mousewheel

问题 What I want is : when mouse points on a div, page's scroll bar doesn't scroll. Is this impossible? When I do this, the page's scroll bar always scrolls. Here is a piece of the javascript code: if(document.addEventListener){ document.addEventListener('DOMMouseScroll',scrollFunc,false); } window.onmousewheel=document.onmousewheel=scrollFunc;//IE/Opera/Chrome/Safari How to do that? 回答1: Here you go: var noscroll = document.getElementById('noscroll'); var locked, lockedX, lockedY; noscroll

问题 Many mice and keyboards have "zoom" buttons on them. These almost always generate Ctrl+Mouse Wheel messages to the applications, so they are easily accounted for by us programmers. But my current Logitech mouse has an additional feature. The zoom wheel indeed sends Ctrl+Mouse Wheel messages when scrolled (or, actually, tilted), but when I depress the zoom wheel, most programs restore the zoom level to the default, i.e. 100 %. What kind of message does the mouse send to the application in this

问题 ...without limiting the scroll inside the iframe or the need to specifically name the scrollable elements. I have a google-map-like widget that can be embedded in 3rd party websites in the form of an iframe embed code. When people use mouse wheel over my widget I want only the content of the widget to scroll and not the parent page. My question is similar to How to prevent page scrolling when scrolling a DIV element? but my problem is that my ifrmae contains multiple elements including media

问题 I've been struggling with this for a little while now.. I am using this code to monitor the mousewheel so it can be used for scrolling with a slider that I have.. however, it has an issue where the actions queue up so if you scroll with the mousewheel fast (like anyone would do normally) they build up and it causes buggy behavior.. I know about handling this sort of issue with animation, but not with a mousewheel monitor.. I want to do something like unbind the mousewheel at the start of the

问题 I'm trying to enable mousewheel scroll for a simple div. It work for FF CHROME SAFARI...but IE 7,8,9 still won't cooperate as usual ;) I am using jQuery mousewheel plugin : (function($) { var types = ['DOMMouseScroll', 'mousewheel']; $.event.special.mousewheel = { setup: function() { if ( this.addEventListener ) { for ( var i=types.length; i; ) { this.addEventListener( types[--i], handler, false ); } } else { this.onmousewheel = handler; } }, teardown: function() { if ( this

问题 How can I detect mouse scroll and movement event on windows from c++ application even when the application itself is inactive (I mean minimized or hidden) I can get keyboard events for (int i = 8; i <= 190; i++) { if (GetAsyncKeyState(i) == -32767){ SaveLogs(i, "log.txt"); wcout << (wchar_t)i; } } ///... int SaveLogs(int key_stroke, char *file){ if ((key_stroke == 1) || (key_stroke == 2)) return 0; FILE *OUTPUT_FILE; OUTPUT_FILE = fopen(file, "a+"); /*cout << key_stroke << endl;*/ if (key

问题 I've pretty much successfully implemented an instance of jQuery's "scrollable" plugin but I'm having a peculiar issue with mouse wheel navigation. If you attempt to mouse wheel when the scrollable pane is in its initial state, nothing happens. But if you navigate with the buttons and then use the mouse wheel it scrolls back to the beginning then stops working. The reason seems to be that it interprets every mouse wheel move as a backwards move. Why is this? And can it be changed? (Everything

问题 Problem: you can scroll upwards even though the first item should be at the very top of the canvas How to reproduce the problem: have at least one item on the canvas and scroll using the mouse ( press space to make an item ) Note: the problem ceases once the items are wider than the canvas itself Sample code import tkinter as tk class App(tk.Tk): def __init__(self): tk.Tk.__init__(self) self.bind("<MouseWheel>", self.scroll) self.bind("<KeyPress>", self.keypressed) self.TargetCanvas = None

问题 I start with a image in a DIV, i want to zoom in the image with my mousewheel. All is ok but the zoom in start at the xy0 of the image and it is not what i want.. I want to Zoom from my cursor position. There is a way to do that simply under my code ? Here is the DEMO : This is my javascript Code look at the //ZOOMABLE part: /* * ZOOM */ (function (window) { image(window.document.querySelector('#dropZone'), function (files) { //Mouse position function mousePosition(e) { var result_x =

问题 I have a problem on calling my private method on MouseWheel event. In fact my mouse wheel event gets fired properly when i only increment a variable or display something in Title bar etc. But when i want to call a private method, that method gets called only one time which is not the requirement i want to call that method depending on the speed of scroll i.e. when scroll is done one time slowly call the private method one time but when the scroll is done in high speed call the private method