event-handling

问题 I have a listener applied to my field: nameTextField.addEventHandler(KeyEvent.KEY_TYPED, fieldChangeListener(50)); Event handler: private EventHandler<KeyEvent> fieldChangeListener(final Integer max_Lengh) { return new EventHandler<KeyEvent>() { @Override public void handle(KeyEvent event) { TextField field = (TextField) event.getSource(); String text = field.getText(); // I need here something like: if(KeyEvent.VK_ENTER){ // do special part for ENTER KEY } } } } Problem is KeyEvent event is

问题 I'm trying to detect if the scroll event is up or down but I can't find the solution. import React, { useState, useEffect } from "react"; import { Link } from "react-router-dom"; const Navbar = ({ className }) => { const [y, setY] = useState(0); const handleNavigation = (e) => { const window = e.currentTarget; if (y > window.scrollY) { console.log("scrolling up"); } else if (y < window.scrollY) { console.log("scrolling down"); } setY(window.scrollY); }; useEffect(() => { setY(window.scrollY);

问题 I just fund myself implementing a timer-based version of "handle a list of events as a bunch" in order to safe resources - again - and I'm wondering whether there is a nice common pythonic approach. You probably know this: you're handling recurring events like mouse movements, file system changes etc. and you have to do some calculation as a reaction to those events but it would be great if you could use a little break in the stream of events to handle them in a bunch. Maybe because older

问题 In my sheet in column B I have names of components In column A I would like to have checkboxes which are dynamically added, as the list of names in column B will increase over time I need to be able to do the following: - handle the events (onclick) as ticking/unticking the checkboxes hides/unhides rows in another sheet - return the status of each checkbox as I cycle through the checkboxes in another module (onclick from a commandbox) and depending on the status an action follows or not -

问题 In my sheet in column B I have names of components In column A I would like to have checkboxes which are dynamically added, as the list of names in column B will increase over time I need to be able to do the following: - handle the events (onclick) as ticking/unticking the checkboxes hides/unhides rows in another sheet - return the status of each checkbox as I cycle through the checkboxes in another module (onclick from a commandbox) and depending on the status an action follows or not -

问题 I have a component that emits an showSelection event on click but also retains the click event handler given to it by its parent. <template> <section class="base-input peudo-select"> <input v-bind="$attrs" type="text" readonly v-on="listeners" @dblclick.prevent.stop /> </section> </template> <script> export default { ... computed:{ listeners(){ return { ...this.$listeners, input: event => this.$emit('input', event.target.value), click: [ this.$listeners.click, // Always put the parent given

问题 I am trying to create a log of when a specific range (G2:G103) within a specific worksheet (named "FORMULAS") has any changes made to it. This is a workbook that is viewed by many people multiple times a day, and it would be helpful for me to have record of when changes were made to the range in question that I can keep track of behind the scenes. I would like the log of changes to be contained within another worksheet (named "ActivityLog") starting in column E with the username and now

问题 To overcome a bug in 10.3.3 (see QC report https://quality.embarcadero.com/browse/RSP-29565) relating to TFDTable detailed elsewhere (Delphi TFDTable open fails when indexname is set), I want to be able to define a class with a method in a common unit that can be assigned (programmatically) as a BeforeOpen event in the relevant DFM for TFDTable components defined on a Form or DataModule. I realize that this question has been asked before (e.g. How to make a separate unit for event methods,

问题 I am having trouble tracking the value of the "option" tag in the "select" tag. I currently have a drop down menu for Google Translator Widget where user can click on it and select the language. When you click on the "Select Language" drop down, you will be able to see German as the option. See the attached screenshots. I have created a Macro call "JS - Google Translate - Select Option" in the Google Tag Manager. Here is the code for "JS - Google Translate - Select Option": function() { var

问题 I'm working on a program which generates and plays MIDI Events. I've implemented the ControllerEventListener Interface for I want to print messages every time one of the 15 notes is played. The problem is, that I can't change the instrument the notes are played by anymore (by that I've to say that my computer don't uses the default Piano, but a drum or something similar if I add the ControllerEvent to the track) I already looked up the involved methods in the Java API specifications, but I