mousewheel', function(event) { mouseController.wheel(event); }, false); Outside of this "canvas" element, the scroll needs to happen. Inside, it must only trigger the .wheel() method. What am I doing wrong? 回答1: You can do so by

问题 For a different question I composed this answer, including this sample code. In that code I use the mouse wheel to zoom in/out of an HTML5 Canvas. I found some code that normalizes speed differences between Chrome and Firefox. However, the zoom handling in Safari is much, much faster than in either of those. Here's the code I currently have: var handleScroll = function(e){ var delta = e.wheelDelta ? e.wheelDelta/40 : e.detail ? -e.detail/3 : 0; if (delta) ... return e.preventDefault() &&

问题 I want to specify amount to scroll with VScrollBar. So in Flex 3 we have "lineScrollSize" but how this property called in Flex 4? I thought it VScrolBar.stepSize — but it dose not do anything. Somebody please help me. I just whant my content to scroll faster on mouse wheel. 回答1: Have a look into LayoutBase.getVerticalScrollPositionDelta. You might want to subclass and override it! Here's what I did in my own layout class: override public function getVerticalScrollPositionDelta(navigationUnit

问题 I'm using the popular mousewheel plugin to to emulate the fullpage scroll like this website. jQuery(function() { var top = 0, viewport = jQuery(window).height(), step = jQuery(".home .l-section:first").outerHeight(), body = jQuery.browser.webkit ? jQuery('body') : jQuery('html'), wheel = false; jQuery('body').mousewheel(function(event, delta) { wheel = true; if (delta < 0) { top = (top + viewport) >= jQuery(document).height() ? top : top += step; body.stop().animate({ scrollTop: top }, 400,

问题 I find it is scrolling too much at a time when the mouse scroll wheel is used. I have a very short ScrollViewer (one line tall) that contains a few lines of items in a WrapPanel , and it is scrolling right to the bottom in one "tick" so that the middle line is never visible. 回答1: Not nice solution but you could add a few panes with text - one panel each line ScrollViewer class uses IScrollInfo interface and there are 2 methods. ((IScrollInfo)myPanel).LineUp();// and LineDown() Add a method to

问题 Ok, so I've managed to get horizontal scroll via mousewheel working for my my Wordpress site using the Expositio theme (http://wpshower.com/themes/expositio/) This uses Brandon Aaron's Jquery-Mousewheel which can be found here : https://github.com/brandonaaron/jquery-mousewheel/zipball/master/ (for those of you who had difficulty finding a working link like I did!) After this code in my Header.php : <?php wp_enqueue_script( 'jquery' ); if ( is_singular() && get_option( 'thread_comments' ) )

问题 Going by this threat, I was able to set my app up so that it navigates when one scrolls. I have just one issue, information for which have not been able to find anywhere! How do I set the "sensitivity" of the scroll event? My issue is that often even with the slightest scroll , it navigates multiple routes rather than just giving me the next one. As you can see in the GIFF attached, this is with very light movement of my trackpad and it goes too fast from About to Tour to Gallery to all other